In chemistry, a methylidyne group or just methylidyne is a neutral part of a molecule (a substituent or functional group) with formula ≡CH, consisting of a carbon atom bonded to a hydrogen atom by one single bond and to the rest of the molecule by one triple bond. As, for example, in n-methylidyne-1-hexanaminium, H
The name "methylidyne" is also used for the methylidyne radical (carbyne) ⫶CH, the same two atoms not bound to any other atom.
- Methylene group or methylidene =CH
- Methylene bridge or methanediyl −CH
- Methine group, methylylidene, or methanylylidene =CH−
- Methanetriyl group >CH−
- Methylylidyne group ≡C−
- (2013) Methylidyne group in the Chemical Entities of Biological Interest (ChEBI) database. Accessed on 2013-02-06.
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