TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
AROMATIC RING [18 records]
Record 1 - internal organization data 2013-09-03
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- sigma adduct
1, record 1, English, sigma%20adduct
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- sigma complex 1, record 1, English, sigma%20complex
correct
Record 1, Textual support, English
Record number: 1, 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 1, English, - sigma%20adduct
Record number: 1, Textual support number: 1 OBS
The word "sigma" must be replaced by the corresponding Greek letter. 2, record 1, English, - sigma%20adduct
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- adduit-sigma
1, record 1, French, adduit%2Dsigma
correct, see observation, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- complexe-sigma 1, record 1, French, complexe%2Dsigma
correct, masculine noun
Record 1, Textual support, French
Record number: 1, 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 1, French, - adduit%2Dsigma
Record number: 1, 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 1, French, - adduit%2Dsigma
Record number: 1, Textual support number: 2 OBS
Le mot «sigma» doit être remplacé par la lettre grecque correspondante. 2, record 1, French, - adduit%2Dsigma
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2013-09-03
Record 2, English
Record 2, Subject field(s)
- Chemistry
Record 2, Main entry term, English
- rho-value
1, record 2, English, rho%2Dvalue
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A measure of the susceptibility to the influence of substituent groups on the rate constant or equilibrium constant of a particular organic reaction involving a family of related substrates. Defined by Hammett for the effect of ring substituents in meta-and para-positions on aromatic side-chain reactions... 1, record 2, English, - rho%2Dvalue
Record number: 2, Textual support number: 1 OBS
The word "rho" must be replaced by the corresponding Greek letter. 2, record 2, English, - rho%2Dvalue
Record 2, French
Record 2, Domaine(s)
- Chimie
Record 2, Main entry term, French
- constante de rho
1, record 2, French, constante%20de%20rho
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- paramètre rho 1, record 2, French, param%C3%A8tre%20rho
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Mesure de la sensibilité de la constante de vitesse, ou de la constante d'équilibre, à l'influence des substituants pour une réaction organique particulière impliquant une famille de substrats organiques. Elle a été définie par Hammett, à partir de l'équation empirique [rho-sigma] de forme générale : log [kX/kH] = [[rho][sigma]X] pour exprimer l'effet d'un substituant en position méta ou para d'un cycle sur les réactions de la chaîne latérale d'un système aromatique. Dans cette équation, [sigma]X est une constante caractéristique du substituant X et de sa position dans la molécule du réactif. 1, record 2, French, - constante%20de%20rho
Record number: 2, Textual support number: 1 OBS
Plus généralement, lorsqu'on utilise différents ensembles de paramètres [sigma] modifiés (annotés par des indices et exposants appropriés) dans des corrélations empiriques [rho-sigma], les paramètres [rho] servent à caractériser la sensibilité à n'importe quel effet de substituant pour différentes familles de composés, aromatiques ou non, impliqués dans diverses réactions. La valeur de [rho] est positive quand les substituants de constante [sigma] positive accélèrent la réaction ou augmentent sa constante d'équilibre. Puisque, par définition, les substituants qui augmentent l'acidité de l'acide benzoïque ont une valeur [sigma] positive, ces substituants sont considérés comme des attracteurs d'électrons du cycle aromatique. Par conséquent, une réaction qui présente une valeur positive de [rho] comporte un état de transition (ou un produit réactionnel) dont la différence d'énergie avec les réactifs décroît quand la densité électronique au centre réactionnel du substrat diminue. 1, record 2, French, - constante%20de%20rho
Record number: 2, Textual support number: 2 OBS
Les mots «rho» et «sigma» doivent être remplacés par les lettres grecques correspondantes. 2, record 2, French, - constante%20de%20rho
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2012-07-18
Record 3, English
Record 3, Subject field(s)
- Chemical Elements and Compounds
Record 3, Main entry term, English
- alicyclic compound
1, record 3, English, alicyclic%20compound
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- alycyclic 2, record 3, English, alycyclic
correct, noun
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
alicyclic compounds : aliphatic compounds having a carbocyclic ring structure which may be saturated or unsaturated, but may not be a benzenoid or other aromatic system. 3, record 3, English, - alicyclic%20compound
Record number: 3, Textual support number: 1 OBS
alicyclic compound; alicyclic: usually used in the plural, as collective terms (alicyclic compounds; alicyclics). 4, record 3, English, - alicyclic%20compound
Record 3, Key term(s)
- alicyclic compounds
- alicyclics
Record 3, French
Record 3, Domaine(s)
- Éléments et composés chimiques
Record 3, Main entry term, French
- composé alicyclique
1, record 3, French, compos%C3%A9%20alicyclique
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Composé aliphatique comportant une structure carbocyclique qui peut être saturée ou insaturée, mais qui ne peut être un système aromatique benzénoïde ou autre. 2, record 3, French, - compos%C3%A9%20alicyclique
Record number: 3, Textual support number: 1 OBS
composé alicyclique : terme utilisé la plupart du temps au pluriel (composés alicycliques), comme collectif. 3, record 3, French, - compos%C3%A9%20alicyclique
Record 3, Key term(s)
- composés alicycliques
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 3, Main entry term, Spanish
- compuesto alicíclico
1, record 3, Spanish, compuesto%20alic%C3%ADclico
correct, masculine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Compuesto orgánico derivado de un hidrocarburo alicíclico. 1, record 3, Spanish, - compuesto%20alic%C3%ADclico
Record 4 - internal organization data 2012-05-04
Record 4, English
Record 4, Subject field(s)
- Research and Development (Petroleum Tech.)
