Blausäure‐N‐methylid: Darstellung, spektroskopische Eigenschaften und seine Beziehung zu anderen C2H3N‐Isomeren

Hydrogen Cyanide N‐Methylide: Preparation, Spectroscopic Identification, and Its Relationship to Other C2H3N Isomers With the intention of isolating 1H‐azirene (8) we studied several precursors which should offer an entry into the C2H3N potential energy hypersurface. It was found that in addition to the known isomers 1, 2, 3, and 6 hydrogen cyanide N‐methylide (5) — and probably aminoacetylene (4) — can be detected in an argon matrix at 10 K. No spectroscopic evidence for the formation of 1H‐azirene (8) was found. In other words, the first six members 1—6 are now all identified. The elucidation of the structure of the new C2H3N species is based on the comparison of the observed IR spectra with those calculated by ab initio methods.