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ATOME CARBONE [66 records]
Record 1 - internal organization data 2024-06-21
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
- Pollutants
Record 1, Main entry term, English
- polyfluoroalkyl substance
1, record 1, English, polyfluoroalkyl%20substance
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- polyfluoroalkylated substance 2, record 1, English, polyfluoroalkylated%20substance
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Polyfluoroalkyl substances are distinguished from perfluoroalkyl substances by not being fully fluorinated. Instead, they have a non-fluorine atom (typically hydrogen or oxygen) attached to at least one, but not all, carbon atoms, while at least two or more of the remaining carbon atoms in the carbon chain tail are fully fluorinated. 3, record 1, English, - polyfluoroalkyl%20substance
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
- Agents de pollution
Record 1, Main entry term, French
- substance polyfluoroalkylée
1, record 1, French, substance%20polyfluoroalkyl%C3%A9e
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- substance polyfluoroalkylique 2, record 1, French, substance%20polyfluoroalkylique
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le nom «substance polyfluoroalkylée» [...] est donné aux molécules pour lesquelles les atomes d’hydrogène d’au moins un atome de carbone ont été [remplacés] par des atomes de fluor. 1, record 1, French, - substance%20polyfluoroalkyl%C3%A9e
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2023-05-16
Record 2, English
Record 2, Subject field(s)
- Chemistry
Record 2, Main entry term, English
- graphene
1, record 2, English, graphene
correct, standardized
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A single layer of carbon atoms with each atom bound to three neighbours in a honeycomb structure. 1, record 2, English, - graphene
Record number: 2, Textual support number: 1 OBS
It is an important building block of many carbon nano-objects. 1, record 2, English, - graphene
Record number: 2, Textual support number: 2 OBS
graphene: basic term used in the description of carbon nano-objects. 2, record 2, English, - graphene
Record number: 2, Textual support number: 3 OBS
graphene: term and definition standardized by the International Organization for Standardization (ISO). 3, record 2, English, - graphene
Record 2, French
Record 2, Domaine(s)
- Chimie
Record 2, Main entry term, French
- graphène
1, record 2, French, graph%C3%A8ne
correct, masculine noun, standardized
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Monocouche d’atomes de carbone où chaque atome est lié à trois voisins, dans une structure en nid d’abeilles. 1, record 2, French, - graph%C3%A8ne
Record number: 2, Textual support number: 1 OBS
C’est un élément de base important pour beaucoup de nano-objets carbonés. 1, record 2, French, - graph%C3%A8ne
Record number: 2, Textual support number: 2 OBS
graphène : terme de base utilisé pour décrire les nano-objets carbonés. 2, record 2, French, - graph%C3%A8ne
Record number: 2, Textual support number: 3 OBS
graphène : terme et définition normalisés par l’Organisation internationale de normalisation (ISO). 3, record 2, French, - graph%C3%A8ne
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Química
Record 2, Main entry term, Spanish
- grafeno
1, record 2, Spanish, grafeno
correct, masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 CONT
Uno de los modos de obtener grafenos –en forma de “nanocintas”– es la apertura longitudinal controlada de nanotubos [...] Las aplicaciones de este material dependen del desarrollo de tecnologías de fabricación que proporcionen una superficie con propiedades bien definidas y controladas. 1, record 2, Spanish, - grafeno
Record 3 - internal organization data 2017-07-18
Record 3, English
Record 3, Subject field(s)
- Chemistry
Record 3, Main entry term, English
- thiocarbonyl
1, record 3, English, thiocarbonyl
correct, noun
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record 3, French
Record 3, Domaine(s)
- Chimie
Record 3, Main entry term, French
- thiocarbonyle
1, record 3, French, thiocarbonyle
correct, noun, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Groupe fonctionnel comportant un atome de carbone doublement lié à un atome de soufre. 1, record 3, French, - thiocarbonyle
Record number: 3, Textual support number: 1 OBS
thiocarbonyle : terme et définition publiés au Journal officiel de la République française le 1er juillet 2017. 2, record 3, French, - thiocarbonyle
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2017-07-18
Record 4, English
Record 4, Subject field(s)
- Chemical Elements and Compounds
Record 4, Main entry term, English
- carbophile
1, record 4, English, carbophile
correct, adjective
Record 4, Abbreviations, English
Record 4, Synonyms, English
- carbophilic 1, record 4, English, carbophilic
correct
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Éléments et composés chimiques
Record 4, Main entry term, French
- carbophile
1, record 4, French, carbophile
correct, adjective
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Se dit d’un composé présentant une affinité pour un atome de carbone insaturé, en particulier dans un alcyne. 1, record 4, French, - carbophile
Record number: 4, Textual support number: 1 OBS
Certains composés carbophiles de l’or et du cuivre sont utilisés en synthèse organique. 1, record 4, French, - carbophile
Record number: 4, Textual support number: 2 OBS
carbophile : terme et définition publiés au Journal officiel de la République française le 1er juillet 2017. 2, record 4, French, - carbophile
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2016-12-21
Record 5, English
Record 5, Subject field(s)
- Chemical Elements and Compounds
- Climate Change
Record 5, Main entry term, English
- nonmethane hydrocarbon
1, record 5, English, nonmethane%20hydrocarbon
correct
Record 5, Abbreviations, English
- NMHC 2, record 5, English, NMHC
see observation
Record 5, Synonyms, English
- non-methane hydrocarbon 3, record 5, English, non%2Dmethane%20hydrocarbon
correct
- NMHC 2, record 5, English, NMHC
see observation
- NMHC 2, record 5, English, NMHC
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Lower Stratospheric Measurement of Non-methane Hydrocarbons. This study is ... important because non-methane hydrocarbons, if present in the stratosphere, will act as a sink for Cl in the same way that methane acts and thus reduce the ozone depletion attributable to chlorine-containing species. 4, record 5, English, - nonmethane%20hydrocarbon
Record number: 5, Textual support number: 1 OBS
NMHC: This might be an in-house or a non-recognized abbreviation; not to be used alone, to avoid any risk of confusion. 5, record 5, English, - nonmethane%20hydrocarbon
Record number: 5, Textual support number: 2 OBS
non-methane hydrocarbon; NMHC: term and abbreviation extracted from the “Glossaire de l’environnement” and reproduced with permission of the Organisation for Economic Co-operation and Development. 6, record 5, English, - nonmethane%20hydrocarbon
Record 5, French
Record 5, Domaine(s)
- Éléments et composés chimiques
- Changements climatiques
Record 5, Main entry term, French
- hydrocarbure autre que le méthane
1, record 5, French, hydrocarbure%20autre%20que%20le%20m%C3%A9thane
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- hydrocarbure non méthanique 2, record 5, French, hydrocarbure%20non%20m%C3%A9thanique
correct, see observation, masculine noun
- HCNM 3, record 5, French, HCNM
see observation, masculine noun
- HCNM 3, record 5, French, HCNM
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Hydrocarbure ou dérivé d’hydrocarbure composé de plus d’un atome de carbone et d’atomes d’hydrogène, ces derniers pouvant être partiellement ou entièrement remplacés par des halogènes. 4, record 5, French, - hydrocarbure%20autre%20que%20le%20m%C3%A9thane
Record number: 5, Textual support number: 1 OBS
Les HCNM regroupent tous les hydrocarbures halogénés, à l’exception des halométhanes. 4, record 5, French, - hydrocarbure%20autre%20que%20le%20m%C3%A9thane
Record number: 5, Textual support number: 2 OBS
HCNM : abréviation non officielle; ne pas l’utiliser seule, pour éviter tout risque de confusion. 5, record 5, French, - hydrocarbure%20autre%20que%20le%20m%C3%A9thane
Record number: 5, Textual support number: 3 OBS
hydrocarbure autre que le méthane; hydrocarbure non méthanique : termes extraits du «Glossaire de l’environnement» et reproduits avec l’autorisation de l’Organisation de coopération et de développement économiques. 6, record 5, French, - hydrocarbure%20autre%20que%20le%20m%C3%A9thane
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Elementos y compuestos químicos
- Cambio climático
Record 5, Main entry term, Spanish
- hidrocarburo que excluye el metano
1, record 5, Spanish, hidrocarburo%20que%20excluye%20el%20metano
correct, masculine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
- hidrocarburo no metánico 1, record 5, Spanish, hidrocarburo%20no%20met%C3%A1nico
correct, masculine noun
Record 5, Textual support, Spanish
Record 6 - internal organization data 2016-12-21
Record 6, English
Record 6, Subject field(s)
- Chemical Elements and Compounds
- Pollutants
Record 6, Main entry term, English
- trihalomethane
1, record 6, English, trihalomethane
correct
Record 6, Abbreviations, English
- THM 1, record 6, English, THM
correct
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Trihalomethanes (THM) are a group of four chemicals that are formed along with other disinfection by products when chlorine or other disinfectants used to control microbial contaminants in drinking water react with naturally occurring organic and inorganic matter in water. The trihalomethanes are chloroform, bromodichloromethane, dibromochloromethane, and bromoform. 2, record 6, English, - trihalomethane
Record number: 6, Textual support number: 1 OBS
trihalomethane; THM: term and abbreviation extracted from the “Glossaire de l’environnement” and reproduced with permission of the Organisation for Economic Co-operation and Development. 3, record 6, English, - trihalomethane
Record 6, French
Record 6, Domaine(s)
- Éléments et composés chimiques
- Agents de pollution
Record 6, Main entry term, French
- trihalométhane
1, record 6, French, trihalom%C3%A9thane
correct, masculine noun
Record 6, Abbreviations, French
- THM 1, record 6, French, THM
correct, masculine noun
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 OBS
Les trihalométhanes comprennent, outre le chloroforme ou trichlorométhane, le bromoforme(ou tribromométhane), le fluoroforme(ou trifluorométhane) ainsi que l'iodoforme(ou triiodométhane). Ces produits sont des dérivés du méthane composés d’un atome de carbone, d’un atome d’hydrogène et de trois atomes d’halogène. 2, record 6, French, - trihalom%C3%A9thane
Record number: 6, Textual support number: 2 OBS
trihalométhane; THM : terme et abréviation extraits du «Glossaire de l’environnement» et reproduits avec l’autorisation de l’Organisation de coopération et de développement économiques. 2, record 6, French, - trihalom%C3%A9thane
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Elementos y compuestos químicos
- Agentes contaminantes
Record 6, Main entry term, Spanish
- trihalometano
1, record 6, Spanish, trihalometano
correct, masculine noun
Record 6, Abbreviations, Spanish
- THM 1, record 6, Spanish, THM
correct, masculine noun
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Compuesto en el cual tres de los átomos de hidrógeno de la molécula de metano han sido reemplazados por átomos de cloro, bromo o yodo. 1, record 6, Spanish, - trihalometano
Record number: 6, Textual support number: 1 OBS
Se puede formar a partir de la materia orgánica del agua que ha sido tratada o desinfectada por halógenos (excepto el flúor) u oxidantes capaces de liberar halógenos. 1, record 6, Spanish, - trihalometano
Record 7 - internal organization data 2014-07-22
Record 7, English
Record 7, Subject field(s)
- Chemical Elements and Compounds
- Petrochemistry
Record 7, Main entry term, English
- halogenated hydrocarbon
1, record 7, English, halogenated%20hydrocarbon
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- halocarbon compound 2, record 7, English, halocarbon%20compound
correct
- halocarbon 3, record 7, English, halocarbon
correct, standardized
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
A compound containing carbon, one or more halogens, and sometimes hydrogen. 4, record 7, English, - halogenated%20hydrocarbon
Record number: 7, Textual support number: 1 CONT
Hazards of refilling compressed refrigerant (halogenated hydrocarbon) gas cylinders ... 5, record 7, English, - halogenated%20hydrocarbon
Record number: 7, Textual support number: 1 OBS
The lower members of the various homologous series are used as refrigerants, propellant gases, fire-extinguishing agents, and blowing agents for urethane foams. When polymerized, they yield plastics characterized by extreme chemical resistance, high electrical resistivity, and good heat resistance. 4, record 7, English, - halogenated%20hydrocarbon
Record number: 7, Textual support number: 2 OBS
halocarbon: term standardized by Environment Canada and the Translation Bureau for use in the National Inventory Report. 6, record 7, English, - halogenated%20hydrocarbon
Record 7, French
Record 7, Domaine(s)
- Éléments et composés chimiques
- Chimie du pétrole
Record 7, Main entry term, French
- hydrocarbure halogéné
1, record 7, French, hydrocarbure%20halog%C3%A9n%C3%A9
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- composé halocarboné 2, record 7, French, compos%C3%A9%20halocarbon%C3%A9
correct, masculine noun
- halocarbone 3, record 7, French, halocarbone
correct, see observation, masculine noun, less frequent
- halocarbure 4, record 7, French, halocarbure
see observation, masculine noun, standardized
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Dérivé d’un hydrocarbure composé de carbone et d’un ou de plusieurs halogènes, ces derniers remplaçant partiellement ou entièrement l’hydrogène. 5, record 7, French, - hydrocarbure%20halog%C3%A9n%C3%A9
Record number: 7, Textual support number: 1 OBS
Les hydrocarbures halogénés comprennent les halométhanes, qui n’ ont qu'un seul atome de carbone, et les haloéthanes, qui ont deux atomes de carbone. Contrairement aux composés chlorofluorocarbonés, qui ne contiennent que deux halogènes, le chlore et le fluor, les hydrocarbures halogénés peuvent contenir tous les autres halogènes : brome, iode et astate; cependant ces derniers éléments sont rarement utilisés et c'est pour cette raison qu'on emploie parfois le terme chlorofluorocarbone au sens d’hydrocarbure halogéné. 6, record 7, French, - hydrocarbure%20halog%C3%A9n%C3%A9
Record number: 7, Textual support number: 2 OBS
L’ordre de préséance des termes français devrait être : «hydrocarbure halogéné», «halocarbone» et «halocarbure». Le terme «hydrocarbure halogéné» remplace fort bien le terme «halocarbure» pour traduire le mot anglais «halocarbon». Le terme «halocarbone» qui est meilleur que le terme «halocarbure» est cependant d’usage peu fréquent. Le terme «halocarbure» quoique de forme discutable peut être employé dans un contexte de continuité, particulièrement si le nom était généralement accepté et utilisé antérieurement (par ex. dans un règlement fédéral). 7, record 7, French, - hydrocarbure%20halog%C3%A9n%C3%A9
Record number: 7, Textual support number: 3 OBS
halocarbure : terme normalisé par Environnement Canada et le Bureau de la traduction dans le cadre du Rapport d’inventaire national. 8, record 7, French, - hydrocarbure%20halog%C3%A9n%C3%A9
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Elementos y compuestos químicos
- Petroquímica
Record 7, Main entry term, Spanish
- hidrocarburo halogenado
1, record 7, Spanish, hidrocarburo%20halogenado
correct, masculine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
Record 7, Textual support, Spanish
Record number: 7, Textual support number: 1 DEF
Hidrocarburo en el que uno o más de sus átomos de hidrógeno son sustituidos por flúor, cloro, bromo o yodo, lo que incrementa la acción narcótica y anestésica de los hidrocarburos alifáticos. Muchos son tóxicos e inflamables. 2, record 7, Spanish, - hidrocarburo%20halogenado
Record 8 - internal organization data 2014-05-27
Record 8, English
Record 8, Subject field(s)
- Anti-pollution Measures
- Chemistry
- Biochemistry
Record 8, Main entry term, English
- organic compound
1, record 8, English, organic%20compound
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
Chemical compounds based on carbon chains or rings and also containing hydrogen, with or without oxygen, nitrogen, and other elements. 2, record 8, English, - organic%20compound
Record number: 8, Textual support number: 1 PHR
Family of organic compound. 3, record 8, English, - organic%20compound
Record 8, French
Record 8, Domaine(s)
- Mesures antipollution
- Chimie
- Biochimie
Record 8, Main entry term, French
- composé organique
1, record 8, French, compos%C3%A9%20organique
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Un composé chimique est dit «organique »lorsque sa molécule possède au moins un atome de carbone(C) lié, au moins, à un atome d’hydrogène(H). Il existe donc une très grande diversité de composés organiques qui peuvent se rencontrer à l'état solide, liquide ou gazeux. De façon générale, les molécules organiques jouent un rôle important dans les réactions chimiques se produisant dans les organismes vivants et sont au cœur de l'industrie humaine via notamment les produits dérivés du pétrole. 2, record 8, French, - compos%C3%A9%20organique