- Chemical Engineering
Record 4, Main entry term, English
- perstraction
1, record 4, English, perstraction
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Abstract of the disclosure. Membrane separation under perstraction conditions of a lube oil distillate is disclosed which produces a retentate rich in non-aromatics hydrocarbons and alkyl aromatic and a permeate rich in multi-ring aromatics. The recovered retentate is similar to a solvent extracted raffinate but possesses a higher concentration of alkyl-single ring aromatics. The membrane separation process is highly selective for removing multi-ring aromatics from the lube distillate. 1, record 4, English, - perstraction
Record 4, French
Record 4, Domaine(s)
- Recherche et développement (Technol. pétrol.)
- Génie chimique
Record 4, Main entry term, French
- perstraction
1, record 4, French, perstraction
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Technique chimique permettant d'entraîner les substances retenues dans une membrane perméable en les récupérant dans un solvant choisi. 1, record 4, French, - perstraction
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2011-08-23
Record 5, English
Record 5, Subject field(s)
- Chemical Elements and Compounds
Record 5, Main entry term, English
- aromatic acid
1, record 5, English, aromatic%20acid
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- aromatic organic acid 2, record 5, English, aromatic%20organic%20acid
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
An acid of the aromatic group of compounds(aromatic compounds), characterized by the presence of at least one benzene ring. 3, record 5, English, - aromatic%20acid
Record number: 5, Textual support number: 1 CONT
Aromatic acids, such as benzoic and toluic, are frequently used as sources of hydrocarbons ... 4, record 5, English, - aromatic%20acid
Record number: 5, Textual support number: 1 OBS
"aromatic" is said of compounds often used in perfumery and in the fragrance industry to describe essential oils which are not aromatic in the chemical sense. 5, record 5, English, - aromatic%20acid
Record 5, French
Record 5, Domaine(s)
- Éléments et composés chimiques
Record 5, Main entry term, French
- acide aromatique
1, record 5, French, acide%20aromatique
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- acide organique aromatique 2, record 5, French, acide%20organique%20aromatique
correct, masculine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
acides aromatiques : Composés chimiques organiques dont la molécule contient un ou plusieurs groupes carboxyles [...] 3, record 5, French, - acide%20aromatique
Record number: 5, Textual support number: 1 CONT
Acides aromatiques. Les acides de cette série, dont le carboxyle est fixé directement sur le noyau, ont des préparations et des propriétés particulières décrites à propos de l'acide benzoïque. Dans le groupe du benzène, les corps les plus importants sont, outre l'acide benzoïque, les acides phénylacétique et cinnamique (éthylénique). 4, record 5, French, - acide%20aromatique
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 5, Main entry term, Spanish
- ácido aromático
1, record 5, Spanish, %C3%A1cido%20arom%C3%A1tico
correct, masculine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2011-07-05
Record 6, English
Record 6, Subject field(s)
- Chemistry
Record 6, Main entry term, English
- ring substituted 1, record 6, English, ring%20substituted
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
ring substituted aromatic chloride 1, record 6, English, - ring%20substituted
Record number: 6, Textual support number: 1 OBS
aromatic compounds have one or more rings of six carbons. Substitution of groups of atoms for one or more hydrogens on the basic benzene ring gives phenols, amines, acids, and other derivatives. 2, record 6, English, - ring%20substituted
Record 6, French
Record 6, Domaine(s)
- Chimie
Record 6, Main entry term, French
- de substitution
1, record 6, French, de%20substitution
correct
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Obtenu par remplacement d'atomes ou de radicaux, sans changement de constitution d'une combinaison. 2, record 6, French, - de%20substitution
Record number: 6, Textual support number: 1 CONT
Composé ou dérivé de substitution. 1, record 6, French, - de%20substitution
Record number: 6, Textual support number: 1 OBS
Les dérivés halogénés aromatiques résultent de la substitution, par un halogène, d'un ou de plusieurs atomes d'hydrogène nucléaires d'hydrocarbures aromatiques comme le benzène le naphtalène [...] 3, record 6, French, - de%20substitution
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2011-03-15
