Methylidyne group

In organic 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.^[1] For example, a methylidyne group is present in n-methylidyne-1-hexanaminium, H₃C−(CH₂)₅−N⁺≡CH.

The name "methylidyne" is also used for the methylidyne radical (carbyne) ⫶CH, the same two atoms not bound to any other atom.

See also

• Methylene group or methylidene =CH
  ₂
• Methylene bridge or methanediyl −CH
  ₂−
• Methine group, methylylidene, or methanylylidene =CH−
• Methanetriyl group >CH−
• Methylylidyne group ≡C−