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The Government of Canada’s terminology and linguistic data bank.
HYPERCONJUGATION [3 records]
Record 1 - internal organization data 2011-11-02
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- hyperconjugation
1, record 1, English, hyperconjugation
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
In the formalism that separates bonds into [sigma] and [pi] types, hyperconjugation is the interaction of [sigma] bonds with a [pi] network. This interaction is customarily illustrated by contributing structures... 2, record 1, English, - hyperconjugation
Record number: 1, Textual support number: 1 OBS
The concept of hyperconjugation is also extended to carbenium ions and radicals, where the interaction is now between [sigma] bonds and an unfilled or partly filled [pi]-or p-orbital. 2, record 1, English, - hyperconjugation
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- hyperconjugaison
1, record 1, French, hyperconjugaison
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Interaction électronique d'une liaison simple soit avec un centre cationique ou radicalaire, soit avec une double liaison ou un système délocalisé d'électrons. 2, record 1, French, - hyperconjugaison
Record number: 1, Textual support number: 1 CONT
Selon le formalisme où l'on distingue les liaisons-[sigma] des liaisons-[pi], l'hyperconjugaison est l'interaction-[sigma] avec un système-[pi]. Cette interaction est traditionnellement illustrée par la contribution de structures limites [...] 3, record 1, French, - hyperconjugaison
Record number: 1, Textual support number: 1 OBS
Le concept d'hyperconjugaison a aussi été étendu aux ions carbénium et aux radicaux, l'interaction s'établissant alors entre des liaisons-[sigma] et une liaison [pi] ou une orbitale p vacante ou partiellement occupée. [...] 3, record 1, French, - hyperconjugaison
Record number: 1, Textual support number: 2 OBS
hyperconjugaison : terme et définition publiés au Journal officiel de la République française le 8 octobre 2003. 4, record 1, French, - hyperconjugaison
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1998-01-22
Record 2, English
Record 2, Subject field(s)
- Chemistry
Record 2, Main entry term, English
- isovalent hyperconjugation
1, record 2, English, isovalent%20hyperconjugation
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 OBS
This is sometimes called an example of isovalent hyperconjugation(the contributing structure containing the same number of two-electron bonds as the normal Lewis formula). 1, record 2, English, - isovalent%20hyperconjugation
Record 2, French
Record 2, Domaine(s)
- Chimie
Record 2, Main entry term, French
- hyperconjugaison isovalente
1, record 2, French, hyperconjugaison%20isovalente
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
[...] [lorsque] la structure limite comprend le même nombre de liaisons à deux électrons que la formule de Lewis normale, on parle quelquefois d'«hyperconjugaison isovalente». 1, record 2, French, - hyperconjugaison%20isovalente
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1998-01-22
Record 3, English
Record 3, Subject field(s)
- Chemistry
Record 3, Main entry term, English
- heterovalent hyperconjugation
1, record 3, English, heterovalent%20hyperconjugation
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- sacrificial hyperconjugation 1, record 3, English, sacrificial%20hyperconjugation
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
... heterovalent or sacrificial hyperconjugation, so named because the contributing structure contains one two-electron bond less than the normal Lewis formula for toluene. 1, record 3, English, - heterovalent%20hyperconjugation
Record 3, French
Record 3, Domaine(s)
- Chimie
Record 3, Main entry term, French
- hyperconjugaison hétérovalente
1, record 3, French, hyperconjugaison%20h%C3%A9t%C3%A9rovalente
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- hyperconjugaison à covalence sacrifiée 1, record 3, French, hyperconjugaison%20%C3%A0%20covalence%20sacrifi%C3%A9e
correct, feminine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 OBS
[...] [lorsque] la structure limite associée comprend une liaison à deux électrons de moins que la formule de Lewis normale, on parle parfois d'«hyperconjugaison hétérovalente» ou d'«hyperconjugaison à covalence sacrifiée». 1, record 3, French, - hyperconjugaison%20h%C3%A9t%C3%A9rovalente
Record 3, Spanish
Record 3, Textual support, Spanish
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