Record 7, English
Record 7, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 7
Record 7, Main entry term, English
- benzyne
1, record 7, English, benzyne
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
[A] chemical species whose structure consists of an aromatic ring in which four carbon atoms are bonded to hydrogen atoms and two adjacent carbon atoms lack substitutents; a member of a class of compounds known as arynes. 2, record 7, English, - benzyne
Record number: 7, Textual support number: 1 OBS
Chemical formula: C6H4 3, record 7, English, - benzyne
Record 7, French
Record 7, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 7
Record 7, Main entry term, French
- benzyne
1, record 7, French, benzyne
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
1,2-didéhydrobenzène (l'aryne dérivé du benzène) et ses dérivés issus de substitution. 2, record 7, French, - benzyne
Record number: 7, Textual support number: 1 OBS
Les termes m- et p- benzyne sont occasionnellement utilisés (d'une façon erronée) respectivement pour les 1,3- et 1,4-didéhydrobenzènes qui devraient se nommer respectivement benzène-1,3-diyle et benzène-1,4-diyle d'après RNRI [Revised Nomenclature for Radicals, Ions, Radical Ions and Related Species] 2, record 7, French, - benzyne
Record number: 7, Textual support number: 2 OBS
Formule chimique : C6H4 3, record 7, French, - benzyne
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2011-03-01
Record 8, English
Record 8, Subject field(s)
- Chemical Elements and Compounds
- Chemistry
Record 8, Main entry term, English
- basic amine
1, record 8, English, basic%20amine
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
The use of NaOH in the final step is to neutralize the HCI so that the basic amine (which would otherwise be in the form of its conjugate acid ammonium ion) is non-polar enough to be extracted from the water. 2, record 8, English, - basic%20amine
Record number: 8, Textual support number: 2 CONT
Initially, we superposed active and inactive D2 agonists to examine the receptor-excluded vdW volume occupied by active D2 agonists. All compounds were superposed based on two pharmacophore groups(the phenolic oxygen and basic amine) and the centroid of the aromatic ring. 3, record 8, English, - basic%20amine
Record 8, French
Record 8, Domaine(s)
- Éléments et composés chimiques
- Chimie
Record 8, Main entry term, French
- amine basique
1, record 8, French, amine%20basique
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Les amino acides sont des composés qui possèdent une fonction amine (basique) et une fonction acide carboxylique (acide). 2, record 8, French, - amine%20basique
Record number: 8, Textual support number: 2 CONT
ABVT : Amine basique volatile totale. 3, record 8, French, - amine%20basique
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2010-05-18
Record 9, English
Record 9, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 9
Record 9, Main entry term, English
- beta-
1, record 9, English, beta%2D
correct, prefix
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, 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 9, English, - beta%2D
Record number: 9, Textual support number: 1 OBS
"ß" refers to the Greek letter beta. 2, record 9, English, - beta%2D
Record 9, Key term(s)
- beta
- B
Record 9, French
Record 9, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 9
Record 9, Main entry term, French
- bêta-
1, record 9, French, b%C3%AAta%2D
correct, see observation, prefix
Record 9, Abbreviations, French
Record 9, Synonyms, French
- béta- 1, record 9, French, b%C3%A9ta%2D
prefix
Record 9, Textual support, French
Record number: 9, 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 9, French, - b%C3%AAta%2D
Record number: 9, Textual support number: 1 OBS
«ß» représente la lettre grecque bêta. «B», ou «bêta», s'écrivent en italiques. 2, record 9, French, - b%C3%AAta%2D
Record number: 9, 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 9, French, - b%C3%AAta%2D
Record 9, Key term(s)
- béta
- B
- bêta
Record 9, Spanish
Record 9, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 9
Record 9, Main entry term, Spanish
- beta
1, record 9, Spanish, beta
correct, feminine noun
Record 9, Abbreviations, Spanish
Record 9, Synonyms, Spanish
Record 9, Textual support, Spanish
Record number: 9, 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 9, Spanish, - beta
Record number: 9, 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 9, Spanish, - beta
Record 10 - internal organization data 2004-05-18
Record 10, English
Record 10, Subject field(s)
- Research and Development (Petroleum Tech.)
