Preparation and Properties of Mixed Ligand Dinuclear Copper(II) Complexes Bridged by Deprotonated Oximato and Hydroxo or Acetato

Mixed ligand dinuclear copper(II) complexes bridged by one deprotonated oximato and one hydroxo or two acetato were prepared and characterized according to their magnetic susceptibilities, electric conductivities, visible absorption spectra, and cyclic voltammograms. A very strong antiferromagnetic interaction between two copper(II) ions in hydroxo-bridged complexes has been observed (coupling constants J = −520 – −530 cm−1, H = −2JS1·S2). Two acetato-containing complexes comprise triply (one deprotonated oximato and two acetato) bridged coppers, which are characterized by J = −130 – −235 cm−1.