Acetylide is a carbanion with the chemical formula HC≡C−. The classification includes saline carbides and organometallic compounds of terminal alkynes and acetylene. Substituted acetylides, which have the general structure RC≡C− (where R is an organic side chain), are useful reagents in organic synthesis.

CAS：29075-95-4
中文别名：
英文别名：Acetylide;hydrogen acetylide;acetylide anion;ethynide;
分子式：C2H-
分子量：25.0293
精确质量：25.0078
Psa：0.0
Logp：0.206