Preferred Label : carbenes;
IUPAC definition : The electrically neutral species H sub 2 /sub C: and its derivatives, in which the
carbon is covalently bonded to two univalent groups of any kind or a divalent group
and bears two nonbonding electrons, which may be spin-paired (singlet state) or spin-non-paired
(triplet state). In systematic name formation, carbene is the name of the parent hydride
:CH sub 2 /sub hence, the name dichlorocarbene for :CCl sub 2 /sub . However, names
for acyclic and cyclic hydrocarbons containing one or more divalent carbon atoms are
derived from the name of the corresponding all-λ4-hydrocarbon using the suffix -ylidene.
E.g. prop-2-en-1-ylidene, H sub 2 /sub C CHCH: ethenylidene, H sub 2 /sub C C:; cyclohexylidene,
br/ br/ Subclasses of carbenes include acyl carbenes , imidoyl carbenes, and vinyl
carbenes.;
Origin ID : C00806;
Automatic exact mappings (from CISMeF team)
- carbene [MeSH Supplementary Concept]
- See also
The electrically neutral species H sub 2 /sub C: and its derivatives, in which the
carbon is covalently bonded to two univalent groups of any kind or a divalent group
and bears two nonbonding electrons, which may be spin-paired (singlet state) or spin-non-paired
(triplet state). In systematic name formation, carbene is the name of the parent hydride
:CH sub 2 /sub hence, the name dichlorocarbene for :CCl sub 2 /sub . However, names
for acyclic and cyclic hydrocarbons containing one or more divalent carbon atoms are
derived from the name of the corresponding all-λ4-hydrocarbon using the suffix -ylidene.
E.g. prop-2-en-1-ylidene, H sub 2 /sub C CHCH: ethenylidene, H sub 2 /sub C C:; cyclohexylidene,
br/ br/ Subclasses of carbenes include acyl carbenes , imidoyl carbenes, and vinyl
carbenes.