Record number: 8, Textual support number: 1 PHR
Famille de composés organiques. 3, record 8, French, - compos%C3%A9%20organique
Record number: 8, Textual support number: 2 PHR
Composé organique peu soluble. 3, record 8, French, - compos%C3%A9%20organique
Record 8, Spanish
Record 8, Campo(s) temático(s)
- Medidas contra la contaminación
- Química
- Bioquímica
Record 8, Main entry term, Spanish
- compuesto orgánico
1, record 8, Spanish, compuesto%20org%C3%A1nico
correct, masculine noun
Record 8, Abbreviations, Spanish
Record 8, Synonyms, Spanish
Record 8, Textual support, Spanish
Record number: 8, Textual support number: 1 DEF
Compuesto que contiene carbono, salvo el dióxido de carbono y algunos carbonatos. 2, record 8, Spanish, - compuesto%20org%C3%A1nico
Record 9 - internal organization data 2013-09-03
Record 9, English
Record 9, Subject field(s)
- Chemistry
Record 9, Main entry term, English
- sigma adduct
1, record 9, English, sigma%20adduct
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- sigma complex 1, record 9, English, sigma%20complex
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 DEF
The product formed by the attachment of an electrophilic or nucleophilic entering group or of a radical to a ring carbon atom of an aromatic species such that a new sigma-bond is formed and the original conjugation is disrupted. 1, record 9, English, - sigma%20adduct
Record number: 9, Textual support number: 1 OBS
The word "sigma" must be replaced by the corresponding Greek letter. 2, record 9, English, - sigma%20adduct
Record 9, French
Record 9, Domaine(s)
- Chimie
Record 9, Main entry term, French
- adduit-sigma
1, record 9, French, adduit%2Dsigma
correct, see observation, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
- complexe-sigma 1, record 9, French, complexe%2Dsigma
correct, masculine noun
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Produit formé par fixation d’un groupe entrant électrophile ou nucléophile, ou d’un radical, sur un atome de carbone du cycle d’une espèce aromatique de façon telle qu'une nouvelle liaison-sigma soit formée et que la conjugaison initiale soit interrompue. 1, record 9, French, - adduit%2Dsigma
Record number: 9, Textual support number: 1 OBS
Le terme «complexe-sigma» est généralement utilisé, mais [...] le terme «adduit» est mieux approprié. On peut utiliser ce terme pour désigner de façon générale les adduits analogues, formés à partir de systèmes insaturés (et conjugués). 1, record 9, French, - adduit%2Dsigma
Record number: 9, Textual support number: 2 OBS
Le mot «sigma» doit être remplacé par la lettre grecque correspondante. 2, record 9, French, - adduit%2Dsigma
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2013-08-30
Record 10, English
Record 10, Subject field(s)
- Chemistry
Record 10, Main entry term, English
- alpha-
1, record 10, English, alpha%2D
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
- a 1, record 10, English, a
correct, see observation
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
A prefix denoting the position of a substituting atom or group in an organic compound. The Greek letters alpha, beta, gamma, etc., are usually not identical with the IUPAC numbering system, 1, 2, 3, etc., since they do not start from the same carbon atom. However, alpha and beta are used with naphthalene ring compounds to show the 1 and 2 positions respectively. Alpha, beta, etc. are also used to designate attachment to the side chain of a ring compound. 1, record 10, English, - alpha%2D
Record number: 10, Textual support number: 1 OBS
"a" refers to the Greek letter alpha. 2, record 10, English, - alpha%2D
Record 10, French
Record 10, Domaine(s)
- Chimie
Record 10, Main entry term, French
- alpha-
1, record 10, French, alpha%2D
correct, see observation
Record 10, Abbreviations, French
Record 10, Synonyms, French
- a 1, record 10, French, a
correct, see observation
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
1. Préfixe servant à désigner l’un de deux ou de plusieurs isomères. (Par ex., dans la série du naphtalène : a-naphtol). 1, record 10, French, - alpha%2D
Record number: 10, Textual support number: 2 DEF
2. Préfixe utilisé dans la nomenclature stéréochimique des sucres et des stérols. 1, record 10, French, - alpha%2D
Record number: 10, Textual support number: 3 DEF
3. Préfixe indiquant que deux fonctions ne sont séparées par aucun atome de carbone. 1, record 10, French, - alpha%2D
Record number: 10, Textual support number: 1 OBS
La lettre «a» représente la lettre grecque alpha; «alpha» et «a» s’écrivent en italiques. 2, record 10, French, - alpha%2D
Record number: 10, Textual support number: 2 OBS
[...] les préfixes de position [...] sont imprimés en lettres italiques [...] [et ils] n’interviennent pas dans une classification par ordre alphabétique. [Fascicule de documentation AFNOR intitulé : chimie organique. Mode d’écriture des noms systématiques - numéro T01-101, sept. 1969]. 3, record 10, French, - alpha%2D
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2012-02-01
Record 11, English
Record 11, Subject field(s)
- Chemistry
Record 11, Main entry term, English
- chiral
1, record 11, English, chiral
correct, adjective
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
Said of a structure that lacks both a plane of symmetry and a center of symmetry. 2, record 11, English, - chiral
Record 11, French
Record 11, Domaine(s)
- Chimie
Record 11, Main entry term, French
- chiral
1, record 11, French, chiral
correct, adjective
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 DEF
Se dit d’un corps dont la molécule n’ est pas superposable à son image prise dans un miroir plan, p. ex. : d’une substance organique renfermant un atome de carbone, avec quatre substituants différents, d’une substance organique ayant une chiralité due à des hétéroatomes. 2, record 11, French, - chiral
Record 11, Spanish
Record 11, Campo(s) temático(s)
- Química
Record 11, Main entry term, Spanish
- chiral
1, record 11, Spanish, chiral
adjective
Record 11, Abbreviations, Spanish
Record 11, Synonyms, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2012-01-17
Record 12, English
Record 12, Subject field(s)
- Neology and Linguistic Borrowing
Record 12, Main entry term, English
- heteroatom
1, record 12, English, heteroatom
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
An atom which substitutes for one of the atoms in a hydrocarbon aromatic structure. 1, record 12, English, - heteroatom
Record 12, French
Record 12, Domaine(s)
- Néologie et emprunts
Record 12, Main entry term, French
- hétéroatome
1, record 12, French, h%C3%A9t%C3%A9roatome
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 DEF
Atome autre que le carbone, intercalé à l'un des sommets d’un cycle de hydrates de carbone. 1, record 12, French, - h%C3%A9t%C3%A9roatome
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2011-10-27
Record 13, English
Record 13, Subject field(s)
- Chemistry
Record 13, Main entry term, English
- ambident
1, record 13, English, ambident
adjective
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 DEF
Is said of a reagent or substrate which can have two or more attacking sites. The term is more commonly applied to conjugated nucleophiles and also to the vicinally ambient cyanide ion, nitrite ion, and unsymmetrical hydrazines. 2, record 13, English, - ambident
Record 13, French
Record 13, Domaine(s)
- Chimie
Record 13, Main entry term, French
- ambident
1, record 13, French, ambident
see observation, adjective
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 DEF
Qualifie une entité moléculaire qui possède deux sites distincts en forte interaction, susceptibles au cours d’une réaction d’être l’un ou l’autre le siège d’une nouvelle liaison. 2, record 13, French, - ambident
Record number: 13, Textual support number: 1 OBS
On peut citer comme exemples : l'ion énolate, qui peut réagir avec les électrophiles soit par l'atome de carbone en ß, soit par l'atome d’oxygène, et l'ion d’oxygène. 2, record 13, French, - ambident
Record number: 13, Textual support number: 2 OBS
Source des termes anglais et français et des contextes : Projet d’arrêté relatif à la terminologie de la chimie (avril 1994) de la Commission ministérielle de terminologie de la chimie (sous les auspices de la Délégation générale à la langue française). 2, record 13, French, - ambident
Record number: 13, Textual support number: 3 OBS
Lorsque l’interaction entre les centres réactionnels est faible ou inexistante, par exemple dans le cas de dianions d’acides carboxyliques, les entités moléculaires ne sont pas considérées comme ambidentes. Le qualificatif de «bifonctionnel» est alors mieux adapté. 3, record 13, French, - ambident
Record number: 13, Textual support number: 4 OBS
La racine latine implique deux centres réactionnels mais le terme a dans le passé été appliqué à tort à des espèces chimiques ayant plus de deux centres. Dans de tels cas, le terme polycoordiné (ou, encore mieux, multicoordiné) serait plus approprié. Voir Gompper (1964); Smith et DeWall (1977). 3, record 13, French, - ambident
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2011-08-26
Record 14, English
Record 14, Subject field(s)
- Chemical Elements and Compounds
- Biochemistry
- Plastics Manufacturing
- Tanning and Tanning Oils (Leather Ind.)
Universal entry(ies) Record 14
Record 14, Main entry term, English
- glyceraldehyde
1, record 14, English, glyceraldehyde
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
- (±)-glyceraldehyde 2, record 14, English, %28%C2%B1%29%2Dglyceraldehyde
correct
- 2,3-dihydroxypropanal 3, record 14, English, 2%2C3%2Ddihydroxypropanal
correct
- DL-glyceraldehyde 2, record 14, English, DL%2Dglyceraldehyde
avoid
- DL-glyceric aldehyde 4, record 14, English, DL%2Dglyceric%20aldehyde
former designation, avoid
- glyceric aldehyde 5, record 14, English, glyceric%20aldehyde
former designation, avoid
- glycerose 6, record 14, English, glycerose
former designation, avoid
- 56-82-6 7, record 14, English, 56%2D82%2D6
correct, see observation
Record 14, Textual support, English
Record number: 14, Textual support number: 1 DEF
A sweet crystalline compound that exists in solution as the monomeric dihydroxy aldehyde HOCH2CHOHCHO in dextrorotatory, levorotatory, and racemic forms but in the anhydrous state only as the crystalline dimer C6H12O6, that is formed as an intermediate in carbohydrate metabolism by the breakdown of sugars, that yields glycerol on reduction, and that may be regarded as a triose and the simplest aldose capable of existing in both D- and L-stereoisomeric forms, which serve as reference standards for differentiating the stereoisomeric forms of all other sugars and also of other stereoisomeric compounds. 8, record 14, English, - glyceraldehyde
Record number: 14, Textual support number: 1 OBS
The simplest chiral sugar. Its dextrorotatory form, D-glyceraldehyde, was taken as the standard of D configuration for sugars. 9, record 14, English, - glyceraldehyde
Record number: 14, Textual support number: 2 OBS
This compound is used in biochemical research, as an intermediate, in nutrition, in the preparation of polyesters, in adhesives, as a cellulose modifier, in leather tanning. 9, record 14, English, - glyceraldehyde
Record number: 14, Textual support number: 3 OBS
Chemical formula: HOCH2CH2OCHO or C3H6O3 10, record 14, English, - glyceraldehyde
Record 14, French
Record 14, Domaine(s)
- Éléments et composés chimiques
- Biochimie
- Plasturgie
- Tannin et huile de tannage (Ind. du cuir)
Entrée(s) universelle(s) Record 14
Record 14, Main entry term, French
- glycéraldéhyde
1, record 14, French, glyc%C3%A9rald%C3%A9hyde
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
- 2,3-dihydroxypropanal 2, record 14, French, 2%2C3%2Ddihydroxypropanal
correct, masculine noun
- aldéhyde glycérique 3, record 14, French, ald%C3%A9hyde%20glyc%C3%A9rique
former designation, avoid, masculine noun
- dihydroxy-2,3 propanal 4, record 14, French, dihydroxy%2D2%2C3%20propanal
avoid, masculine noun
- dihydroxy-2-3-propanal 5, record 14, French, dihydroxy%2D2%2D3%2Dpropanal
avoid, masculine noun
- glycérine-aldéhyde 5, record 14, French, glyc%C3%A9rine%2Dald%C3%A9hyde
avoid, masculine noun
Record 14, Textual support, French
Record number: 14, Textual support number: 1 DEF
Le plus simple des aldoses contenant un atome de carbone chiral. 6, record 14, French, - glyc%C3%A9rald%C3%A9hyde
Record number: 14, Textual support number: 1 OBS
Depuis Emil Fischer, le glycéraldéhyde est pris comme composé de référence pour désigner la configuration des sucres. 6, record 14, French, - glyc%C3%A9rald%C3%A9hyde
Record number: 14, Textual support number: 2 OBS
Formule chimique : HOCH2CH2OCHO ou C3H6O3 7, record 14, French, - glyc%C3%A9rald%C3%A9hyde
Record 14, Spanish
Record 14, Campo(s) temático(s)
- Elementos y compuestos químicos
- Bioquímica
- Fabricación de plásticos
- Curtido y aceites para curtido (Ind. del cuero)
Entrada(s) universal(es) Record 14
Record 14, Main entry term, Spanish
- gliceraldehído
1, record 14, Spanish, gliceraldeh%C3%ADdo
masculine noun
Record 14, Abbreviations, Spanish
Record 14, Synonyms, Spanish
Record 14, Textual support, Spanish
Record number: 14, Textual support number: 1 OBS
Fórmula química: HOCH2CH2OCHO o C3H6O3 2, record 14, Spanish, - gliceraldeh%C3%ADdo
Record 15 - internal organization data 2011-08-23
Record 15, English
Record 15, Subject field(s)
- Chemistry
- Paints and Varnishes (Industries)
Record 15, Main entry term, English
- methacrylate resin
1, record 15, English, methacrylate%20resin
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
- methacrylic resin 2, record 15, English, methacrylic%20resin
Record 15, Textual support, English
Record number: 15, Textual support number: 1 DEF
Thermoplastic polymer based on esters of acrylic and methacrylic acid. 3, record 15, English, - methacrylate%20resin
Record number: 15, Textual support number: 1 OBS
Methacrylic acid differs [from acrylic acid] by having a methyl group in place of the alpha hydrogen ... 4, record 15, English, - methacrylate%20resin
Record 15, French
Record 15, Domaine(s)
- Chimie
- Peintures et vernis (Industries)
Record 15, Main entry term, French
- résine méthacrylique
1, record 15, French, r%C3%A9sine%20m%C3%A9thacrylique
correct, feminine noun, standardized
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 DEF
Résine acrylique particulière dans laquelle, à chaque atome de carbone de la chaîne principale porteur d’un des radicaux substituant caractéristique de cette résine, est fixé également un radical méthylique. [Définition normalisée par l'AFNOR et reproduite avec son autorisation. ] 1, record 15, French, - r%C3%A9sine%20m%C3%A9thacrylique
Record number: 15, Textual support number: 1 OBS
résine méthacrylique : terme normalisé par l’AFNOR. 2, record 15, French, - r%C3%A9sine%20m%C3%A9thacrylique
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 2011-08-10
Record 16, English
Record 16, Subject field(s)
- Chemistry
- Biochemistry
Record 16, Main entry term, English
- chiral atom
1, record 16, English, chiral%20atom
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
- chiral center 2, record 16, English, chiral%20center
correct
- chiral centre 3, record 16, English, chiral%20centre
correct
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
Because compounds with asymmetric carbon atoms can be regarded as occurring in left- and righthanded forms, they are called chiral compounds (Greek, chiros, "hand"). Correspondingly, the asymmetric atom or center of chiral compounds is called the chiral atom or center. 1, record 16, English, - chiral%20atom
Record 16, French
Record 16, Domaine(s)
- Chimie
- Biochimie
Record 16, Main entry term, French
- atome chiral
1, record 16, French, atome%20chiral
correct, masculine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
- centre chiral 2, record 16, French, centre%20chiral
correct, masculine noun
Record 16, Textual support, French
Record number: 16, Textual support number: 1 DEF
Atome maintenant un ensemble d’atomes ou de groupes d’atomes dans une disposition non superposable à son image dans un miroir. 3, record 16, French, - atome%20chiral
Record number: 16, Textual support number: 1 CONT
Les composés contenant un carbone asymétrique existent sous deux formes droite et gauche; ils ont donc été appelés des composés chiraux(en grec chiros signifie la main) et l'atome asymétrique ou centre du composé chiral a donc été appelé atome chiral ou centre chiral. 1, record 16, French, - atome%20chiral
Record number: 16, Textual support number: 1 OBS
centre chiral : terme et définition publiés au Journal officiel de la République française le 18 avril 2001. 4, record 16, French, - atome%20chiral
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 2011-08-05
Record 17, English
Record 17, Subject field(s)
- Chemistry
Record 17, Main entry term, English
- tautomer
1, record 17, English, tautomer
correct
Record 17, Abbreviations, English
Record 17, Synonyms, English
- tautomeric compound 2, record 17, English, tautomeric%20compound
correct
Record 17, Textual support, English
Record number: 17, Textual support number: 1 DEF
tautomers: Structural isomers of different energies which are interconvertible via a low energy barrier ... 3, record 17, English, - tautomer
Record number: 17, Textual support number: 1 OBS
... the isomerization involves atom or group migration. 3, record 17, English, - tautomer
Record 17, French
Record 17, Domaine(s)
- Chimie
Record 17, Main entry term, French
- tautomère
1, record 17, French, tautom%C3%A8re
correct, masculine noun
Record 17, Abbreviations, French
