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HETEROALKENES [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-01-15

English

Subject field(s)
  • Chemistry
  • Chemical Elements and Compounds
CONT

dienes: Compounds that contain two fixed double bonds (usually assumed to be between carbon atoms). ... Dienes in which one or more of the unsaturated carbon atoms is replaced by a heteroatom may be called heterodienes.

OBS

For example H2=CH-N=CH2; this term is rarely used. Heteroalkenes(q. v.) and heterocumulenes(q. v.) are better terms.

French

Domaine(s)
  • Chimie
  • Éléments et composés chimiques
CONT

diène : Composé qui comporte deux doubles liaisons fixes (en général, elles sont situées entre des atomes de carbone). [...] Les diènes dans lesquels un (ou plusieurs) atomes de carbone insaturé(s) est (sont) remplacé(s) par un hétéroatome sont nommés hétérodiènes.

OBS

Par exemple H2=CH-N=CH2; terme rarement utilisé. Les termes hétéroalcènes et hétérocumulènes (voir aussi ces fiches) sont meilleurs.

Spanish

Save record 1

Record 2 2002-01-15

English

Subject field(s)
  • Chemical Elements and Compounds
DEF

heteroalkenes : Analogues of alkenes in which a doubly bonded carbon atom is replaced by a heteroatom.

OBS

[For example:] H2Si=CH2methylidenesilane (silene less preferred), MeN=CH2N-methylmethanimine. [The letter "N" which precedes the word "methylmethanimine" must be italicized.]

OBS

heteroalkene : term often used in the plural("heteroalkenes").

Key term(s)
  • heteroalkenes

French

Domaine(s)
  • Éléments et composés chimiques
DEF

Analogue d'alcène dans lequel un atome de carbone doublement lié est remplacé par un hétéroatome.

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.]

OBS

hétéroalcène : terme souvent utilisé au pluriel («hétéroalcènes»).

Key term(s)
  • hétéroalcènes

Spanish

Save record 2

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