Record 10, Main entry term, English
- Biocatalytic Aromatic Ring Cleavage
1, record 10, English, Biocatalytic%20Aromatic%20Ring%20Cleavage
correct
Record 10, Abbreviations, English
- BioARC 1, record 10, English, BioARC
correct
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
... the BioARC(Biocatalytic Aromatic Ring Cleavage) project which is being conducted by a group at the Centre for Oil Sands Research and Development, using designed strains of bacteria to provide controlled degradation of petroleum feedstock to reduce the need for hydrogen addition. 1, record 10, English, - Biocatalytic%20Aromatic%20Ring%20Cleavage
Record 10, French
Record 10, Domaine(s)
- Recherche et développement (Technol. pétrol.)
Record 10, Main entry term, French
- décyclisation du noyau atomique par biocatalyse
1, record 10, French, d%C3%A9cyclisation%20du%20noyau%20atomique%20par%20biocatalyse
feminine noun
Record 10, Abbreviations, French
- BioARC 1, record 10, French, BioARC
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
[...] le projet BioARC (décyclisation du noyau atomique par biocatalyse) confié à une équipe du Centre for Oil Sands Research and Development, qui tente d'effectuer une décomposition contrôlée de la matière première à l'aide de souches bactériennes minutieusement étudiées en vue de limiter l'ajout d'hydrogène. 1, record 10, French, - d%C3%A9cyclisation%20du%20noyau%20atomique%20par%20biocatalyse
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2003-11-17
Record 11, English
Record 11, Subject field(s)
- Aromatic Hydrocarbons
- Chemical Elements and Compounds
Record 11, Main entry term, English
- aromatic compound
1, record 11, English, aromatic%20compound
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
- aromatic 2, record 11, English, aromatic
correct, see observation, noun
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
An organic compound of the aromatic class. 2, record 11, English, - aromatic%20compound
Record number: 11, Textual support number: 2 DEF
Any of a large class of organic compounds including benzene and compounds that resemble benzene in chemical properties. 3, record 11, English, - aromatic%20compound
Record number: 11, Textual support number: 1 CONT
Aromatic compounds contain unusually stable ring structures, often made up of six carbon atoms arranged hexagonally. Some of the compounds, however, have rings with more or fewer atoms, not necessarily all carbon. Furan, for example, has a ring with four atoms of carbon and one of oxygen. Also, two or more rings can be fused, as in naphthalene. The characteristic properties of the class, notably the stability of the compounds, derive from the fact that aromatic rings permit the sharing of some electrons by all the atoms of the ring, which increases the strength of the bonds. 3, record 11, English, - aromatic%20compound
Record number: 11, Textual support number: 1 OBS
"Aromatic," as a noun, is often used in the plural form to designate the group of compounds. 4, record 11, English, - aromatic%20compound
Record 11, French
Record 11, Domaine(s)
- Hydrocarbures aromatiques
- Éléments et composés chimiques
Record 11, Main entry term, French
- composé aromatique
1, record 11, French, compos%C3%A9%20aromatique
correct, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
- aromatique 2, record 11, French, aromatique
correct, masculine noun
Record 11, Textual support, French
Record number: 11, Textual support number: 1 DEF
aromatique : [...] composé présentant un ensemble de propriétés physiques et chimiques comparables à celles du benzène [...] 2, record 11, French, - compos%C3%A9%20aromatique
Record number: 11, Textual support number: 1 CONT
La demande d'aromatiques, essentiellement benzène, toluène et xylène, comme matières premières de la chimie, est satisfaite à 92 % par le pétrole et à 8 % par le charbon. 2, record 11, French, - compos%C3%A9%20aromatique
Record 11, Spanish
Record 11, Campo(s) temático(s)
- Hidrocarburos aromáticos
- Elementos y compuestos químicos
Record 11, Main entry term, Spanish
- compuesto aromático
1, record 11, Spanish, compuesto%20arom%C3%A1tico
correct, masculine noun
Record 11, Abbreviations, Spanish
Record 11, Synonyms, Spanish
Record 11, Textual support, Spanish
Record number: 11, Textual support number: 1 DEF
Compuesto químico que posee aromaticidad. 2, record 11, Spanish, - compuesto%20arom%C3%A1tico
Record 12 - internal organization data 2003-07-14
Record 12, English
Record 12, Subject field(s)
- Chemistry
Record 12, Main entry term, English
- lignin anion
1, record 12, English, lignin%20anion