Record 17, Synonyms, French
Record 17, Textual support, French
Record number: 17, Textual support number: 1 DEF
[tautomères : Isomères] dont les structures diffèrent par la position d’un atome, en général d’hydrogène, et d’une ou de plusieurs liaisons multiples et qui sont capables de se transformer facilement et réversiblement l’un en l’autre. 2, record 17, French, - tautom%C3%A8re
Record number: 17, Textual support number: 1 CONT
Ce type d’isomérie porte le nom [...] de tautomérie et les isomères sont des tautomères; elle est habituellement liée au transfert d’un proton d’un atome de carbone à un atome d’un élément polyvalent avec migration d’une double liaison [...] 3, record 17, French, - tautom%C3%A8re
Record number: 17, Textual support number: 1 OBS
tautomère : terme et définition publiés au Journal officiel de la République française le 18 avril 2001. 4, record 17, French, - tautom%C3%A8re
Record 17, Spanish
Record 17, Campo(s) temático(s)
- Química
Record 17, Main entry term, Spanish
- tautómero
1, record 17, Spanish, taut%C3%B3mero
masculine noun
Record 17, Abbreviations, Spanish
Record 17, Synonyms, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 2011-08-05
Record 18, English
Record 18, Subject field(s)
- Chemical Elements and Compounds
- Biochemistry
Record 18, Main entry term, English
- carbohydrate
1, record 18, English, carbohydrate
correct
Record 18, Abbreviations, English
Record 18, Synonyms, English
- hydrate of carbon 2, record 18, English, hydrate%20of%20carbon
correct
- saccharide 2, record 18, English, saccharide
correct
Record 18, Textual support, English
Record number: 18, Textual support number: 1 DEF
An organic compound of carbon with oxygen and hydrogen in the proportion to form water. 3, record 18, English, - carbohydrate
Record number: 18, Textual support number: 1 OBS
The generic term carbohydrate includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more terminal groups to carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom, an amino group, thiol group or similar groups. It also includes derivatives of these compounds. 4, record 18, English, - carbohydrate
Record number: 18, Textual support number: 2 OBS
carbohydrates: Originally, compounds such as aldoses and ketoses, having the stoichiometric formula Cn(H2O)n, hence "hydrates of carbon." 4, record 18, English, - carbohydrate
Record number: 18, Textual support number: 3 OBS
[Carbohydrates] are divided into sugars proper ..., grape-sugars or glucoses ..., and amyloses, comprising starch and woody fibre ... 3, record 18, English, - carbohydrate
Record number: 18, Textual support number: 4 OBS
Carbohydrates are important providers of energy. They are formed in nature through photosynthesis and are the precursors of the hydrocarbon energy stores in fossil fuels. 5, record 18, English, - carbohydrate
Record number: 18, Textual support number: 5 OBS
Compare with glucidic, of which the term carbohydrate, is sometimes used as a synonym when used as a noun modifier (for example, in expressions such as carbohydrate content). 5, record 18, English, - carbohydrate
Record 18, Key term(s)
- carbon hydrate
Record 18, French
Record 18, Domaine(s)
- Éléments et composés chimiques
- Biochimie
Record 18, Main entry term, French
- hydrate de carbone
1, record 18, French, hydrate%20de%20carbone
correct, see observation, masculine noun
Record 18, Abbreviations, French
Record 18, Synonyms, French
- glucide 2, record 18, French, glucide
correct, see observation, masculine noun
- saccharide 3, record 18, French, saccharide
correct, masculine noun
- carbohydrate 4, record 18, French, carbohydrate
correct, see observation, masculine noun, less frequent
Record 18, Textual support, French
Record number: 18, Textual support number: 1 DEF
Dénomination générique qui couvre les monosaccharides, les disaccharides, les oligosaccharides et les polysaccharides [ainsi que] leurs produits de réduction, tels les alditols, leurs produits d’oxydation, tels les acides sacchariques monosaccharides, [et] leurs dérivés obtenus par remplacement d’un ou de plusieurs groupes hydroxy, par exemple, par un atome d’hydrogène, un groupe amino ou un groupe thiol. 5, record 18, French, - hydrate%20de%20carbone
Record number: 18, Textual support number: 1 OBS
hydrates de carbone; carbohydrates. Ces noms tirent leur origine de leur composition chimique : Cn(H2O)n; ce sont des molécules organiques, sucres simples (glucosamine, monosaccharides : glucose, fructose, galactose ou dissacharides : saccharose, lactose, maltose, etc.) ou sucres complexes (polysaccharides : amidon, glycogène, cellulose, etc.), composées d’hydrogène, de carbone et d’oxygène. 6, record 18, French, - hydrate%20de%20carbone
Record number: 18, Textual support number: 2 OBS
Au début du XXième siècle, les dénominations glucides et hydrates de carbone étaient des synonymes exacts pour indiquer la composition générale des hydrates de carbone, une molécule d’eau liée à un atome de carbone. Avec le temps et la découverte de nouvelles molécules en chimie et en biochimie, la définition des hydrates de carbone formés de carbone, hydrogène et oxygène s’est élargie pour englober des molécules contenant de l'azote, du soufre ou du phosphore. Aujourd’hui, les glucides comprennent aussi ces nouvelles molécules telles que la glucosamine. 6, record 18, French, - hydrate%20de%20carbone
Record number: 18, Textual support number: 3 OBS
hydrate de carbone : terme surtout utilisé par les chimistes (en relation avec les substances naturelles). 6, record 18, French, - hydrate%20de%20carbone
Record number: 18, Textual support number: 4 OBS
glucide : terme surtout utilisé en biochimie et en chimie alimentaire (en relation avec la matière vivante). 6, record 18, French, - hydrate%20de%20carbone
Record 18, Spanish
Record 18, Campo(s) temático(s)
- Elementos y compuestos químicos
- Bioquímica
Record 18, Main entry term, Spanish
- hidrato de carbono
1, record 18, Spanish, hidrato%20de%20carbono
correct, masculine noun
Record 18, Abbreviations, Spanish
Record 18, Synonyms, Spanish
- glúcido 2, record 18, Spanish, gl%C3%BAcido
correct, masculine noun
- carbohidrato 3, record 18, Spanish, carbohidrato
correct, masculine noun
- sacárido 2, record 18, Spanish, sac%C3%A1rido
correct, masculine noun
- azúcar 2, record 18, Spanish, az%C3%BAcar
correct, masculine noun, less frequent
Record 18, Textual support, Spanish
Record number: 18, Textual support number: 1 DEF
Compuesto de carbono, hidrógeno y oxígeno en el que la proporción de hidrógeno a oxígeno es la misma que en el agua. 4, record 18, Spanish, - hidrato%20de%20carbono
Record number: 18, Textual support number: 1 CONT
Los carbohidratos, o hidratos de carbono, son compuestos orgánicos constituidos por átomos de carbono, oxígeno e hidrógeno. También se les denomina azúcares, [...] o sacáridos. La fórmula básica para los carbohidratos es CH2O. Podemos distinguir tres clases de carbohidratos: Monosacáridos (sacárido que no puede hidrolizarse para obtener sacáridos más pequeños), disacáridos (dos moléculas de monosacáridos) y polisacáridos (tres o más moléculas de monosacáridos). 2, record 18, Spanish, - hidrato%20de%20carbono
Record number: 18, Textual support number: 2 CONT
La experimentación con animales ha puesto de manifiesto que ciertos aminoácidos estimulan la formación de células en la mucosa intestinal y que los hidratos de carbono aportan la energía que aquéllas necesitan. 5, record 18, Spanish, - hidrato%20de%20carbono
Record 19 - internal organization data 2011-04-14
Record 19, English
Record 19, Subject field(s)
- Analytical Chemistry
Record 19, Main entry term, English
- keto-enol equilibrium
1, record 19, English, keto%2Denol%20equilibrium
correct
Record 19, Abbreviations, English
Record 19, Synonyms, English
Record 19, Textual support, English
Record 19, French
Record 19, Domaine(s)
- Chimie analytique
Record 19, Main entry term, French
- équilibre céto-énolique
1, record 19, French, %20%C3%A9quilibre%20c%C3%A9to%2D%C3%A9nolique
correct, masculine noun
Record 19, Abbreviations, French
Record 19, Synonyms, French
Record 19, Textual support, French
Record number: 19, Textual support number: 1 CONT
Équilibre(ou tautomérie) céto-énolique. Les énols sont les formes tautomères des aldéhydes et des cétones énolisables. Plus énolisables(«transformables en énol»), c'est-à-dire possédant un atome d’hydrogène sur le carbone en alpha de la fonction carbonyle. Ces composés carbonylés sont en équilibre avec leur forme tautomère, leur énol. On appelle cet équilibre l'équilibre céto-énolique. 2, record 19, French, - %20%C3%A9quilibre%20c%C3%A9to%2D%C3%A9nolique
Record 19, Spanish
Record 19, Textual support, Spanish
Record 20 - internal organization data 2011-03-21
Record 20, English
Record 20, Subject field(s)
- Chemical Elements and Compounds
- Petrochemistry
Record 20, Main entry term, English
- alkyl group
1, record 20, English, alkyl%20group
correct
Record 20, Abbreviations, English
- R 2, record 20, English, R
correct, see observation
Record 20, Synonyms, English
Record 20, Textual support, English
Record number: 20, Textual support number: 1 DEF
A paraffinic hydrocarbon group which may be derived from an alkane by dropping one hydrogen from the formula. Examples are methyl, ... ethyl, ... propyl, ... isopropyl ... Such groups are often represented in formulas by the letter R and have the generic formula CnH2n+1. 3, record 20, English, - alkyl%20group
Record number: 20, Textual support number: 2 DEF
alkyl groups: Univalent groups derived from alkanes by removal of a hydrogen atom from any carbon atom -CnH2n+. 4, record 20, English, - alkyl%20group
Record number: 20, Textual support number: 1 OBS
The [alkyl] groups derived by removal of a hydrogen atom from a terminal carbon atom of unbranched alkanes form a subclass of normal alkyl (n-alkyl) groups H[CH2]n. The groups RCH2, RxCH (R [not equal to] H, and R3C (R [not equal to] H are primary, secondary and tertiary alkyl groups, respectively. 4, record 20, English, - alkyl%20group
Record number: 20, Textual support number: 2 OBS
n-alkyl: The letter "n" must be italicized. 5, record 20, English, - alkyl%20group
Record 20, Key term(s)
- alkyl groups
Record 20, French
Record 20, Domaine(s)
- Éléments et composés chimiques
- Chimie du pétrole
Record 20, Main entry term, French
- groupe alkyle
1, record 20, French, groupe%20alkyle
correct, masculine noun
Record 20, Abbreviations, French
- R 2, record 20, French, R
correct
Record 20, Synonyms, French
- groupe alcoyle 3, record 20, French, groupe%20alcoyle
avoid, masculine noun
Record 20, Textual support, French
Record number: 20, Textual support number: 1 DEF
Groupe monovalent dérivé des alcanes par enlèvement d’un atome d’hydrogène à l'un quelconque des atomes de carbone :-CnH2n+1. 4, record 20, French, - groupe%20alkyle
Record number: 20, Textual support number: 1 OBS
[Les groupes alkyles] qui dérivent des alcanes linéaires par enlèvement d’un atome d’hydrogène à un atome de carbone terminal constituent la sous-classe des alkyles normaux(n-alkyles) : H[ CH2]n-. Les groupes RCH2-, R2CH-(R[ non égal à] H) et R3C-(R[ non égal à] H) sont nommés respectivement groupes alkyles primaires, secondaires et tertiaires. 4, record 20, French, - groupe%20alkyle
Record number: 20, Textual support number: 2 OBS
Ne pas confondre avec le terme voisin «groupe alkylé» (en anglais : «alkylated group»), qui désigne les groupes qui renferment un groupe alkyle. 5, record 20, French, - groupe%20alkyle
Record 20, Key term(s)
- groupes alkyle
- groupes alcoyle
- alkyle
- alkyles
- alcoyle
- alcoyles
Record 20, Spanish
Record 20, Campo(s) temático(s)
- Elementos y compuestos químicos
- Petroquímica
Record 20, Main entry term, Spanish
- grupo alquilo
1, record 20, Spanish, grupo%20alquilo
correct, masculine noun
Record 20, Abbreviations, Spanish
Record 20, Synonyms, Spanish
Record 20, Textual support, Spanish
Record number: 20, Textual support number: 1 CONT
Se usa la designación de amina primaria secundaria o terciaria para referirnos al número de grupos alquilos que están unidos al nitrógeno. Así, si la amina tiene un grupo alquilo y dos hidrógenos se le conoce como primaria, si tiene dos alquilos y un hidrógeno, secundaria y con tres grupos alquilo sin hidrógeno, terciaria. 2, record 20, Spanish, - grupo%20alquilo
Record number: 20, Textual support number: 2 CONT
Los halogenuros de alquilo tienen la fórmula general RX, donde R representa un grupo alquilo o alquilo sustituido. 3, record 20, Spanish, - grupo%20alquilo
Record number: 20, Textual support number: 3 CONT
Bencenos sustituidos por grupos alquilo se nombran de dos formas diferentes dependiendo del tamaño del grupo alquilo. 4, record 20, Spanish, - grupo%20alquilo
Record 20, Key term(s)
- grupos alquilo
- grupos alquilos
- alquilo
- alquilos
Record 21 - internal organization data 2011-02-11
Record 21, English
Record 21, Subject field(s)
- Chemistry
Record 21, Main entry term, English
- corrinoid
1, record 21, English, corrinoid
correct
Record 21, Abbreviations, English
Record 21, Synonyms, English
Record 21, Textual support, English
Record number: 21, Textual support number: 1 DEF
A member of a group of compounds containing four reduced pyrrole rings joined into a macrocyclic ring by links between their [alpha] positions; three of these links are formed by a one-carbon unit (methylidyne radicals) and the other by a direct Calpha-Calpha bond. They include various B-12 vitamins, factors, and derivatives based upon the skeleton of corrin, C19 H22 N4. 1, record 21, English, - corrinoid
Record number: 21, Textual support number: 1 OBS
The word "alpha" must be replaced by the corresponding Greek letter. 2, record 21, English, - corrinoid
Record 21, French
Record 21, Domaine(s)
- Chimie
Record 21, Main entry term, French
- corrinoïde
1, record 21, French, corrino%C3%AFde
correct
Record 21, Abbreviations, French
Record 21, Synonyms, French
Record 21, Textual support, French
Record number: 21, Textual support number: 1 DEF
Un des composés faisant partie de l'ensemble des produits contenant quatre noyaux pyrroles réduits qui sont reliés par leurs positions [alpha] de manière à former un macrocycle; trois de ces liaisons sont formées par une unité contenant un atome de carbone(groupes méthylidynes) et l'autre par une liaison directe C[ alpha]-C[ alpha]. Ils comportent divers facteurs et dérivés de la vitamine B-12 dont le squelette est fondé sur celui de la corrine, C19 H22 [N indice 4]. 1, record 21, French, - corrino%C3%AFde
Record number: 21, Textual support number: 1 OBS
Le mot «alpha» doit être remplacé par la lettre grecque correspondante. 2, record 21, French, - corrino%C3%AFde
Record 21, Spanish
Record 21, Textual support, Spanish
Record 22 - internal organization data 2011-01-31
Record 22, English
Record 22, Subject field(s)
- Chemical Elements and Compounds
- Pollutants
- Climate Change
Universal entry(ies) Record 22
Record 22, Main entry term, English
- 1-chloro-1,1-difluoroethane
1, record 22, English, 1%2Dchloro%2D1%2C1%2Ddifluoroethane
correct, see observation
Record 22, Abbreviations, English
Record 22, Synonyms, English
- 1,1,1-chlorodifluoroethane 2, record 22, English, 1%2C1%2C1%2Dchlorodifluoroethane
avoid
- 1,1,1-difluorochloroethane 2, record 22, English, 1%2C1%2C1%2Ddifluorochloroethane
avoid
- difluoromonochloroethane 2, record 22, English, difluoromonochloroethane
avoid
- Freon 142b 3, record 22, English, Freon%20142b
correct
- F 142b 3, record 22, English, F%20142b
correct
- fluorocarbon-142b 4, record 22, English, fluorocarbon%2D142b
correct
- R 142b 3, record 22, English, R%20142b
correct
- Halon 2.210 3, record 22, English, Halon%202%2E210
correct
- CFC 142b 5, record 22, English, CFC%20142b
correct
- CFC-142b 6, record 22, English, CFC%2D142b
correct
- HCFC-142b 7, record 22, English, HCFC%2D142b
correct
- HCFC 142b 8, record 22, English, HCFC%20142b
correct
Record 22, Textual support, English
Record number: 22, Textual support number: 1 DEF
A partially halogenated chlorofluoroethane used as a solvent and [as] an intermediary [which is] suspected of depleting the ozone layer. 9, record 22, English, - 1%2Dchloro%2D1%2C1%2Ddifluoroethane
Record number: 22, Textual support number: 1 CONT
"DuPont," said the report, "has recognized the potential of CFC-22 as a substitute for refrigeration, air-conditioning, propellants and blowing agents." It is more expensive than F-11 and F-12; but let nobody tell you that substitutes do not exist (that same report, by the way, ended with the note "other substitutes being considered include CFCs 142b and 152a, both of which are currently in production"). 10, record 22, English, - 1%2Dchloro%2D1%2C1%2Ddifluoroethane
Record number: 22, Textual support number: 1 OBS
1-chloro-1,1-difluoroethane: form recommended by the IUPAC (International Union of Pure and Applied Chemistry). 1, record 22, English, - 1%2Dchloro%2D1%2C1%2Ddifluoroethane
Record number: 22, Textual support number: 2 OBS
Chemical formula: CH3CClF2 or C2ClF2H3 11, record 22, English, - 1%2Dchloro%2D1%2C1%2Ddifluoroethane
Record 22, French
Record 22, Domaine(s)
- Éléments et composés chimiques
- Agents de pollution
- Changements climatiques
Entrée(s) universelle(s) Record 22
Record 22, Main entry term, French
- 1-chloro-1,1-difluoroéthane
1, record 22, French, 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
correct, see observation, masculine noun
Record 22, Abbreviations, French
Record 22, Synonyms, French
- chloro-1 difluoro-1,1 éthane 2, record 22, French, chloro%2D1%20difluoro%2D1%2C1%20%C3%A9thane
avoid, masculine noun
- chlorodifluoroéthane 2, record 22, French, chlorodifluoro%C3%A9thane
