Term Name:	carbene
Synonyms:	carbenes
Definition:	The electrically neutral species H2C2• 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).
Ontology:	ChEBI [CHEBI:51363]  ( EBI )