Structure Du C‐Chloro‐1,2,4‐Triazole En Phase Gazeuse

Mass analysed ion kinetic energy and collision induced dissociation spectra show that C‐chloro‐1, 2, 4‐triazole can be generated in three different tautomeric forms by ethylene elimination from the N‐ethyl compounds and these ions retain their structure prior to further fragmentation. 5‐ and predominantly 3‐chlorotriazole structures are responsible for the mass spectrum of the parent heterocycle.