avoid, masculine noun
- monochlorodifluoroéthane 3, record 22, French, monochlorodifluoro%C3%A9thane
avoid, masculine noun
- difluomonochloroéthane 4, record 22, French, difluomonochloro%C3%A9thane
avoid, masculine noun
- difluoromonochloréthane 5, record 22, French, difluoromonochlor%C3%A9thane
avoid, masculine noun
- Fréon 142b 3, record 22, French, Fr%C3%A9on%20142b
correct, masculine noun
- F 142b 3, record 22, French, F%20142b
correct, masculine noun
- R 142b 3, record 22, French, R%20142b
correct, masculine noun
- CFC 142b 3, record 22, French, CFC%20142b
correct, masculine noun
- CFC-142b 6, record 22, French, CFC%2D142b
correct, masculine noun
- HCFC-142b 6, record 22, French, HCFC%2D142b
correct, masculine noun
- HCFC 142b 6, record 22, French, HCFC%20142b
correct, masculine noun
- Halon 2.210 3, record 22, French, Halon%202%2E210
correct, masculine noun
Record 22, Textual support, French
Record number: 22, Textual support number: 1 DEF
Isomère d’un chlorofluoroéthane partiellement halogéné, utilisé comme solvant et comme intermédiaire, qu’on soupçonne d’appauvrir la couche d’ozone et que l’on considère comme un gaz à effet de serre mineur. 7, record 22, French, - 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
Record number: 22, Textual support number: 1 OBS
Si une substance possède plusieurs isomères, c'est l'isomère le plus symétrique qui porte le numéro fréon non suivi d’une lettre minuscule. La deuxième substance la plus symétrique, selon la disposition des atomes autour de chaque carbone, portera le numéro fréon suivi de la lettre a et la substance suivante, la lettre b, etc. Ainsi le monochlorodifluoroéthane porte le numéro 142b; on ne parle pas des fréons 142 et 142a commercialement sans intérêt. Il ne faut pas confondre l'indicatif d’isomérie, soit les minuscules a et b, avec la majuscule B, qui signale la présence d’un atome d’un brome dans un dérivé(fréon 13B1, par exemple). 8, record 22, French, - 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
Record number: 22, Textual support number: 2 OBS
Le potentiel de réchauffement planétaire du HCFC 142b est de 0,34 - 0,39. 7, record 22, French, - 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
Record number: 22, Textual support number: 3 OBS
1-chloro-1,1-difluoroéthane : forme recommandée par l’UICPA (Union internationale de chimie pure et appliquée). 1, record 22, French, - 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
Record number: 22, Textual support number: 4 OBS
Formule chimique : CH3CClF2 ou C2ClF2H3 7, record 22, French, - 1%2Dchloro%2D1%2C1%2Ddifluoro%C3%A9thane
Record 22, Key term(s)
- 1,1,1-chlorodifluoroéthane
Record 22, Spanish
Record 22, Campo(s) temático(s)
- Elementos y compuestos químicos
- Agentes contaminantes
- Cambio climático
Entrada(s) universal(es) Record 22
Record 22, Main entry term, Spanish
- 1,1,1-clordifluoroetano
1, record 22, Spanish, 1%2C1%2C1%2Dclordifluoroetano
masculine noun
Record 22, Abbreviations, Spanish
Record 22, Synonyms, Spanish
- CFC 142b 1, record 22, Spanish, CFC%20142b
trademark, masculine noun
- Freón 142b 1, record 22, Spanish, Fre%C3%B3n%20142b
trademark, masculine noun
Record 22, Textual support, Spanish
Record number: 22, Textual support number: 1 OBS
Fórmula química: CH3CClF2 o C2ClF2H3 2, record 22, Spanish, - 1%2C1%2C1%2Dclordifluoroetano
Record 23 - internal organization data 2011-01-12
Record 23, English
Record 23, Subject field(s)
- Chemistry
Record 23, Main entry term, English
- carbenium centre
1, record 23, English, carbenium%20centre
correct
Record 23, Abbreviations, English
Record 23, Synonyms, English
Record 23, Textual support, English
Record number: 23, Textual support number: 1 DEF
The three-coordinate carbon atom in a carbenium ion on which the excess positive charge of the ion (other than that located on heteroatoms) may be considered to be largely concentrated i.e. which has the vacant p-orbital. 1, record 23, English, - carbenium%20centre
Record 23, Key term(s)
- carbenium center
Record 23, French
Record 23, Domaine(s)
- Chimie
Record 23, Main entry term, French
- centre carbénium
1, record 23, French, centre%20carb%C3%A9nium
correct, masculine noun
Record 23, Abbreviations, French
Record 23, Synonyms, French
Record 23, Textual support, French
Record number: 23, Textual support number: 1 DEF
L'atome de carbone tricoordiné d’un ion carbénium sur lequel on peut considérer que l'excès de charge positive de l'ion(autre que celles fixées aux hétéroatomes) est concentrée, c'est-à-dire qui possède une orbitale p vacante. 1, record 23, French, - centre%20carb%C3%A9nium
Record number: 23, Textual support number: 1 OBS
Il n’est pas toujours possible d’identifier un tel atome. 1, record 23, French, - centre%20carb%C3%A9nium
Record 23, Spanish
Record 23, Textual support, Spanish
Record 24 - internal organization data 2011-01-10
Record 24, English
Record 24, Subject field(s)
- Chemistry
Record 24, Main entry term, English
- carboxyl group
1, record 24, English, carboxyl%20group
correct
Record 24, Abbreviations, English
Record 24, Synonyms, English
- carboxyl 2, record 24, English, carboxyl
correct
Record 24, Textual support, English
Record number: 24, Textual support number: 1 DEF
[A] functional group of carboxylic acids. 2, record 24, English, - carboxyl%20group
Record number: 24, Textual support number: 1 CONT
All ... amino acids ... except proline have as common denominators a free carboxyl group and a free unsubstituted amino group on the [alpha] carbon atom. They differ from each other in the structure of their distinctive side chains, called the R groups.... The characteristic organic reactions of amino acids are those of their functional groups, i.e., the carboxyl groups, the [alpha] amino groups, and the functional groups present in the different side chains.... The carboxyl groups of all amino acids undergo well-known organic reactions leading to the formation of amides, esters, and acid halides.... Esterification of amino acids with ethanol or benzyl alcohol is often used as a means of protecting the carboxyl group of amino acids in the chemical synthesis of peptides. 3, record 24, English, - carboxyl%20group
Record 24, French
Record 24, Domaine(s)
- Chimie
Record 24, Main entry term, French
- carboxyle
1, record 24, French, carboxyle
correct, masculine noun
Record 24, Abbreviations, French
Record 24, Synonyms, French
- radical carboxyle 2, record 24, French, radical%20carboxyle
correct, masculine noun
- groupe carboxyle 3, record 24, French, groupe%20carboxyle
correct, masculine noun
Record 24, Textual support, French
Record number: 24, Textual support number: 1 DEF
Radical fonctionnel monovalent -COOH des acides organiques, dits acides carboxyliques, se composant des groupes carbonyle CO et hydroxyle -OH, qui s’influencent réciproquement jusqu’à perdre leur individualité. 2, record 24, French, - carboxyle
Record number: 24, Textual support number: 1 CONT
La structure des acides aminés conditionne le repliement des protéines. Dans un acide aminé isolé, quatre groupes chimiques sont liés à un atome de carbone central, le carbone alpha; ces groupes sont un groupe amine NH2, un groupe carboxyle(COOH), un atome d’hydrogène et une chaîne latérale(notée R). Les 20 acides aminés ne diffèrent que par leur chaîne latérale. Dans une protéine, le groupe aminé d’un acide aminé est lié au groupe carboxyle de l'acide aminé suivant(avec élimination d’une molécule d’eau), formant ainsi une liaison peptidique. La mise en commun des électrons(leur délocalisation) entre les atomes d’azote, de carbone et d’oxygène empêche les protéines de tourner librement autour des liaisons peptidiques; chaque unité peptidique définit un plan rigide et les protéines ne peuvent se replier que par rotation autour des liaisons avec le carbone alpha. 4, record 24, French, - carboxyle
Record 24, Spanish
Record 24, Campo(s) temático(s)
- Química
Record 24, Main entry term, Spanish
- carboxilo
1, record 24, Spanish, carboxilo
correct, masculine noun
Record 24, Abbreviations, Spanish
Record 24, Synonyms, Spanish
- grupo carboxilo 2, record 24, Spanish, grupo%20carboxilo
masculine noun
Record 24, Textual support, Spanish
Record 25 - internal organization data 2010-12-14
Record 25, English
Record 25, Subject field(s)
- Chemical Elements and Compounds
Record 25, Main entry term, English
- chlorofluoromethane
1, record 25, English, chlorofluoromethane
correct
Record 25, Abbreviations, English
- CFM 2, record 25, English, CFM
correct
Record 25, Synonyms, English
Record 25, Textual support, English
Record number: 25, Textual support number: 1 CONT
The increase in the manufacture and release into the atmosphere of chlorofluoromethanes, especially CFC13 (F-11) and CF2C12 (F-12) to result in a rapidly increasing amount of C10x in the stratosphere. 3, record 25, English, - chlorofluoromethane
Record 25, French
Record 25, Domaine(s)
- Éléments et composés chimiques
Record 25, Main entry term, French
- chlorofluorométhane
1, record 25, French, chlorofluorom%C3%A9thane
correct, masculine noun
Record 25, Abbreviations, French
- CFM 2, record 25, French, CFM
correct, masculine noun
Record 25, Synonyms, French
- méthane chlorofluoré 3, record 25, French, m%C3%A9thane%20chlorofluor%C3%A9
correct, masculine noun, less frequent
Record 25, Textual support, French
Record number: 25, Textual support number: 1 DEF
Chlorofluorocarbone composé d’un seul atome de carbone ainsi que de chlore et de fluor, ces deux derniers remplaçant partiellement ou entièrement les atomes d’hydrogène. 4, record 25, French, - chlorofluorom%C3%A9thane
Record number: 25, Textual support number: 1 OBS
Les chlorofluorométhanes sont pour la plupart commercialisés sous la marque déposée Fréon par Dupont de Nemours. 4, record 25, French, - chlorofluorom%C3%A9thane
Record number: 25, Textual support number: 2 OBS
Dans la pratique, les CFM comprennent souvent aussi les composés du brome et de l'iode. En réalité, la famille de produits chimiques composée d’un atome de carbone et de tous les halogènes possible devrait être appelée «halométhane». 5, record 25, French, - chlorofluorom%C3%A9thane
Record number: 25, Textual support number: 1 PHR
Cycle de chlorofluorométhane. 6, record 25, French, - chlorofluorom%C3%A9thane
Record 25, Spanish
Record 25, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 25, Main entry term, Spanish
- clorofluorometano
1, record 25, Spanish, clorofluorometano
correct, masculine noun
Record 25, Abbreviations, Spanish
- CFM 1, record 25, Spanish, CFM
correct, masculine noun
Record 25, Synonyms, Spanish
Record 25, Textual support, Spanish
Record number: 25, Textual support number: 1 DEF
Compuesto de carbono que contiene átomos de flúor y/o cloro. 1, record 25, Spanish, - clorofluorometano
Record number: 25, Textual support number: 1 OBS
No es venenoso. Es inerte a temperatura ambiente y licuable bajo presión. Su biodegradación es muy lenta y se va acumulando en la estratosfera. 1, record 25, Spanish, - clorofluorometano
Record 26 - internal organization data 2010-08-26
Record 26, English
Record 26, Subject field(s)
- Chemical Engineering
Record 26, Main entry term, English
- cheletropic reaction 1, record 26, English, cheletropic%20reaction
Record 26, Abbreviations, English
Record 26, Synonyms, English
- chelotropic reaction 1, record 26, English, chelotropic%20reaction
Record 26, Textual support, English
Record 26, French
Record 26, Domaine(s)
- Génie chimique
Record 26, Main entry term, French
- réaction chélotrope
1, record 26, French, r%C3%A9action%20ch%C3%A9lotrope
correct, feminine noun
Record 26, Abbreviations, French
Record 26, Synonyms, French
- réaction chélétrope 1, record 26, French, r%C3%A9action%20ch%C3%A9l%C3%A9trope
correct, feminine noun
Record 26, Textual support, French
Record number: 26, Textual support number: 1 DEF
Cycloaddition au cours de laquelle les atomes doublement liés situés aux extrémités d’un système conjugué se lient à un seul atome d’un réactif en formant deux nouvelles liaisons simples. 1, record 26, French, - r%C3%A9action%20ch%C3%A9lotrope
Record number: 26, Textual support number: 1 OBS
Un exemple d’une telle réaction est l'addition au butadiène du dioxyde de soufre, lequel se lie par l'atome de soufre aux atomes de carbone terminaux du diène. 1, record 26, French, - r%C3%A9action%20ch%C3%A9lotrope
Record number: 26, Textual support number: 2 OBS
réaction chélotrope; réaction chélétrope : termes et définition publiés au Journal officiel de la République française le 8 octobre 2003. 2, record 26, French, - r%C3%A9action%20ch%C3%A9lotrope
Record 26, Spanish
Record 26, Textual support, Spanish
Record 27 - internal organization data 2010-05-18
Record 27, English
Record 27, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 27
Record 27, Main entry term, English
- beta-
1, record 27, English, beta%2D
correct, prefix
Record 27, Abbreviations, English
Record 27, Synonyms, English
Record 27, Textual support, English
Record number: 27, Textual support number: 1 DEF
A prefix having meanings analogous to those of alpha [q.v.] [which] indicates (a) the position of a substituent atom or radical in a compound, (b) the second position in a naphthalene ring, or (c) the attachment of a chemical unit to the side-chain of an aromatic compound. 1, record 27, English, - beta%2D
Record number: 27, Textual support number: 1 OBS
"ß" refers to the Greek letter beta. 2, record 27, English, - beta%2D
Record 27, Key term(s)
- beta
- B
Record 27, French
Record 27, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 27
Record 27, Main entry term, French
- bêta-
1, record 27, French, b%C3%AAta%2D
correct, see observation, prefix
Record 27, Abbreviations, French
Record 27, Synonyms, French
- béta- 1, record 27, French, b%C3%A9ta%2D
prefix
Record 27, Textual support, French
Record number: 27, Textual support number: 1 DEF
1. Préfixe qui sert à désigner l'un de deux ou plusieurs isomères.(Ex. dans la série du naphtalène, ß-naphthol). 2. Préfixe utilisé dans la nomenclature stéréochimique des sucres et des stérols. 3. Préfixe indiquant que deux fonctions sont séparées par un atome de carbone.(L'acétylacétone est une ß-dicétone.) 1, record 27, French, - b%C3%AAta%2D
Record number: 27, Textual support number: 1 OBS
«ß» représente la lettre grecque bêta. «B», ou «bêta», s’écrivent en italiques. 2, record 27, French, - b%C3%AAta%2D
Record number: 27, Textual support number: 2 OBS
[...] les préfixes de position [...] sont imprimés en lettres italiques [et ils] n’interviennent pas dans une classification par ordre alphabétique. 3, record 27, French, - b%C3%AAta%2D
Record 27, Key term(s)
- béta
- B
- bêta
Record 27, Spanish
Record 27, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 27
Record 27, Main entry term, Spanish
- beta
1, record 27, Spanish, beta
correct, feminine noun
Record 27, Abbreviations, Spanish
Record 27, Synonyms, Spanish
Record 27, Textual support, Spanish
Record number: 27, Textual support number: 1 DEF
Letra que, en una serie de varios productos, sirve para designar el que se obtiene después del producto alfa. 1, record 27, Spanish, - beta
Record number: 27, Textual support number: 1 CONT
La letra beta indica también que dos funciones químicas se hallan separadas en una molécula por un átomo de carbono. 1, record 27, Spanish, - beta
Record 28 - internal organization data 2010-04-19
Record 28, English
Record 28, Subject field(s)
- Chemical Elements and Compounds
- Chemistry
Record 28, Main entry term, English
- spiro compound
1, record 28, English, spiro%20compound
correct
Record 28, Abbreviations, English
Record 28, Synonyms, English
Record 28, Textual support, English
Record number: 28, Textual support number: 1 DEF
spiro compounds: Compounds having one atom (usually a quaternary carbon) as the only common member of two rings [as in] spiro[cyclopentane-1,2'-indene] [or in] spiro[4.4]nonane. 2, record 28, English, - spiro%20compound
Record 28, French
Record 28, Domaine(s)
- Éléments et composés chimiques
- Chimie
Record 28, Main entry term, French
- composé spiro
1, record 28, French, compos%C3%A9%20spiro
correct, masculine noun
Record 28, Abbreviations, French
Record 28, Synonyms, French
- composé spiranique 1, record 28, French, compos%C3%A9%20spiranique
correct, masculine noun
Record 28, Textual support, French
Record number: 28, Textual support number: 1 DEF
Composé possédant un atome(généralement un carbone quaternaire) comme seul élément commun à deux cycles. Par exemple : spiro[ cyclopentane-1, 2’-indène [ou] spiro[ 4. 4] nonane. 2, record 28, French, - compos%C3%A9%20spiro
Record 28, Spanish
Record 28, Textual support, Spanish
Record 29 - internal organization data 2007-07-18
Record 29, English
Record 29, Subject field(s)
- Chemical Elements and Compounds
Record 29, Main entry term, English
- organotin
1, record 29, English, organotin
correct
Record 29, Abbreviations, English
Record 29, Synonyms, English
- organo-tin 2, record 29, English, organo%2Dtin
correct
- organotin compound 3, record 29, English, organotin%20compound
correct
- organo-tin compound 4, record 29, English, organo%2Dtin%20compound
correct
Record 29, Textual support, English
Record number: 29, Textual support number: 1 CONT
Organotin chemicals are those compounds containing at least one bond between tin and carbon ... The majority of organotin uses are comprised of five commercial applications: PVC [polyvinyl chloride], heat stabilizers, biocides, catalysts, agrichemicals, and glass coating. 5, record 29, English, - organotin
Record number: 29, Textual support number: 1 OBS
May refer to organostannic compounds, i.e. tin(IV) organic compounds, or to organostannous compounds, i.e. tin(II) organic compounds. 6, record 29, English, - organotin
