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POSITION ISOMERISM [4 records]
Record 1 - internal organization data 1986-03-04
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- functional isomerism
1, record 1, English, functional%20isomerism
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
... a type of isomerism in which the difference is not(necessarily) in the position of the atoms, but also in their valence, or chemical nature, or both; in short, in the functional groups present. Examples are ether an alcohol.... 2, record 1, English, - functional%20isomerism
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- isomérie de fonction
1, record 1, French, isom%C3%A9rie%20de%20fonction
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
(...) l'isomérie de fonction (...) se rencontre lorsque les molécules renferment des groupes fonctionnels différents, par exemple le groupe COOH de l'acide acétique CH3 - COOH et le groupe COOCH3 du formiate de méthyle HCOOCH3. 1, record 1, French, - isom%C3%A9rie%20de%20fonction
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1986-03-04
Record 2, English
Record 2, Subject field(s)
- Chemistry
Record 2, Main entry term, English
- functional isomer
1, record 2, English, functional%20isomer
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Functional isomers ... differ in functional group, that is, the group (or groups) most material in determining chemical behavior. 1, record 2, English, - functional%20isomer
Record number: 2, Textual support number: 2 CONT
Functional isomerism. Functional isomerism is a type of isomerism in which the difference is not(necessarily) in the position of the atoms, but also in their valence, or chemical nature, or both; in short, in the functional groups present. 2, record 2, English, - functional%20isomer
Record 2, French
Record 2, Domaine(s)
- Chimie
Record 2, Main entry term, French
- isomère de fonction
1, record 2, French, isom%C3%A8re%20de%20fonction
proposal, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- isomère fonctionnel 1, record 2, French, isom%C3%A8re%20fonctionnel
proposal, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Isomérie de fonction. (...) l'isomérie de fonction (...) se rencontre lorsque les molécules renferment des groupes fonctionnels différents par exemple le groupe COOH de l'acide acétique CH3 - COOH et le groupe COOCH3 du formiate de méthyle HCOOCH3. 2, record 2, French, - isom%C3%A8re%20de%20fonction
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1986-02-28
Record 3, English
Record 3, Subject field(s)
- Chemistry
Record 3, Main entry term, English
- position isomerism
1, record 3, English, position%20isomerism
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- structural isomerism 2, record 3, English, structural%20isomerism
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
... position isomerism... results from differences in the arrangement of atoms or groups of atoms in the molecules. 2, record 3, English, - position%20isomerism
Record 3, Key term(s)
- positional isomerism
Record 3, French
Record 3, Domaine(s)
- Chimie
Record 3, Main entry term, French
- isomérie de position
1, record 3, French, isom%C3%A9rie%20de%20position
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
(...) l'isomérie de position (...) se rencontre lorsque les molécules isomères renferment un même groupe fonctionnel qui peut être placé à des points différents du même squelette carboné (...) 2, record 3, French, - isom%C3%A9rie%20de%20position
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1986-02-26
Record 4, English
Record 4, Subject field(s)
- Chemistry
Record 4, Main entry term, English
- optical isomerism
1, record 4, English, optical%20isomerism
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Optical isomerism is a form of stereoisomerism which differs from geometrical isomerism in that there is no plane of symmetry in the molecule, so that the two forms are mirror-images, and cannot be turned into a position of coincidence. 2, record 4, English, - optical%20isomerism
Record 4, French
Record 4, Domaine(s)
- Chimie
Record 4, Main entry term, French
- isomérie optique
1, record 4, French, isom%C3%A9rie%20optique
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
L'isomérie optique est présentée par des molécules qui ne possèdent aucun élément de symétrie autour d'un atome pris en tant que centre (...) et qui peuvent, par conséquent, exister sous forme de deux modifications représentables par des formules non superposables dans l'espace et dont l'une est l'image optique de l'autre. Ces substances présentent une propriété particulière liée à cette asymétrie moléculaire, c'est-à-dire l'activité optique (pouvoir de faire tourner d'un certain angle le plan de polarisation de la lumière polarisée qui les traverse). 2, record 4, French, - isom%C3%A9rie%20optique
Record 4, Spanish
Record 4, Textual support, Spanish
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