Copper(II) complexes of a novel ligand 4,5-dicyanoimidazole: structural and magnetic studies

Abstract

The potential use of 4,5-dicyanoimidazolate ion (DCI^–) as a bridging ligand for magnetically interesting co-ordination polymers has been explored. New Cu^II–bipy complexes containing DCI^– were prepared and characterised; crystal structure analysis revealed DCI^– co-ordinated Cu^II in one of the complexes. The ESR and magnetic susceptibility studies showed that the compounds are nearly Curie paramagnetic or weakly antiferromagnetic. A polymeric structure is proposed for one of the complexes.