Record 29, French
Record 29, Domaine(s)
- Éléments et composés chimiques
Record 29, Main entry term, French
- organoétain
1, record 29, French, organo%C3%A9tain
correct, masculine noun
Record 29, Abbreviations, French
Record 29, Synonyms, French
- organo-étain 2, record 29, French, organo%2D%C3%A9tain
correct, masculine noun
- composé d’organoétain 3, record 29, French, compos%C3%A9%20d%26rsquo%3Borgano%C3%A9tain
correct, masculine noun
- composé d’organo-étain 2, record 29, French, compos%C3%A9%20d%26rsquo%3Borgano%2D%C3%A9tain
correct, masculine noun
- composé organoétain 2, record 29, French, compos%C3%A9%20organo%C3%A9tain
masculine noun
- composé organo-étain 4, record 29, French, compos%C3%A9%20organo%2D%C3%A9tain
masculine noun
Record 29, Textual support, French
Record number: 29, Textual support number: 1 CONT
Un organoétain est un composé chimique qui possède au moins une liaison étain(Sn)-carbone(C). Dans tous les organoétains produits industriellement, l'atome d’étain est tétravalent [...] Les organoétains sont donc micro-, di-, tri-ou tétrasubstitués par des groupements d’origine organique [...]. Du fait de la présence des substituants hydrocarbonés, les organétains sont hydrophobes. Leur solubilité dans l'eau est donc faible. Elle dépend du pH, de la salinité et de la température du milieu. 5, record 29, French, - organo%C3%A9tain
Record number: 29, Textual support number: 2 CONT
Au Canada, les composés d’organoétain sont les stabilisants les plus couramment employés dans la production de tuyaux en PVC utilisés pour la distribution d’eau potable et on a détecté leur présence dans l’eau distribuée par ce type de tuyaux. 6, record 29, French, - organo%C3%A9tain
Record number: 29, Textual support number: 3 CONT
Composés d’organoétain comme fongicides protecteurs du bois [...] 7, record 29, French, - organo%C3%A9tain
Record number: 29, Textual support number: 1 OBS
Peut être organostannique, c’-à-d. composé organique d’étain tétravalent, ou d’organoétain(IV), ou encore organostanneux, c’-à-d. composé organique d’étain bivalent, ou organoétain(II). 2, record 29, French, - organo%C3%A9tain
Record 29, Spanish
Record 29, Textual support, Spanish
Record 30 - internal organization data 2004-06-08
Record 30, English
Record 30, Subject field(s)
- Chemistry
Record 30, Main entry term, English
- enolization
1, record 30, English, enolization
correct
Record 30, Abbreviations, English
Record 30, Synonyms, English
Record 30, Textual support, English
Record number: 30, Textual support number: 1 CONT
"Merging Enolization and Bond Construction in the Catalyzed Asymmetric Amination of N-Acyloxazolidinones" [paper written by:] D.A. Evans and S.G. Nelson J. Am. Chem. Soc. 6452 119 1997. 2, record 30, English, - enolization
Record 30, French
Record 30, Domaine(s)
- Chimie
Record 30, Main entry term, French
- énolisation
1, record 30, French, %C3%A9nolisation
correct, feminine noun
Record 30, Abbreviations, French
Record 30, Synonyms, French
Record 30, Textual support, French
Record number: 30, Textual support number: 1 CONT
Nitriles : L'addition du magnésien au nitrile conduit à la formation d’un sel d’immonium. Ce sel d’imine bien qu'insaturé ne réagit pas avec le magnésien car cela impliquerait deux charges négatives sur le même atome d’azote. L'hydrolyse du sel d’immonium le transforme en iminoalcool. En milieu acide ce dernier fournit la cétone plus stable. Cette réaction qui constitue une très bonne méthode de synthèse des cétones possède une limitation dans le cas où l'atome d’hydrogène situé sur l'atome de carbone en a de la fonction nitrile est trop acide. Il y a alors énolisation. 2, record 30, French, - %C3%A9nolisation
Record 30, Spanish
Record 30, Campo(s) temático(s)
- Química
Record 30, Main entry term, Spanish
- enolización
1, record 30, Spanish, enolizaci%C3%B3n
correct, feminine noun
Record 30, Abbreviations, Spanish
Record 30, Synonyms, Spanish
Record 30, Textual support, Spanish
Record number: 30, Textual support number: 1 DEF
Proceso por el que un compuesto carbonílico se convierte en su tautómero enólico. 1, record 30, Spanish, - enolizaci%C3%B3n
Record 31 - internal organization data 2004-05-12
Record 31, English
Record 31, Subject field(s)
- Chemical Elements and Compounds
Record 31, Main entry term, English
- heterocyclic
1, record 31, English, heterocyclic
correct, adjective
Record 31, Abbreviations, English
Record 31, Synonyms, English
Record 31, Textual support, English
Record number: 31, Textual support number: 1 DEF
relating to, characterized by, or being a ring composed of atoms of different elements ... furan and quinoline are ... [heterocyclic] ... 2, record 31, English, - heterocyclic
Record number: 31, Textual support number: 1 OBS
In organic homocyclic compounds the annular atoms are all carbons. 3, record 31, English, - heterocyclic
Record 31, French
Record 31, Domaine(s)
- Éléments et composés chimiques
Record 31, Main entry term, French
- hétérocyclique
1, record 31, French, h%C3%A9t%C3%A9rocyclique
correct, adjective
Record 31, Abbreviations, French
Record 31, Synonyms, French
Record 31, Textual support, French
Record number: 31, Textual support number: 1 DEF
Se dit d’un composé présentant une chaîne fermée par un atome ou un groupe d’atomes autres que le carbone. 2, record 31, French, - h%C3%A9t%C3%A9rocyclique
Record number: 31, Textual support number: 1 CONT
Le furanne, la pyridine sont des composés hétérocycliques. 3, record 31, French, - h%C3%A9t%C3%A9rocyclique
Record 31, Spanish
Record 31, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 31, Main entry term, Spanish
- heterocíclico
1, record 31, Spanish, heteroc%C3%ADclico
correct, adjective
Record 31, Abbreviations, Spanish
Record 31, Synonyms, Spanish
Record 31, Textual support, Spanish
Record number: 31, Textual support number: 1 DEF
[Dícese de la] estructura cíclica o de anillo en la que uno o más de los átomos del anillo es un elemento distinto del carbono. 2, record 31, Spanish, - heteroc%C3%ADclico
Record 32 - internal organization data 2004-04-16
Record 32, English
Record 32, Subject field(s)
- Chemistry
- Phraseology
Record 32, Main entry term, English
- chain
1, record 32, English, chain
correct, noun
Record 32, Abbreviations, English
Record 32, Synonyms, English
Record 32, Textual support, English
Record number: 32, Textual support number: 1 DEF
A structure in which similar atoms are linked by bonds. 2, record 32, English, - chain
Record number: 32, Textual support number: 1 CONT
Proteins consist of covalently linked chains of 20 different kinds of amino acids. 1, record 32, English, - chain
Record 32, French
Record 32, Domaine(s)
- Chimie
- Phraséologie
Record 32, Main entry term, French
- chaîne
1, record 32, French, cha%C3%AEne
correct, feminine noun
Record 32, Abbreviations, French
Record 32, Synonyms, French
- chaîne moléculaire 1, record 32, French, cha%C3%AEne%20mol%C3%A9culaire
correct, feminine noun
Record 32, Textual support, French
Record number: 32, Textual support number: 1 DEF
mode de représentation plane de certaines formules développées. 1, record 32, French, - cha%C3%AEne
Record number: 32, Textual support number: 1 OBS
Les atomes de carbone possèdent [...] la propriété de se lier de façon stable les uns aux autres. Ces assemblages d’atome constituent des chaînes carbonées. Ces chaînes peuvent être ouvertes(série grasse ou acyclique) ou fermées(série cyclique). 2, record 32, French, - cha%C3%AEne
Record number: 32, Textual support number: 1 CONT
Les protéines sont formées de chaînes de 20 types d’aminoacides différents peuvent être liés par covalence. 1, record 32, French, - cha%C3%AEne
Record 32, Spanish
Record 32, Campo(s) temático(s)
- Química
- Fraseología
Record 32, Main entry term, Spanish
- cadena
1, record 32, Spanish, cadena
correct, feminine noun
Record 32, Abbreviations, Spanish
Record 32, Synonyms, Spanish
Record 32, Textual support, Spanish
Record 33 - internal organization data 2003-11-19
Record 33, English
Record 33, Subject field(s)
- Chemistry
Record 33, Main entry term, English
- electrophilicity
1, record 33, English, electrophilicity
correct
Record 33, Abbreviations, English
Record 33, Synonyms, English
- electrophilic power 1, record 33, English, electrophilic%20power
correct, less frequent
Record 33, Textual support, English
Record number: 33, Textual support number: 1 DEF
The relative reactivity of an electrophilic reagent. 1, record 33, English, - electrophilicity
Record number: 33, Textual support number: 1 OBS
Qualitatively, the concept is related to Lewis acidity. However, whereas Lewis acidity is measured by relative equilibrium constants, electrophilicity is measured by relative rate constants for reactions of different electrophilic reagents towards a common substrate (usually involving attack at a carbon atom). 1, record 33, English, - electrophilicity
Record 33, French
Record 33, Domaine(s)
- Chimie
Record 33, Main entry term, French
- électrophilie
1, record 33, French, %C3%A9lectrophilie
correct, feminine noun
Record 33, Abbreviations, French
Record 33, Synonyms, French
- pouvoir électrophile 1, record 33, French, pouvoir%20%C3%A9lectrophile
correct, masculine noun, less frequent
Record 33, Textual support, French
Record number: 33, Textual support number: 1 DEF
Réactivité relative d’un réactif électrophile. 1, record 33, French, - %C3%A9lectrophilie
Record number: 33, Textual support number: 1 OBS
Qualitativement, ce concept est apparenté à celui d’acidité de Lewis. Cependant, alors que l'acidité de Lewis se mesure par des constantes relative d’équilibre, l'électrophilie s’exprime par des constantes relatives de vitesse obtenues à partir de réactions de divers électrophiles face à un même substrat(impliquant généralement une attaque sur un atome de carbone). 1, record 33, French, - %C3%A9lectrophilie
Record 33, Spanish
Record 33, Campo(s) temático(s)
- Química
Record 33, Main entry term, Spanish
- electrofilia
1, record 33, Spanish, electrofilia
correct, feminine noun
Record 33, Abbreviations, Spanish
Record 33, Synonyms, Spanish
- poder electrófilo 1, record 33, Spanish, poder%20electr%C3%B3filo
correct, masculine noun
Record 33, Textual support, Spanish
Record number: 33, Textual support number: 1 DEF
Mayor o menor aptitud de una partícula a entrar en reacción. 1, record 33, Spanish, - electrofilia
Record 34 - external organization data 2003-07-02
Record 34, English
Record 34, Subject field(s)
- Chemistry
- Atomic Physics
- Compartment - Canadian Nuclear Safety Commission
Record 34, Main entry term, English
- atomic weight
1, record 34, English, atomic%20weight
correct
Record 34, Abbreviations, English
- at. wt. 2, record 34, English, at%2E%20wt%2E
correct
Record 34, Synonyms, English
- relative atomic mass 3, record 34, English, relative%20atomic%20mass
correct
- atomic mass 4, record 34, English, atomic%20mass
correct
- relative nuclidic mass 5, record 34, English, relative%20nuclidic%20mass
correct
Record 34, Textual support, English
Record number: 34, Textual support number: 1 DEF
The relative mass of an atom based on a scale in which a specific carbon atom (carbon-12) is assigned a mass value of 12. 2, record 34, English, - atomic%20weight
Record number: 34, Textual support number: 1 CONT
Atomic weight. The nucleus of an atom is made up of neutrons and protons. The total mass of the neutrons and protons along with the electrons gives the mass of the atom. ... Because this value is so small, a new unit of weight, the atomic weight unit (awu), is often used to express the weights of atoms. It is defined as 1/12 the weight of carbon atom. Carbon therefore weighs 12 awu and is the chemists' standard of reference for atomic weights. 6, record 34, English, - atomic%20weight
Record number: 34, Textual support number: 2 CONT
Sometimes hydrogen is assigned an atomic weight of 1 and oxygen an atomic weight of 16, but carbon with a weight of 12 usually is taken as a basis. Every element is assigned an atomic weight. 7, record 34, English, - atomic%20weight
Record 34, French
Record 34, Domaine(s)
- Chimie
- Physique atomique
- Tiroir - Commission canadienne de sûreté nucléaire
Record 34, Main entry term, French
- masse atomique
1, record 34, French, masse%20atomique
correct, feminine noun
Record 34, Abbreviations, French
Record 34, Synonyms, French
- masse nucléidique 2, record 34, French, masse%20nucl%C3%A9idique
correct, feminine noun
- poids atomique 3, record 34, French, poids%20atomique
correct, masculine noun, obsolete
- coefficient atomique 4, record 34, French, coefficient%20atomique
masculine noun
Record 34, Textual support, French
Record number: 34, Textual support number: 1 DEF
Rapport de la masse de l'atome d’un élément au douzième de la masse du carbone 12. 5, record 34, French, - masse%20atomique
Record number: 34, Textual support number: 1 CONT
[La] masse atomique d’un élément [...] a été longtemps définie comme le rapport de la masse de l'atome de cet élément au seizième de la masse de l'atome d’oxygène; ainsi la masse atomique de l'oxygène était 16 [...]. [À l'occasion du] Congrès de l'Union internationale de chimie pure et appliquée(Montréal, 1961) [...] l'atome de carbone de nombre de masse 12 [a] été pris comme nouvelle base des masses atomiques [...] 5, record 34, French, - masse%20atomique
Record number: 34, Textual support number: 1 OBS
[La] Commission des poids atomiques [...] a recommandé d’utiliser la désignation poids atomique pour les éléments qui sont, pour la plupart d’entre eux à l’état naturel, des mélanges de nuclides et de réserver celle de masse atomique pour les nuclides isolés. 4, record 34, French, - masse%20atomique
Record 34, Spanish
Record 34, Campo(s) temático(s)
- Química
- Física atómica
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 34, Main entry term, Spanish
- masa atómica relativa
1, record 34, Spanish, masa%20at%C3%B3mica%20relativa
correct, feminine noun
Record 34, Abbreviations, Spanish
Record 34, Synonyms, Spanish
- masa atómica 2, record 34, Spanish, masa%20at%C3%B3mica
feminine noun
- peso atómico 3, record 34, Spanish, peso%20at%C3%B3mico
avoid, see observation, masculine noun
Record 34, Textual support, Spanish
Record number: 34, Textual support number: 1 DEF
Razón entre la masa media por átomo de la composición nucleídica natural de un elemento y la dozava parte de la masa atómica del nucleido de12C. 1, record 34, Spanish, - masa%20at%C3%B3mica%20relativa
Record number: 34, Textual support number: 1 OBS
Según la fuente SP-95, el término "peso atómico" es impropio. 4, record 34, Spanish, - masa%20at%C3%B3mica%20relativa
Record 35 - internal organization data 2003-02-17
Record 35, English
Record 35, Subject field(s)
- Chemistry
Record 35, Main entry term, English
- hydrogen atom
1, record 35, English, hydrogen%20atom
correct
Record 35, Abbreviations, English
Record 35, Synonyms, English
Record 35, Textual support, English
Record number: 35, Textual support number: 1 CONT
A hydrogen atom consists of one proton and one electron. 1, record 35, English, - hydrogen%20atom
Record 35, French
Record 35, Domaine(s)
- Chimie
Record 35, Main entry term, French
- atome d’hydrogène
1, record 35, French, atome%20d%26rsquo%3Bhydrog%C3%A8ne
correct, masculine noun
Record 35, Abbreviations, French
Record 35, Synonyms, French
Record 35, Textual support, French
Record number: 35, Textual support number: 1 CONT
Un atome est [...] constitué de proton(s) positif(s), de neutron(s) neutre(s), et d’électron(s) négatif(s). Il existe [...] 103 [atomes] connus [...] où le nombre de protons, neutrons et d’électrons varient, mais quel que soit le nombre de proton(ou d’électrons) il sera toujours égal au nombre d’électrons(ou de protons), car tous les atomes dans leur état fondamental sont neutres. Par exemple, l'atome d’hydrogène(de symbole H) possède 1 proton et 1 électron, l'atome de carbone(C), 6 électrons et 6 protons ou encore l'atome d’oxygène(O), 8 électrons et 8 protons et quel que soit leur nombre de neutrons, tous ces atomes sont [...] neutres. 2, record 35, French, - atome%20d%26rsquo%3Bhydrog%C3%A8ne
Record 35, Spanish
Record 35, Textual support, Spanish
Record 36 - internal organization data 2003-02-06
Record 36, English
Record 36, Subject field(s)
- Chemical Elements and Compounds
- Pollutants
- Climate Change
Record 36, Main entry term, English
- halogenated methane
1, record 36, English, halogenated%20methane
correct
Record 36, Abbreviations, English
Record 36, Synonyms, English
- halomethane 2, record 36, English, halomethane
correct
Record 36, Textual support, English
Record number: 36, Textual support number: 1 CONT
The ozone layer is the principal shield preventing harmful short-wave ultraviolet radiation from reaching the surface of the earth. Suggestions that man's activities may be leading to a moderate reduction of the stratospheric ozone layer is of justifiable concern. Several threats such as exhaust emissions from high altitude aircraft and halomethanes diffusing up from the troposphere appear to have a sound theoretical support to serve as a basis of concern. 3, record 36, English, - halogenated%20methane
Record 36, French
Record 36, Domaine(s)
- Éléments et composés chimiques
- Agents de pollution
- Changements climatiques
Record 36, Main entry term, French
- méthane halogéné
1, record 36, French, m%C3%A9thane%20halog%C3%A9n%C3%A9
correct, masculine noun
Record 36, Abbreviations, French
Record 36, Synonyms, French
- halométhane 2, record 36, French, halom%C3%A9thane
correct, masculine noun
Record 36, Textual support, French
Record number: 36, Textual support number: 1 DEF
