nitriles

https://doi.org/10.1351/goldbook.N04151
Compounds having the structure RC≡N; thus C-substituted derivatives of hydrocyanic acid, HC≡N. In systematic nomenclature, the suffix nitrile denotes the triply bound ≡N atom, not the carbon atom attached to it.
See also:
cyanides
,
isocyanides
,
carbonitriles
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1350 [Terms] [Paper]