COMPLEXES OF COPPER(II) WITH N,N′-BIS(4-ANTIPYRYLMETHYLIDENE)-ETHYLENEDIAMINE

ABSTRACT

Copper(II) complexes of the Schiff base N,N′-bis(4-antipyrylmethylidene)ethylenediamine (BAME) having the general formula [Cu(BAME)₂]X₂ (X=ClO₄, NO₃, Cl or Br) have been synthesized and characterized by elemental analyses, electrical conductance in non-aqueous solvents, infrared, electronic and EPR spectra as well as magnetic susceptibility measurements. In the complexes, BAME acts as a neutral bidentate ligand coordinating through both azomethine nitrogens. Both anions remain ionic, generating a square-planar geometry around copper(II) in all of these complexes.

ACKNOWLEDGMENTS

We thank the Heads of the Regional Sophisticated Instrumentation Centres at the Indian Institute of Technology, Chennai and the Indian Institute of Technology, Mumbai, for some instrumental analyses. We also thank the University Grants Commission for awarding a Teacher Fellowship to one of us (KCR) under the faculty improvement programme.