Chlorofluorocarbone composé d’un seul atome de carbone ainsi que d’atomes d’halogènes, ces derniers remplaçant partiellement ou entièrement les atomes d’hydrogène. 3, record 36, French, - m%C3%A9thane%20halog%C3%A9n%C3%A9
Record number: 36, Textual support number: 1 OBS
Si le composé comprend plus d’un atome de carbone, on parle alors de façon générale d’hydrocarbure halogéné ou, de façon spécifique, si on connaît ce nombre, d’haloéthane, d’haloéthylène, etc., selon le cas. 3, record 36, French, - m%C3%A9thane%20halog%C3%A9n%C3%A9
Record number: 36, Textual support number: 2 OBS
Les halométhanes se distinguent des chlorofluorométhanes; pour les premiers tous les halogènes peuvent remplacer les atomes d’hydrogène, pour les seconds seulement deux halogènes, le chlore et le fluor, peuvent remplacer les atomes hydrogène. Cependant, comme ces deux halogènes sont les plus importants, dans la pratique on confond ces deux familles de substances. 3, record 36, French, - m%C3%A9thane%20halog%C3%A9n%C3%A9
Record number: 36, Textual support number: 3 OBS
[Exemples de méthanes halogénés :] monochlorométhane [...] dichlorométhane [...] trichlorométhane [...] tétrachlorométhane [...] 4, record 36, French, - m%C3%A9thane%20halog%C3%A9n%C3%A9
Record 36, Spanish
Record 36, Textual support, Spanish
Record 37 - internal organization data 2003-01-31
Record 37, English
Record 37, Subject field(s)
- Chemical Elements and Compounds
- Chemistry
Record 37, Main entry term, English
- spiro-fused
1, record 37, English, spiro%2Dfused
correct, adjective
Record 37, Abbreviations, English
Record 37, Synonyms, English
Record 37, Textual support, English
Record number: 37, Textual support number: 1 DEF
Said of a chemical structure presenting one atom (usually a quaternary carbon) as the only member of two rings. 2, record 37, English, - spiro%2Dfused
Record number: 37, Textual support number: 1 CONT
When three or more components are spiro-fused to the same component the ring system is described as a branched spiro-fused ring system. Terminal components have only one spiro atom. 3, record 37, English, - spiro%2Dfused
Record number: 37, Textual support number: 2 CONT
The nomenclature and name spirane were proposed by von Baeyer ... for bicyclic compounds with only one atom common to both rings. When a polycyclic ring system is spiro-fused to another ring or ring system Radulescu ... recognised that each ring system needed to be named separately and, in addition, details of the spiro-fusion must be specified. 4, record 37, English, - spiro%2Dfused
Record 37, Key term(s)
- spiro fused
Record 37, French
Record 37, Domaine(s)
- Éléments et composés chimiques
- Chimie
Record 37, Main entry term, French
- spiro-fusionné
1, record 37, French, spiro%2Dfusionn%C3%A9
correct, adjective
Record 37, Abbreviations, French
Record 37, Synonyms, French
- spiro-condensé 1, record 37, French, spiro%2Dcondens%C3%A9
avoid, adjective
Record 37, Textual support, French
Record number: 37, Textual support number: 1 DEF
Se dit d’une structure chimique qui présente un atome(généralement un carbone quaternaire) commun à deux ou à plusieurs cycles. 1, record 37, French, - spiro%2Dfusionn%C3%A9
Record 37, Spanish
Record 37, Textual support, Spanish
Record 38 - internal organization data 2002-01-15
Record 38, English
Record 38, Subject field(s)
- Chemical Elements and Compounds
Record 38, Main entry term, English
- heteroalkene
1, record 38, English, heteroalkene
correct
Record 38, Abbreviations, English
Record 38, Synonyms, English
Record 38, Textual support, English
Record number: 38, Textual support number: 1 DEF
heteroalkenes: Analogues of alkenes in which a doubly bonded carbon atom is replaced by a heteroatom. 2, record 38, English, - heteroalkene
Record number: 38, Textual support number: 1 OBS
[For example:] H2Si=CH2methylidenesilane (silene less preferred), MeN=CH2N-methylmethanimine. [The letter "N" which precedes the word "methylmethanimine" must be italicized.] 2, record 38, English, - heteroalkene
Record number: 38, Textual support number: 2 OBS
heteroalkene: term often used in the plural ("heteroalkenes"). 3, record 38, English, - heteroalkene
Record 38, Key term(s)
- heteroalkenes
Record 38, French
Record 38, Domaine(s)
- Éléments et composés chimiques
Record 38, Main entry term, French
- hétéroalcène
1, record 38, French, h%C3%A9t%C3%A9roalc%C3%A8ne
correct, masculine noun
Record 38, Abbreviations, French
Record 38, Synonyms, French
Record 38, Textual support, French
Record number: 38, Textual support number: 1 DEF
Analogue d’alcène dans lequel un atome de carbone doublement lié est remplacé par un hétéroatome. 2, record 38, French, - h%C3%A9t%C3%A9roalc%C3%A8ne
Record number: 38, Textual support number: 1 OBS
Par exemple : H2Si=CH2,méthylidènesilane (silène est moins préféré); MeN=CH2,N-méthylméthanimine. [La lettre «N» qui précède le mot «méthylméthanimine» s’écrit en italique.] 2, record 38, French, - h%C3%A9t%C3%A9roalc%C3%A8ne
Record number: 38, Textual support number: 2 OBS
hétéroalcène : terme souvent utilisé au pluriel («hétéroalcènes»). 3, record 38, French, - h%C3%A9t%C3%A9roalc%C3%A8ne
Record 38, Key term(s)
- hétéroalcènes
Record 38, Spanish
Record 38, Textual support, Spanish
Record 39 - internal organization data 2002-01-15
Record 39, English
Record 39, Subject field(s)
- Chemical Elements and Compounds
Record 39, Main entry term, English
- heterocumulene
1, record 39, English, heterocumulene
correct
Record 39, Abbreviations, English
Record 39, Synonyms, English
Record 39, Textual support, English
Record number: 39, Textual support number: 1 DEF
heterocumulenes: Cumulenes in which one or more carbon atoms of the cumulative bond system have been replaced by heteroatoms. 2, record 39, English, - heterocumulene
Record number: 39, Textual support number: 1 OBS
[For example:] O=C=C=C=O, but not CH2=C=O, ketene, nor O=C=O, carbon dioxide, which are heteroallenes. 2, record 39, English, - heterocumulene
Record number: 39, Textual support number: 2 OBS
heterocumulene: term often used in the plural ("heterocumulenes"). 3, record 39, English, - heterocumulene
Record 39, Key term(s)
- heterocumulenes
Record 39, French
Record 39, Domaine(s)
- Éléments et composés chimiques
Record 39, Main entry term, French
- hétérocumulène
1, record 39, French, h%C3%A9t%C3%A9rocumul%C3%A8ne
correct, masculine noun
Record 39, Abbreviations, French
Record 39, Synonyms, French
Record 39, Textual support, French
Record number: 39, Textual support number: 1 DEF
Cumulène dans lequel un(ou plusieurs) atome(s) de carbone du système de liaisons cumulées a(ont) été remplacé(s) par un(ou des) hétéroatome(s). 2, record 39, French, - h%C3%A9t%C3%A9rocumul%C3%A8ne
Record number: 39, Textual support number: 1 OBS
Par exemple : O=C=C=C=O, mais pas CH2=C=O, dioxyde de carbone, qui sont des hétéroallènes. 2, record 39, French, - h%C3%A9t%C3%A9rocumul%C3%A8ne
Record number: 39, Textual support number: 2 OBS
hétérocumulène : terme souvent utilisé au pluriel («hétérocumulènes»). 3, record 39, French, - h%C3%A9t%C3%A9rocumul%C3%A8ne
Record 39, Key term(s)
- hétérocumulènes
Record 39, Spanish
Record 39, Textual support, Spanish
Record 40 - internal organization data 2001-11-15
Record 40, English
Record 40, Subject field(s)
- Chemistry
Record 40, Main entry term, English
- carbyne
1, record 40, English, carbyne
correct
Record 40, Abbreviations, English
Record 40, Synonyms, English
- methylidyne 2, record 40, English, methylidyne
correct
Record 40, Textual support, English
Record number: 40, Textual support number: 1 DEF
Elemental carbon in a triply bonded form. 3, record 40, English, - carbyne
Record number: 40, Textual support number: 2 DEF
carbynes: The neutral species HC: and its derivatives formed by substitution in which a univalent carbon atom is covalently bonded to one group and also bears three nonbonding electrons. 4, record 40, English, - carbyne
Record number: 40, Textual support number: 1 OBS
This term ["carbynes"] carries no implication about spin-pairing. 4, record 40, English, - carbyne
Record 40, French
Record 40, Domaine(s)
- Chimie
Record 40, Main entry term, French
- carbyne
1, record 40, French, carbyne
correct, masculine noun
Record 40, Abbreviations, French
Record 40, Synonyms, French
- méthylidyne 2, record 40, French, m%C3%A9thylidyne
correct, see observation, masculine noun
Record 40, Textual support, French
Record number: 40, Textual support number: 1 DEF
Espèce neutre HC : et ses dérivés de substitution dans lesquels un atome de carbone monovalent est lié de manière covalente à un groupe et porte également trois électrons non liants. 3, record 40, French, - carbyne
Record number: 40, Textual support number: 1 OBS
Le terme [«carbyne»] n’entraîne pas d’implication quant à l’arrangement des spins. 3, record 40, French, - carbyne
Record number: 40, Textual support number: 2 OBS
L’utilisation du terme synonyme méthylidyne, en tant que terme générique, n’est pas recommandée. 4, record 40, French, - carbyne
Record 40, Spanish
Record 40, Textual support, Spanish
Record 41 - internal organization data 2001-08-10
Record 41, English
Record 41, Subject field(s)
- Chemical Elements and Compounds
Record 41, Main entry term, English
- oxo compound
1, record 41, English, oxo%20compound
correct
Record 41, Abbreviations, English
Record 41, Synonyms, English
Record 41, Textual support, English
Record number: 41, Textual support number: 1 DEF
oxo compounds: Compounds containing an oxygen atom, =O, doubly bonded to carbon or another element. 2, record 41, English, - oxo%20compound
Record number: 41, Textual support number: 1 OBS
oxo compounds: The term ... embraces aldehydes, carboxylic acids, ketones, sulfonic acids, amides and esters. Oxo used as an adjective (and thus separated by a space) modifying another class of compound, as in "oxo carboxylic acids", indicates the presence of an oxo substituent at any position. To indicate a double-bonded oxygen that is part of a ketonic structure, the term keto is sometimes used as a prefix, but such use has been abandoned by the IUPAC [International Union of Pure and Applied Chemistry] for naming specific compounds. A traditional use of keto is for indicating oxidation of CHOH to C=O in a parent compound that contains OH groups, such as carbohydrates, e.g. 3-ketoglucose. 2, record 41, English, - oxo%20compound
Record number: 41, Textual support number: 2 OBS
oxo compound: very often used in the plural (oxo compounds), as a collective term. 3, record 41, English, - oxo%20compound
Record 41, Key term(s)
- oxo compounds
Record 41, French
Record 41, Domaine(s)
- Éléments et composés chimiques
Record 41, Main entry term, French
- composé oxo
1, record 41, French, compos%C3%A9%20oxo
correct, masculine noun
Record 41, Abbreviations, French
Record 41, Synonyms, French
Record 41, Textual support, French
Record number: 41, Textual support number: 1 DEF
Composé contenant un atome d’oxygène doublement lié,=O, à un carbone ou à un autre élément. 2, record 41, French, - compos%C3%A9%20oxo
Record number: 41, Textual support number: 1 OBS
L’expression [composé oxo] désigne donc les aldéhydes, les acides carboxyliques, les cétones, les acides sulfoniques ainsi que les amides et les esters. Le terme oxo utilisé comme adjectif (et donc séparé par un espace) modifiant le nom d’un autre classe de composés, comme dans «acides oxo carboxyliques», indique la présence d’un substituant oxo n’importe où sur la molécule. Pour indiquer la présence d’un oxygène doublement lié et faisant partie d’une structure cétonique, on utilise quelquefois le terme céto comme préfixe; toutefois, cet usage a été abandonné par l’UICPA [Union internationale de chimie pure et appliquée] pour nommer des composés particuliers. L’utilisation traditionnelle de ce terme était destinée à indiquer l’oxydation du CHOH en C=O dans un composé fondamental contenant des groupes OH, comme les carbohydrates. Par exemple : 3-cétoglucose. 2, record 41, French, - compos%C3%A9%20oxo
Record number: 41, Textual support number: 2 OBS
composé oxo : terme souvent employé au pluriel («composés oxo»), comme collectif. 3, record 41, French, - compos%C3%A9%20oxo
Record 41, Key term(s)
- composés oxo
Record 41, Spanish
Record 41, Textual support, Spanish
Record 42 - internal organization data 2001-08-07
Record 42, English
Record 42, Subject field(s)
- Chemical Elements and Compounds
Record 42, Main entry term, English
- carbon atom
1, record 42, English, carbon%20atom
correct
Record 42, Abbreviations, English
Record 42, Synonyms, English
- atom of carbon 1, record 42, English, atom%20of%20carbon
correct
Record 42, Textual support, English
Record number: 42, Textual support number: 1 CONT
The carbon atoms in diamond have the tetrahedron geometrical structure. They are held together in a lattice by covalent bonds, which are extremely effective with such small atoms as carbon. 1, record 42, English, - carbon%20atom
Record 42, French
Record 42, Domaine(s)
- Éléments et composés chimiques
Record 42, Main entry term, French
- atome de carbone
1, record 42, French, atome%20de%20carbone
correct, masculine noun
Record 42, Abbreviations, French
Record 42, Synonyms, French
Record 42, Textual support, French
Record number: 42, Textual support number: 1 CONT
Structure des molécules d’hydrocarbures. Selon la manière dont les atomes de carbone sont liés les uns aux autres, on distingue trois types principaux d’hydrocarbures : [...] hydrocarbures saturés [...] hydrocarbures insaturés [...] hydrocarbures aromatiques [...] 2, record 42, French, - atome%20de%20carbone
Record 42, Spanish
Record 42, Textual support, Spanish
Record 43 - internal organization data 2001-06-07
Record 43, English
Record 43, Subject field(s)
- Chemical Elements and Compounds
- Aromatic Hydrocarbons
- Pollutants
Record 43, Main entry term, English
- aromatic cyclic hydrocarbon
1, record 43, English, aromatic%20cyclic%20hydrocarbon
correct
Record 43, Abbreviations, English
Record 43, Synonyms, English
Record 43, Textual support, English
Record number: 43, Textual support number: 1 CONT
Metabolism of the normally stable, unsubstituted aromatic cyclic hydrocarbon, such as ... anthracene does not result from replacement of a nuclear hydrogen but ... involves first an intermediary oxidation to epoxide. 2, record 43, English, - aromatic%20cyclic%20hydrocarbon
Record number: 43, Textual support number: 2 CONT
The fractional approach being employed separates petroleum mixtures into fractions based on carbon content and into sub-fractions comprised of aliphatic (straight or branched chain) hydrocarbons and aromatic (cyclic) hydrocarbons. 3, record 43, English, - aromatic%20cyclic%20hydrocarbon
Record 43, Key term(s)
- aromatic cyclic hydrocarbons
- cyclic aromatic hydrocarbon
- cyclic aromatic hydrocarbons
Record 43, French
Record 43, Domaine(s)
- Éléments et composés chimiques
- Hydrocarbures aromatiques
- Agents de pollution
Record 43, Main entry term, French
- hydrocarbure cyclique aromatique
1, record 43, French, hydrocarbure%20cyclique%20aromatique
correct, masculine noun
Record 43, Abbreviations, French
Record 43, Synonyms, French
- hydrocarbure aromatique cyclique 2, record 43, French, hydrocarbure%20aromatique%20cyclique
masculine noun
- hydrocarbone cyclique aromatique 3, record 43, French, hydrocarbone%20cyclique%20aromatique
avoid, masculine noun
Record 43, Textual support, French
Record number: 43, Textual support number: 1 CONT
[...] la Terre aurait été ensemencée par des molécules organiques arrivées par le moyen de comètes et d’astéroïdes. Ces «briques» auraient [...] été les éléments de base qui ont permis l’apparition de la vie. Ces molécules, dont cinq ont été identifiées, seraient des hydrocarbures cycliques aromatiques. 4, record 43, French, - hydrocarbure%20cyclique%20aromatique
Record number: 43, Textual support number: 2 CONT
Les hydrocarbones et dérivés(HCs) [...] représentent une très grande partie des composés organiques, puisqu'ils sont uniquement composés d’hydrogène et de carbone. Leur diversité provient de la différence du type de liaison entre les atomes(droite, cyclique). Ils peuvent également être saturés ou insaturés. [On trouve] les HCs aliphatiques [qui] ont des chaînes droites ou cycliques, où l'atome de carbone est relié à 3 ou 4 autres atomes(alcanes ou alcène) [et] les HCs aromatiques, basés sur la liaison cyclique du benzène. 3, record 43, French, - hydrocarbure%20cyclique%20aromatique
Record number: 43, Textual support number: 3 CONT
L’étude des carcasses de bélugas morts révèle que les niveaux de contaminants y restent élevés. Plomb, mercure, hydrocarbures aromatiques cycliques et organochlorés sont les polluants les plus fréquents. 2, record 43, French, - hydrocarbure%20cyclique%20aromatique
Record number: 43, Textual support number: 1 OBS
Voir aussi «hydrocarbure aromatique polycyclique». 5, record 43, French, - hydrocarbure%20cyclique%20aromatique
Record 43, Spanish
Record 43, Textual support, Spanish
Record 44 - internal organization data 2001-02-01
Record 44, English
Record 44, Subject field(s)
- Chemistry
Record 44, Main entry term, English
- R group
1, record 44, English, R%20group
correct
Record 44, Abbreviations, English
Record 44, Synonyms, English
Record 44, Textual support, English
Record number: 44, Textual support number: 1 CONT
The R groups consist of saturated or unsaturated carbon chains that commonly contain 11 to 19 carbon atoms. There are some glycerides in butterfat that contain as few as four carbon atoms per R group. The R groups of a particular glyceride are usually not the same, and a given fat or oil is generally a mixture of glycerides. 2, record 44, English, - R%20group
Record number: 44, Textual support number: 1 OBS
