Nitrogen-14 and chlorine-35 quadrupole resonance in some N-(1-chloro-2,4-diazabut-3-enylidene)-N,N-dimethylammonium salts

Abstract

Nitrogen-14 and chlorine-35 quadrupole resonance frequencies have been measured at room temperature for a series of six closely related N·(1-chloro-2,4-diazabut-3-enylidene)-N,N-dimethylammonium salts and two related compounds. Reasonable assignments of all ¹⁴N frequencies have been made and their variations with structure are discussed. The results support the structure R¹NCR²-NH–CClNMe₂X– for all the salts examined; it appears to be the predominant resonance from, and the cation has therefore been named on this basis.