Compounds arising by replacement of one or both hydrogen atoms of acetylene (ethyne)
by a metal or other cationic group. E.g.
NaC≡CH
monosodium acetylide. By extension, analogous compounds derived from terminal
acetylenes,
RC≡CH.
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1311