Soaps are salts of long-chain, organic carboxylic acids ... R is usually an unbranched saturated or unsaturated alkyl group, but it may possess branches or even ring groups. 3, record 44, English, - R%20group
Record 44, French
Record 44, Domaine(s)
- Chimie
Record 44, Main entry term, French
- groupe R
1, record 44, French, groupe%20R
correct, masculine noun
Record 44, Abbreviations, French
Record 44, Synonyms, French
- chaîne R 2, record 44, French, cha%C3%AEne%20R
avoid, feminine noun
Record 44, Textual support, French
Record number: 44, Textual support number: 1 CONT
La vitesse de la réaction de substitution d’un ligand carbonyle dépend de la nature du groupe R de la phosphine PR3 (R = alkyle, vinyle). 3, record 44, French, - groupe%20R
Record number: 44, Textual support number: 2 CONT
Les dérivés azoïques contiennent le groupement -N=N-. Ceux de structure R-N=N-H sont extrêmement instables et se décomposent rapidement en RH et N2, alors que la stabilité des dérivés disubstitués R-N=N-R est bien supérieure et dépend de la nature du groupe R. 4, record 44, French, - groupe%20R
Record number: 44, Textual support number: 3 CONT
La formule générale d’un ester est :[où] R’ représente une chaîne carbonée linéaire, ramifiée ou cyclique. [...] Remarque : R’ ne peut se réduire à un atome H car ce serait alors un acide et non un ester. Le nom comporte deux termes : le premier avec la terminaison «oate» désigne la chaîne principale provenant de l'acide(numérotée, si nécessaire, à partir de l'atome de carbone lié aux deux atomes d’oxygène) ;le second, avec la terminaison «yle» est le nom du groupe alkyle provenant de l'alcool(cette chaîne R’ est numérotée, si nécessaire, à partir de l'atome de carbone lié à un seul atome d’oxygène). 5, record 44, French, - groupe%20R
Record number: 44, Textual support number: 4 CONT
Les corps gras (huiles et graisses) sont essentiellement constitués [...] par des triglycérides. [...] Les glycérides sont dits mixtes si les trois chaînes R’, R’’ et R’’’ sont différentes, et homogènes si elles sont identiques; contrairement à ce qu’on a longtemps pensé, il s’agit en général de glycérides mixtes. 6, record 44, French, - groupe%20R
Record 44, Spanish
Record 44, Textual support, Spanish
Record 45 - internal organization data 2001-01-18
Record 45, English
Record 45, Subject field(s)
- Chemistry
Record 45, Main entry term, English
- ring
1, record 45, English, ring
correct, noun
Record 45, Abbreviations, English
Record 45, Synonyms, English
Record 45, Textual support, English
Record number: 45, Textual support number: 1 DEF
"ring": A cyclic molecular arrangement whose structure is represented by polygons having four to eight sides ... The principal element ... is usually carbon, as in the hexaganal benzene ring (homocyclic). If an element other than carbon appears in the ring, the compound is called heterocyclic, for example, the pentagonal furane ring. 2, record 45, English, - ring
Record number: 45, Textual support number: 1 OBS
Source WEBIN (Webster) gives "cycle" as a synonym for "ring". However, as shown by the definition of the term "ring" above, "ring" seems to be a specific term compared to "cycle", since it is a type of cyclic molecular arrangement. 3, record 45, English, - ring
Record number: 45, Textual support number: 2 OBS
See also "ring compound", "cyclic compound" and "cycle". 3, record 45, English, - ring
Record 45, French
Record 45, Domaine(s)
- Chimie
Record 45, Main entry term, French
- noyau
1, record 45, French, noyau
correct, see observation, masculine noun
Record 45, Abbreviations, French
Record 45, Synonyms, French
- anneau 2, record 45, French, anneau
masculine noun
Record 45, Textual support, French
Record number: 45, Textual support number: 1 CONT
On appelle noyaux certains squelettes cycliques, comme celui du benzène [...]. Les noyaux sont homo-ou carbocycliques, c'est-à-dire formés exclusivement d’atomes de carbone, ou hétérocycliques, c'est-à-dire qu'ils renferment au moins un atome différent du carbone dans leur cycle. Ils sont généralement hexagonaux ou pentagonaux [...] 3, record 45, French, - noyau
Record number: 45, Textual support number: 1 OBS
«cycle» : chaîne d’atomes fermée, que l’on rencontre surtout parmi les composés du carbone (synonyme : «noyau»). 4, record 45, French, - noyau
Record number: 45, Textual support number: 2 OBS
Le terme "noyau" est donné comme synonyme du terme "cycle" par le Grand dictionnaire Larousse (LAROG et LGRAN). Si l’on se fie au dictionnaire de la chimie de Duval (code DCHIM), cependant, on est porté à penser que le terme «noyau» est un spécifique. Voir l’observation qui suit. 5, record 45, French, - noyau
Record number: 45, Textual support number: 3 OBS
«cycle» : Formule développée fermée sur elle-même, mais pas forcément un noyau. [P. ex. :] cycle benzénique. 6, record 45, French, - noyau
Record 45, Spanish
Record 45, Campo(s) temático(s)
- Química
Record 45, Main entry term, Spanish
- anillo
1, record 45, Spanish, anillo
masculine noun
Record 45, Abbreviations, Spanish
Record 45, Synonyms, Spanish
Record 45, Textual support, Spanish
Record 46 - internal organization data 2001-01-16
Record 46, English
Record 46, Subject field(s)
- Chemical Elements and Compounds
Record 46, Main entry term, English
- alkyl radical
1, record 46, English, alkyl%20radical
correct
Record 46, Abbreviations, English
Record 46, Synonyms, English
Record 46, Textual support, English
Record number: 46, Textual support number: 1 DEF
A carbon-centered radical derived formally by removal of one hydrogen atom from an alkane, e.g. CH3CH2CH2 propyl. 2, record 46, English, - alkyl%20radical
Record number: 46, Textual support number: 1 OBS
An alkyl group or an alkyl radical is structurally similar to an alkane group, where a hydrogen atom is missing. Alkyl radicals are named by replacing the ending "-ane" from the name of the alkane, with the "-yl" suffix. 3, record 46, English, - alkyl%20radical
Record 46, French
Record 46, Domaine(s)
- Éléments et composés chimiques
Record 46, Main entry term, French
- radical alkyle
1, record 46, French, radical%20alkyle
correct, masculine noun
Record 46, Abbreviations, French
Record 46, Synonyms, French
Record 46, Textual support, French
Record number: 46, Textual support number: 1 DEF
Radical carboné résultant formellement de l'enlèvement d’un atome d’hydrogène à un alcane. 1, record 46, French, - radical%20alkyle
Record 46, Spanish
Record 46, Textual support, Spanish
Record 47 - internal organization data 2001-01-10
Record 47, English
Record 47, Subject field(s)
- Chemical Elements and Compounds
Record 47, Main entry term, English
- secondary alcohol
1, record 47, English, secondary%20alcohol
correct
Record 47, Abbreviations, English
Record 47, Synonyms, English
Record 47, Textual support, English
Record number: 47, Textual support number: 1 CONT
In reference to monohydric alcohols, amines, and a few related compounds, this term [primary], together with secondary and tertiary, describes the molecular structure of isomeric or chemically similar individuals. Monohydric alcohols are based on the methanol group, -C-OH, in which three of the bonds [up, down and left side] of the methanol carbon may be attached either to hydrogen atoms or to alkyl groups. ... A secondary alcohol has two alkyl groups and one hydrogen. ... The three types can be readily identified by the number of hydrogen atoms attached to the central (methanol) carbon atom: if it is 2 or more, the alcohol is primary; if 1, it is secondary; and if zero, it is tertiary. For example, CH3CH2OH; is primary; (CH3)CHOH; is secondary; (CH3)3COH is tertiary. 1, record 47, English, - secondary%20alcohol
Record 47, French
Record 47, Domaine(s)
- Éléments et composés chimiques
Record 47, Main entry term, French
- alcool secondaire
1, record 47, French, alcool%20secondaire
correct, masculine noun
Record 47, Abbreviations, French
Record 47, Synonyms, French
Record 47, Textual support, French
Record number: 47, Textual support number: 1 DEF
Nom générique des alcools renfermant le groupement bivalent -CHOH-. 2, record 47, French, - alcool%20secondaire
Record number: 47, Textual support number: 1 CONT
On distingue trois classes d’alcools, selon le nombre d’atomes d’hydrogènes attachés à l'atome de carbone porteur du groupe OH : les alcools tertiaires R3COH, les alcools secondaires R2CHOH et les alcools primaires RCH2OH(auxquels se rattache le méthanol CH3OH). 3, record 47, French, - alcool%20secondaire
Record 47, Spanish
Record 47, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 47, Main entry term, Spanish
- alcohol secundario
1, record 47, Spanish, alcohol%20secundario
masculine noun
Record 47, Abbreviations, Spanish
Record 47, Synonyms, Spanish
Record 47, Textual support, Spanish
Record 48 - internal organization data 1999-10-26
Record 48, English
Record 48, Subject field(s)
- Chemistry
Record 48, Main entry term, English
- configuration
1, record 48, English, configuration
correct
Record 48, Abbreviations, English
Record 48, Synonyms, English
Record 48, Textual support, English
Record number: 48, Textual support number: 1 DEF
The structure of compounds, especially with reference to the spatial relations of atoms in molecules. 1, record 48, English, - configuration
Record 48, French
Record 48, Domaine(s)
- Chimie
Record 48, Main entry term, French
- configuration
1, record 48, French, configuration
correct, feminine noun
Record 48, Abbreviations, French
Record 48, Synonyms, French
Record 48, Textual support, French
Record number: 48, Textual support number: 1 CONT
Le cas le plus simple de configuration stérique autour d’un centre chiral est celui de la configuration d’un atome de carbone C lié à quatre substituants a, b, d et e. Cet atome se trouve au centre d’un tétraèdre, et il existe deux arrangements et deux seulement pour placer a, b, d et e aux sommets du tétraèdre. 1, record 48, French, - configuration
Record 48, Spanish
Record 48, Textual support, Spanish
Record 49 - internal organization data 1998-06-09
Record 49, English
Record 49, Subject field(s)
- Chemistry
Record 49, Main entry term, English
- carbon-centred radical 1, record 49, English, carbon%2Dcentred%20radical
Record 49, Abbreviations, English
Record 49, Synonyms, English
Record 49, Textual support, English
Record 49, Key term(s)
- carbon-centered radical
- carbon centred radical
- carbon centered radical
Record 49, French
Record 49, Domaine(s)
- Chimie
Record 49, Main entry term, French
- radical carboné
1, record 49, French, radical%20carbon%C3%A9
masculine noun
Record 49, Abbreviations, French
Record 49, Synonyms, French
Record 49, Textual support, French
Record number: 49, Textual support number: 1 OBS
Radical situé sur l'atome de carbone. 1, record 49, French, - radical%20carbon%C3%A9
Record 49, Spanish
Record 49, Textual support, Spanish
Record 50 - internal organization data 1998-02-04
Record 50, English
Record 50, Subject field(s)
- Chemistry
Record 50, Main entry term, English
- carbenium ion
1, record 50, English, carbenium%20ion
correct
Record 50, Abbreviations, English
Record 50, Synonyms, English
Record 50, Textual support, English
Record number: 50, Textual support number: 1 DEF
A generic name for carbocations, real or hypothetical, that have at least one important contributing structure containing a tervalent carbon atom with a vacant p-orbital. (The name implies a protonated carbene or a substitution derivative thereof.) 1, record 50, English, - carbenium%20ion
Record 50, French
Record 50, Domaine(s)
- Chimie
Record 50, Main entry term, French
- ion carbénium
1, record 50, French, ion%20carb%C3%A9nium
correct, masculine noun
Record 50, Abbreviations, French
Record 50, Synonyms, French
Record 50, Textual support, French
Record number: 50, Textual support number: 1 DEF
Nom générique des carbocations, réels ou hypothétiques, dont l'une au moins des structures limites importantes présente un atome de carbone trivalent ayant une orbitale p vacante.(Ce nom implique qu'il s’agit de l'acide conjugué d’un carbène ou de l'un de ses dérivés de substitution). 1, record 50, French, - ion%20carb%C3%A9nium
Record 50, Spanish
Record 50, Textual support, Spanish
Record 51 - internal organization data 1998-02-02
Record 51, English
Record 51, Subject field(s)
- Chemistry
Record 51, Main entry term, English
- tetrahedral intermediate
1, record 51, English, tetrahedral%20intermediate
correct
Record 51, Abbreviations, English
Record 51, Synonyms, English
Record 51, Textual support, English
Record number: 51, Textual support number: 1 DEF
A reaction intermediate in which an initially double-bonded carbon atom (typically a carbonyl carbon atom) has been transformed from a trigonal to a tetrahedral arrangement of bonds. For example, aldol in the condensation reaction of acetaldehyde, (but most tetrahedral intermediates have a more fleeting existence). 1, record 51, English, - tetrahedral%20intermediate
Record 51, French
Record 51, Domaine(s)
- Chimie
Record 51, Main entry term, French
- intermédiaire tétraédrique
1, record 51, French, interm%C3%A9diaire%20t%C3%A9tra%C3%A9drique
correct, masculine noun
Record 51, Abbreviations, French
Record 51, Synonyms, French
Record 51, Textual support, French
Record number: 51, Textual support number: 1 DEF
Intermédiaire réactionnel dans lequel l'hybridation d’un atome de carbone, initialement porteur d’une double liaison(l'atome de carbone du groupe carbonyle en est un exemple typique), se trouve changée de sp² en sp³. Par exemple, l'aldol au cours de la réaction de condensation de l'acétaldéhyde(mais la plupart des intermédiaires tétraédriques ont une existence plus brève). 1, record 51, French, - interm%C3%A9diaire%20t%C3%A9tra%C3%A9drique
Record 51, Spanish
Record 51, Textual support, Spanish
Record 52 - internal organization data 1998-01-21
Record 52, English
Record 52, Subject field(s)
- Chemistry
Record 52, Main entry term, English
- homoaromatic
1, record 52, English, homoaromatic
correct
Record 52, Abbreviations, English
Record 52, Synonyms, English
Record 52, Textual support, English
Record number: 52, Textual support number: 1 CONT
Whereas in an aromatic molecule there is continuous overlap of p-orbitals over a cyclic array of atoms, in a homoaromatic molecule there is a formal discontinuity in this overlap resulting from the presence of a single sp3 hybridized atom within the ring; p-orbital overlap apparently bridges this sp3 centre, and features associated with aromaticity are manifest in the properties of the compound. Pronounced homoaromaticity is not normally associated with neutral molecules, but mainly with species bearing a formal electrical charge, e.g., the "homotropylium" cation C8 H9+ ... 1, record 52, English, - homoaromatic
Record number: 52, Textual support number: 1 OBS
In bis-, tris-, (etc.) homoaromatic species, two, three, (etc.) single sp3 centres separately interrupt the [pi]-electron system. 2, record 52, English, - homoaromatic
Record 52, French
Record 52, Domaine(s)
- Chimie
Record 52, Main entry term, French
- homoaromatique
1, record 52, French, homoaromatique
correct
Record 52, Abbreviations, French
Record 52, Synonyms, French
Record 52, Textual support, French
Record number: 52, Textual support number: 1 CONT
Tandis que dans une molécule aromatique il y a recouvrement continu des orbitales p tout au long d’un ensemble cyclique d’atomes, une molécule homoaromatique comporte une discontinuité formelle due à la présence d’un atome d’hybridation sp3 [et d’un seul) au sein du cycle. Apparemment, le recouvrement des orbitales p crée un pont entre les atomes de carbone adjacents au centre sp3 et l'on observe pour le composé des propriétés caractéristiques, associées à l'aromaticité. Normalement, on n’ observe pas d’homoaromaticité prononcée pour des molécules neutres; elle apparaît principalement pour des espèces portant une charge électrique formelle, par exemple pour le cation "homotropylium" C8 H9 [...] 1, record 52, French, - homoaromatique
Record number: 52, Textual support number: 1 OBS
Des espèces bis, tris-, (etc.) homoratomatiques comportent respectivement deux, trois etc. centres sp3 isolés interrompant le système d’électrons-[pi]. 2, record 52, French, - homoaromatique
Record 52, Spanish
Record 52, Textual support, Spanish
Record 53 - internal organization data 1996-11-25
Record 53, English
Record 53, Subject field(s)
- Chemistry
Record 53, Main entry term, English
- carbanion
1, record 53, English, carbanion
correct
Record 53, Abbreviations, English
Record 53, Synonyms, English
Record 53, Textual support, English
Record number: 53, Textual support number: 1 DEF
an organic ion carrying a negative change at a carbon location (as methyl -- or butenyl --). 2, record 53, English, - carbanion
Record 53, French
Record 53, Domaine(s)
- Chimie
Record 53, Main entry term, French
- carbanion
1, record 53, French, carbanion
correct, masculine noun
Record 53, Abbreviations, French
Record 53, Synonyms, French
Record 53, Textual support, French
Record number: 53, Textual support number: 1 CONT
Les carbanions sont des anions du carbone. Ils se forment par l'enlèvement d’un groupe lié à un atome de carbone d’une molécule normale sans ses électrons de liaison. 2, record 53, French, - carbanion
Record 53, Spanish
Record 53, Textual support, Spanish
Record 54 - internal organization data 1996-11-25
Record 54, English
Record 54, Subject field(s)
- Atomic Physics
- Chemistry
Record 54, Main entry term, English
- carbocation
1, record 54, English, carbocation
correct
Record 54, Abbreviations, English
Record 54, Synonyms, English
- carbo-cation 2, record 54, English, carbo%2Dcation
correct