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 CONT
The lignin anion reacts to form radicals and unstable intermediates which result in aromatic ring opening. 2, record 12, English, - lignin%20anion
Record 12, French
Record 12, Domaine(s)
- Chimie
Record 12, Main entry term, French
- anion de la lignine
1, record 12, French, anion%20de%20la%20lignine
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
- anion de lignine 2, record 12, French, anion%20de%20lignine
avoid, see observation, masculine noun
Record 12, Textual support, French
Record number: 12, Textual support number: 1 OBS
La forme «anion de la lignine» est préférable à celle d'«anion de lignine». 3, record 12, French, - anion%20de%20la%20lignine
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2002-09-24
Record 13, English
Record 13, Subject field(s)
- Chemical Elements and Compounds
- Air Pollution
Record 13, Main entry term, English
- cyclic hydrocarbon
1, record 13, English, cyclic%20hydrocarbon
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
hydrocarbon. An organic compound consisting exclusively of the elements carbon and hydrogen. Derived principally from petroleum, coal tar, and plant sources.... the principal types [:] I. Aliphatic(straight-chain).... II. Cyclic(closed ring).(1) Alicyclic...(2) Aromatic...(3) Cyclic terpenes.... 2, record 13, English, - cyclic%20hydrocarbon
Record 13, Key term(s)
- Ring hydrocarbon
Record 13, French
Record 13, Domaine(s)
- Éléments et composés chimiques
- Pollution de l'air
Record 13, Main entry term, French
- hydrocarbure cyclique
1, record 13, French, hydrocarbure%20cyclique
correct, masculine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 DEF
Hydrocarbure dont le squelette est constitué par au moins une chaîne carbonée fermée. 2, record 13, French, - hydrocarbure%20cyclique
Record number: 13, Textual support number: 1 CONT
La famille des hydrocarbures compte un nombre considérable de corps présentant des conformations chimiques différentes. Suivant la forme prise par la chaîne carbonée, on distingue au premier ordre les hydrocarbures acycliques et les hydrocarbures cycliques. [...] Les hydrocarbures cycliques sont des composés dont la molécule comporte au minimum trois atomes de carbone liés entre eux et formant une chaîne fermée sur elle-même. Les cycles ainsi formés peuvent être simples, juxtaposés, enchevêtrés dans le plan et dans l'espace. 3, record 13, French, - hydrocarbure%20cyclique
Record 13, Spanish
Record 13, Campo(s) temático(s)
- Elementos y compuestos químicos
- Contaminación del aire
Record 13, Main entry term, Spanish
- hidrocarburo cíclico
1, record 13, Spanish, hidrocarburo%20c%C3%ADclico
masculine noun
Record 13, Abbreviations, Spanish
Record 13, Synonyms, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2001-01-18
Record 14, English
Record 14, Subject field(s)
- Chemistry
- Biological Sciences
Record 14, Main entry term, English
- aromatic ring
1, record 14, English, aromatic%20ring
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 DEF
The resonance-stabilized ring characteristic of aromatic organic compounds. 1, record 14, English, - aromatic%20ring
Record number: 14, Textual support number: 1 CONT
Most aromatic rings are planar six-membered rings (e.g., benzene or pyridine) or planar five-membered rings containing a hetero atom with an unshared electron pair (e.g,, furan or pyrrole). Although aromatic rings are unsaturated, they do not undergo the addition reactions characteristic of alkenes; instead, aromatic compounds are characterized by substitution reactions. Many organic compounds, such as naphthalene and purine, contain several aromatic rings fused together. 1, record 14, English, - aromatic%20ring
Record number: 14, Textual support number: 1 OBS
It appears that human, because of the course of evolution, do not have biochemical ability to synthesize the benzene ring. As a result, phenylalanine and tryptophan derivatives are essential in the human diet. 2, record 14, English, - aromatic%20ring
Record 14, French
Record 14, Domaine(s)
- Chimie
- Sciences biologiques
Record 14, Main entry term, French
- noyau aromatique
1, record 14, French, noyau%20aromatique
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
- anneau aromatique 2, record 14, French, anneau%20aromatique
masculine noun
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
La famille [...] des aminoacides non polaires [...] contient cinq aminoacides ayant une chaîne hydrocarbonée aliphatique: alanine, leucine, isoleucine, valine et proline, deux possédant des noyaux aromatiques : phénylalanine et tryptophane, et un contenant du soufre : la méthionine. Tous ces aminoacides sont moins solubles dans l'eau que ne le sont les aminoacides polaires. 1, record 14, French, - noyau%20aromatique
