Pyridazines. XXXIV. Electron‐impact induced fragmentation of some <i>s</i>‐triazolo[4,3‐<i>b</i>] pyridazines, tetrazolo[1,5‐<i>b</i>] pyridazines and related compounds

Abstract

Abstract Mass spectra of several 4‐triazolo[4,3‐ b ]pyridazines and tetrazolo[1,5‐ b ]pyridazines were examined in order to establish their fragmentation patterns. Two distinct patterns could be observed upon electron impact of s ‐triazolo[4,3‐ b ]pyridazines and tetrazolo[1,5‐ b ]pyridazines. Azidotetrazolopyridazines show a loss of six nitrogens. This can be accounted for by a path proceeding via a molecular ion with a bis‐tetrazolo structure.