Record 54, Textual support, English
Record number: 54, Textual support number: 1 DEF
A positively charged ion whose charge resides, at least in part, on a carbon atom or group of carbon atoms. 3, record 54, English, - carbocation
Record 54, French
Record 54, Domaine(s)
- Physique atomique
- Chimie
Record 54, Main entry term, French
- carbocation
1, record 54, French, carbocation
correct, masculine noun
Record 54, Abbreviations, French
Record 54, Synonyms, French
Record 54, Textual support, French
Record number: 54, Textual support number: 1 DEF
Ion monovalent positif dont la charge est portée par un atome de C(carbone). 2, record 54, French, - carbocation
Record number: 54, Textual support number: 1 CONT
Il y a d’abord formation d’un carbocation classique résultant de la déshydratation, par ouverture du cycle propanique d’un côté ou de l’autre. 2, record 54, French, - carbocation
Record number: 54, Textual support number: 1 OBS
Carbanion, formé à partir de "carb(one)" et d’"anion" existe aussi. 2, record 54, French, - carbocation
Record number: 54, Textual support number: 2 OBS
Carbocation est un terme général englobant les ions carbénium, tous les types d’ions carbonium, les cations vinyliques, etc. Le nom des carbocations peut être formé en ajoutant le mot «cation» au nom du «radical» correspondant. De tels noms n’impliquent aucune précision sur la structure (par exemple, si les atomes de carbone sont tri- ou pentacoordinés). 3, record 54, French, - carbocation
Record 54, Spanish
Record 54, Textual support, Spanish
Record 55 - internal organization data 1996-11-21
Record 55, English
Record 55, Subject field(s)
- Chemistry
Record 55, Main entry term, English
- bridged carbocation
1, record 55, English, bridged%20carbocation
correct
Record 55, Abbreviations, English
Record 55, Synonyms, English
Record 55, Textual support, English
Record number: 55, Textual support number: 1 DEF
A carbocation (real or hypothetical) in which there are two (or more) carbon atoms that could in alternative Lewis formulae be designated as carbenium centres but which is instead represented by a structure in which a group (a hydrogen atom or a hydrocarbon residue, possibly with substituents in non-involved positions) bridges these potential carbenium centres. The bridging group thereby delocalizes the cationic charge. 1, record 55, English, - bridged%20carbocation
Record 55, French
Record 55, Domaine(s)
- Chimie
Record 55, Main entry term, French
- carbocation ponté
1, record 55, French, carbocation%20pont%C3%A9
correct, masculine noun
Record 55, Abbreviations, French
Record 55, Synonyms, French
Record 55, Textual support, French
Record number: 55, Textual support number: 1 DEF
Carbocation, réel ou hypothétique, ayant deux ou plusieurs atomes de carbone qui seraient appelés centres carbénium si le carbocation était décrit par deux ou plusieurs formules de Lewis, mais qui, au contraire, est représenté par une structure dans laquelle un groupe(un atome d’hydrogène ou un résidu hydrocarboné portant éventuellement des substituants dans des positions autres que celle de l'atome pont) agit comme pont entre ces divers centres carbénium potentiels. Le groupe en pont délocalise donc la charge positive. 1, record 55, French, - carbocation%20pont%C3%A9
Record number: 55, Textual support number: 1 OBS
On peut distinguer les «carbocations pontés ayant un nombre suffisant d’électrons» des «carbocations pontés déficients en électrons». Pour les premiers, on peut citer à titre d’exemples les ions pontés [...] dont le nom trivial est «ion phénonium»; ils sont classés sans ambiguïtés parmi les ions carbénium. Par contre, ceux de la deuxième catégorie impliquent nécessairement des liaisons à trois centres; [...] 1, record 55, French, - carbocation%20pont%C3%A9
Record 55, Spanish
Record 55, Textual support, Spanish
Record 56 - internal organization data 1996-10-11
Record 56, English
Record 56, Subject field(s)
- Chemistry
Record 56, Main entry term, English
- apo-
1, record 56, English, apo%2D
correct
Record 56, Abbreviations, English
Record 56, Synonyms, English
Record 56, Textual support, English
Record number: 56, Textual support number: 1 DEF
In carotenoid nomenclature, an unitalicized prefix, preceded by a locant, used to indicate that all of the molecule beyond the carbon atom corresponding to that locant has been replaced by hydrogen atoms. 2, record 56, English, - apo%2D
Record 56, French
Record 56, Domaine(s)
- Chimie
Record 56, Main entry term, French
- apo-
1, record 56, French, apo%2D
correct
Record 56, Abbreviations, French
Record 56, Synonyms, French
Record 56, Textual support, French
Record number: 56, Textual support number: 1 DEF
Dans la nomenclature des caroténoïdes, un préfixe qui n’ est pas mis en italique, précédé d’un indice et utilisé pour indiquer que toute la partie de la molécule après l'atome de carbone correspondant à l'indice a été remplacé par des atomes d’hydrogène. 1, record 56, French, - apo%2D
Record 56, Spanish
Record 56, Textual support, Spanish
Record 57 - internal organization data 1993-11-16
Record 57, English
Record 57, Subject field(s)
- Biochemistry
Record 57, Main entry term, English
- chiral compound
1, record 57, English, chiral%20compound
correct
Record 57, Abbreviations, English
Record 57, Synonyms, English
Record 57, Textual support, English
Record number: 57, Textual support number: 1 CONT
Because compounds with asymmetric carbon atoms can be regarded as occurring in left- and righthanded forms, they are called chiral compounds (Greek, chiros, "hand"). Correspondingly, the asymmetric atom or center of chiral compounds is called the chiral atom or center. 1, record 57, English, - chiral%20compound
Record 57, French
Record 57, Domaine(s)
- Biochimie
Record 57, Main entry term, French
- composé chiral
1, record 57, French, compos%C3%A9%20chiral
correct, masculine noun
Record 57, Abbreviations, French
Record 57, Synonyms, French
Record 57, Textual support, French
Record number: 57, Textual support number: 1 CONT
Les composés contenant un carbone asymétrique existent sous deux formes droite et gauche; ils ont donc été appelés des composés chiraux(en grec chiros signifie la main) et l'atome asymétrique ou centre du composé chiral a donc été appelé atome chiral ou centre chiral. 1, record 57, French, - compos%C3%A9%20chiral
Record 57, Spanish
Record 57, Textual support, Spanish
Record 58 - internal organization data 1993-11-16
Record 58, English
Record 58, Subject field(s)
- Biochemistry
Record 58, Main entry term, English
- equimolar mixture
1, record 58, English, equimolar%20mixture
correct
Record 58, Abbreviations, English
Record 58, Synonyms, English
Record 58, Textual support, English
Record number: 58, Textual support number: 1 CONT
... when the organic chemist in the laboratory synthesizes an organic compound in which there is an asymmetric carbon atom, the ordinary, nonbiological reactions used form the two possible chiral forms at an equal rate, leading to an equimola 1, record 58, English, - equimolar%20mixture
Record 58, French
Record 58, Domaine(s)
- Biochimie
Record 58, Main entry term, French
- mélange équimolaire
1, record 58, French, m%C3%A9lange%20%C3%A9quimolaire
correct, masculine noun
Record 58, Abbreviations, French
Record 58, Synonyms, French
Record 58, Textual support, French
Record number: 58, Textual support number: 1 CONT
[...] quand un chimiste organicien dans un laboratoire synthétise un composé organique dans lequel existe un atome de carbone asymétrique, les réactions ordinaires, non biologiques utilisées donnent à une vitesse identique les deux formes chirales, ce qui conduit à un mélange équimolaire. 1, record 58, French, - m%C3%A9lange%20%C3%A9quimolaire
Record 58, Spanish
Record 58, Textual support, Spanish
Record 59 - internal organization data 1993-11-16
Record 59, English
Record 59, Subject field(s)
- Biochemistry
Record 59, Main entry term, English
- singly bonded
1, record 59, English, singly%20bonded
correct
Record 59, Abbreviations, English
Record 59, Synonyms, English
Record 59, Textual support, English
Record number: 59, Textual support number: 1 CONT
Whenever there are four different atoms or functional groups singly bonded to a given carbon atom in an organic molecule, the carbon atom is said to be asymmetric since it can exist in two isomeric forms, called enantiomers, which have different configurations in space. 1, record 59, English, - singly%20bonded
Record 59, French
Record 59, Domaine(s)
- Biochimie
Record 59, Main entry term, French
- liés par une liaison simple
1, record 59, French, li%C3%A9s%20par%20une%20liaison%20simple
correct
Record 59, Abbreviations, French
Record 59, Synonyms, French
Record 59, Textual support, French
Record number: 59, Textual support number: 1 CONT
Chaque fois qu'existent 4 atomes ou groupements fonctionnels différents liés par une liaison simple à un atome de carbone donné dans une molécule organique, l'atome de carbone est dit asymétrique puisqu'il peut exister sous deux formes isomères, appelées énantiomères, qui possèdent des configurations différentes dans l'espace. 1, record 59, French, - li%C3%A9s%20par%20une%20liaison%20simple
Record 59, Spanish
Record 59, Textual support, Spanish
Record 60 - internal organization data 1993-03-01
Record 60, English
Record 60, Subject field(s)
- Chemistry
Record 60, Main entry term, English
Record 60, Abbreviations, English
Record 60, Synonyms, English
Record 60, Textual support, English
Record 60, French
Record 60, Domaine(s)
- Chimie
Record 60, Main entry term, French
- en trans 1, record 60, French, en%20trans
Record 60, Abbreviations, French
Record 60, Synonyms, French
Record 60, Textual support, French
Record number: 60, Textual support number: 1 OBS
Le cholestane est un hydrocarbure saturé de formule C27H48. La fixation de la chaîne latérale en C fait apparaître deux carbones 17-20 centres d’asymétrie. La position de l'atome d’Hydrogène du Carbone 17 par rapport au méthyle du Carbone 20 est en trans pour le cholestane((figure 3). ANA-V7-n3-53 : 228) 1, record 60, French, - en%20trans
Record 60, Spanish
Record 60, Textual support, Spanish
Record 61 - internal organization data 1992-05-13
Record 61, English
Record 61, Subject field(s)
- Chemistry
Record 61, Main entry term, English
- carbon-12
1, record 61, English, carbon%2D12
correct
Record 61, Abbreviations, English
Record 61, Synonyms, English
Record 61, Textual support, English
Record number: 61, Textual support number: 1 OBS
symbol: 12C (the number is a superscript). 2, record 61, English, - carbon%2D12
Record 61, French
Record 61, Domaine(s)
- Chimie
Record 61, Main entry term, French
- carbone 12
1, record 61, French, carbone%2012
masculine noun
Record 61, Abbreviations, French
Record 61, Synonyms, French
Record 61, Textual support, French
Record number: 61, Textual support number: 1 CONT
[...] plusieurs molécules différentes mais de même masse, comme l'hydrure de carbone, composées d’un atome de carbone 12 lié à deux atomes d’hydrogène, ne peuvent être distinguées du carbone 14, par la spectrométrie de masse classique. 1, record 61, French, - carbone%2012
Record 61, Spanish
Record 61, Textual support, Spanish
Record 62 - internal organization data 1991-01-17
Record 62, English
Record 62, Subject field(s)
- Chemistry
Record 62, Main entry term, English
- anomeric effect 1, record 62, English, anomeric%20effect
Record 62, Abbreviations, English
Record 62, Synonyms, English
Record 62, Textual support, English
Record number: 62, Textual support number: 1 CONT
Anomeric effect is now recognized as one of several related stereo-electronic phenomena explaining many organic reactions. 1, record 62, English, - anomeric%20effect
Record 62, French
Record 62, Domaine(s)
- Chimie
Record 62, Main entry term, French
- effet anomérique
1, record 62, French, effet%20anom%C3%A9rique
proposal, masculine noun
Record 62, Abbreviations, French
Record 62, Synonyms, French
Record 62, Textual support, French
Record number: 62, Textual support number: 1 OBS
Anomérique: Qui se rapporte à un anomère. 2, record 62, French, - effet%20anom%C3%A9rique
Record number: 62, Textual support number: 2 OBS
Anomère : Nom donné aux stéréo-isomères des formes cycliques des sucres(oses et osides), pour lesquels la stéréo-isomérie provient de l'atome de carbone doublement lié à l'oxygène dans la structure non cyclique de ces composés. 2, record 62, French, - effet%20anom%C3%A9rique
Record 62, Spanish
Record 62, Textual support, Spanish
Record 63 - internal organization data 1990-04-09
Record 63, English
Record 63, Subject field(s)
- Chemical Engineering
Record 63, Main entry term, English
- hydroformylation 1, record 63, English, hydroformylation
Record 63, Abbreviations, English
Record 63, Synonyms, English
Record 63, Textual support, English
Record 63, French
Record 63, Domaine(s)
- Génie chimique
Record 63, Main entry term, French
- hydroformylation
1, record 63, French, hydroformylation
correct, feminine noun
Record 63, Abbreviations, French
Record 63, Synonyms, French
Record 63, Textual support, French
Record number: 63, Textual support number: 1 DEF
Fixation d’un atome d’hydrogène et d’un groupe formyl sur la molécule d’un composé comportant une liaison double par réaction avec l'hydrogène et le monoxyde de carbone. 1, record 63, French, - hydroformylation
Record 63, Spanish
Record 63, Campo(s) temático(s)
- Ingenieria química
Record 63, Main entry term, Spanish
- hidroformilación 1, record 63, Spanish, hidroformilaci%C3%B3n
Record 63, Abbreviations, Spanish
Record 63, Synonyms, Spanish
Record 63, Textual support, Spanish
Record 64 - internal organization data 1986-03-04
Record 64, English
Record 64, Subject field(s)
- Chemical Elements and Compounds
Record 64, Main entry term, English
- primary carbon atom
1, record 64, English, primary%20carbon%20atom
correct
Record 64, Abbreviations, English
Record 64, Synonyms, English
Record 64, Textual support, English
Record number: 64, Textual support number: 1 DEF
Carbon atoms singly bonded to only one other carbon atom .... 1, record 64, English, - primary%20carbon%20atom
Record 64, French
Record 64, Domaine(s)
- Éléments et composés chimiques
Record 64, Main entry term, French
- carbone primaire
1, record 64, French, carbone%20primaire
correct, masculine noun
Record 64, Abbreviations, French
Record 64, Synonyms, French
Record 64, Textual support, French
Record number: 64, Textual support number: 1 CONT
On nomme carbone primaire, un carbone uni par une liaison simple à un autre carbone (...) 2, record 64, French, - carbone%20primaire
Record number: 64, Textual support number: 2 CONT
On peut (...) définir la notion de classe d’un carbone : un carbone est primaire, secondaire, tertiaire ou quaternaire (marqué respectivement I, II, III ou IV) selon qu’il est lié à un, deux, trois ou quatre autres atomes de carbone. 3, record 64, French, - carbone%20primaire
Record 64, Key term(s)
- atome de carbone primaire
Record 64, Spanish
Record 64, Textual support, Spanish
Record 65 - internal organization data 1986-03-04
Record 65, English
Record 65, Subject field(s)
- Chemical Elements and Compounds
Record 65, Main entry term, English
- quaternary carbon atom
1, record 65, English, quaternary%20carbon%20atom
correct
Record 65, Abbreviations, English
Record 65, Synonyms, English
Record 65, Textual support, English
Record number: 65, Textual support number: 1 DEF
Carbon atoms ... bonded to four other carbon atoms .... 1, record 65, English, - quaternary%20carbon%20atom
Record 65, French
Record 65, Domaine(s)
- Éléments et composés chimiques
Record 65, Main entry term, French
- carbone quaternaire
1, record 65, French, carbone%20quaternaire
correct, masculine noun
Record 65, Abbreviations, French
Record 65, Synonyms, French
Record 65, Textual support, French
Record number: 65, Textual support number: 1 CONT
On peut (...) définir la notion de classe d’un carbone : un carbone est primaire, secondaire, tertiaire ou quaternaire (marqué respectivement I, II, III ou IV) selon qu’il est lié à un, deux, trois ou quatre atomes de carbone. 1, record 65, French, - carbone%20quaternaire
Record 65, Key term(s)
- atome de carbone quaternaire
Record 65, Spanish
Record 65, Textual support, Spanish
Record 66 - internal organization data 1986-03-04
Record 66, English
Record 66, Subject field(s)
- Chemical Elements and Compounds
Record 66, Main entry term, English
- secondary carbon atom
1, record 66, English, secondary%20carbon%20atom
correct
Record 66, Abbreviations, English
Record 66, Synonyms, English
Record 66, Textual support, English
Record number: 66, Textual support number: 1 DEF
Carbon atoms ... singly bonded to two other carbons .... 1, record 66, English, - secondary%20carbon%20atom
Record 66, French
Record 66, Domaine(s)
- Éléments et composés chimiques
Record 66, Main entry term, French
- carbone secondaire
1, record 66, French, carbone%20secondaire
correct, masculine noun
Record 66, Abbreviations, French
Record 66, Synonyms, French
Record 66, Textual support, French
Record number: 66, Textual support number: 1 CONT
On nomme (...) carbone secondaire un carbone lié à deux autres carbones (...) 2, record 66, French, - carbone%20secondaire
Record number: 66, Textual support number: 2 CONT
On peut (...) définir la notion de classe d’un carbone : un carbone est primaire, secondaire, tertiaire ou quaternaire (marqué respectivement I, II, III ou IV) selon qu’il est lié à un, deux, trois ou quatre autres atomes de carbone. 3, record 66, French, - carbone%20secondaire
Record 66, Key term(s)
- atome de carbone secondaire
Record 66, Spanish
Record 66, Textual support, Spanish
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