COMPLEXES OF COPPER(II) AND NICKEL(II) WITH NN'-BIS-8-QUINOLYLETHYLENEDIAMINE AND AZIDO OR CYANATO AS LIGANDS

Four new complexes of Cu(II) and Ni(II) with the tetradentate NN'-bis-8-quinolylethylenediamine ligand and N3- or NCO- have been prepared and characterized. Analytical and spectroscopic data indicate that Cu(II) complexes are pentacoordinated, being mononuclear when the cyanato group is the fifth ligand and dinuclear with azido acting as bridging ligand. Both Ni(II) derivatives are dinuclear with two azido or one cyanato and one hydroxo as bridging ligands. Cu(II) complexes are not magnetically coupled and both Ni(II) are weakly antiferromagnetically coupled (from susceptibility measurements up to He liquid temperature).