Dalton communications. Unusual magnetic and structural one-dimensional nickel(II) azido systems

Abstract

The complexes of general formula [Ni(L)(N₃)][ClO₄](L is meso-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane or 2,3-dimethyl-1,4,8,11-tetraazacyclotetradeca-1,3-diene), have been characterized by X-ray crystallography; both are chains in which the nickel(II)–tetraammine fragment is bridged by one µ-azido ligand in trans arrangement, showing unusual magnetic and/or crystallographic properties; preliminary magnetic susceptibility data indicate strong antiferromagnetic coupling.