Record 14, Spanish
Record 14, Campo(s) temático(s)
- Química
- Ciencias biológicas
Record 14, Main entry term, Spanish
- anillo aromático
1, record 14, Spanish, anillo%20arom%C3%A1tico
masculine noun
Record 14, Abbreviations, Spanish
Record 14, Synonyms, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 1998-01-21
Record 15, English
Record 15, Subject field(s)
- Chemistry
Record 15, Main entry term, English
- homoaromatic
1, record 15, English, homoaromatic
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
Record 15, Textual support, English
Record number: 15, 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 15, English, - homoaromatic
Record number: 15, 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 15, English, - homoaromatic
Record 15, French
Record 15, Domaine(s)
- Chimie
Record 15, Main entry term, French
- homoaromatique
1, record 15, French, homoaromatique
correct
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, 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 15, French, - homoaromatique
Record number: 15, 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 15, French, - homoaromatique
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 1993-07-12
Record 16, English
Record 16, Subject field(s)
- Biomass Energy
- Microbiology and Parasitology
Record 16, Main entry term, English
- living biomass
1, record 16, English, living%20biomass
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
Nitrogen is also distributed differently in((cellulose and hemicellulose))... being protein like in living biomass while in coal it is partly bound in aromatic ring structures similar to pyridine. 2, record 16, English, - living%20biomass
Record 16, French
Record 16, Domaine(s)
- Énergie de la biomasse
- Microbiologie et parasitologie
Record 16, Main entry term, French
- biomasse vivante
1, record 16, French, biomasse%20vivante
correct, feminine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
La biomasse microbienne est récupérée, généralement par centrifugation, lavée afin d'éliminer le milieu de culture retenu entre les cellules et séchée à 105 degrés Celsius, en présence de sable de Fontainebleau, à poids constant. Cette technique peu sensible ne s'applique qu'aux suspensions assez denses et dans lesquelles les microorganismes sont les seules particules en suspension. De plus, il n'est pas possible de faire la distinction entre biomasse vivante et biomasse morte. 2, record 16, French, - biomasse%20vivante
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 1992-04-24
Record 17, English
Record 17, Subject field(s)
- Chemistry
- Biochemistry
Record 17, Main entry term, English
- guaiacyl
1, record 17, English, guaiacyl
correct
Record 17, Abbreviations, English
Record 17, Synonyms, English
Record 17, Textual support, English
Record number: 17, Textual support number: 1 DEF
a chemical component of lignin. It has a six-carbon aromatic ring with one methoxyl group attached. It is the predominant aromatic structure in softwood lignins. 1, record 17, English, - guaiacyl
Record 17, French
Record 17, Domaine(s)
- Chimie
- Biochimie
Record 17, Main entry term, French
- guaiacyle
1, record 17, French, guaiacyle
correct, masculine noun
Record 17, Abbreviations, French
Record 17, Synonyms, French
- o-méthoxyphényle 1, record 17, French, o%2Dm%C3%A9thoxyph%C3%A9nyle
correct, masculine noun
Record 17, Textual support, French
Record 17, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 1984-09-13
Record 18, English
Record 18, Subject field(s)
- Chemistry
- Biochemistry
Record 18, Main entry term, English
- indole ring 1, record 18, English, indole%20ring
Record 18, Abbreviations, English
Record 18, Synonyms, English
Record 18, Textual support, English
Record number: 18, Textual support number: 1 OBS
purine indole ring : noyau purique pyrimidine ring : noyau pyrimidique aromatic ring : noyau aromatique 1, record 18, English, - indole%20ring
Record 18, French
Record 18, Domaine(s)
- Chimie
- Biochimie
Record 18, Main entry term, French
- noyau indole
1, record 18, French, noyau%20indole
masculine noun
Record 18, Abbreviations, French
Record 18, Synonyms, French
Record 18, Textual support, French
Record number: 18, Textual support number: 1 OBS
Biochimie, TLIII, no 3, 1971, pp. 331-366 RA 1, record 18, French, - noyau%20indole
Record 18, Spanish
Record 18, Textual support, Spanish
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