METAL COMPLEXES OF LIGANDS .8. SQUARE-PLANAR BINUCLEAR COPPER(II) COMPLEXES WITH RING-SUBSTITUTED SALICYLALDIMINES

A series of copper(II) complexes with ring-substituted, bidentate salicylaldimine ligands and the corresponding binuclear copper halide derivatives has been prepared and studied. The spectral and magnetic properties of the parent mononuclear complexes and of their binuclear derivatives are interpreted in terms of an essentially planar environment about the copper atoms. No significant dependence of the stereochemistry upon the bulkiness of the substituent on the nitrogen atom of the salicylaldimine group is observed. These results contrast with those for the analogous complexes with no ring substituents, in which there is a strong dependence of the stereochemistry on the bulkiness of the nitrogen substituent in the parent mononuclear complexes and a similar but smaller dependence in the binuclear derivatives. The role of magnetic and infrared data as an analytical tool for the binuclear complexes is discussed. © 1969, American Chemical Society. All rights reserved.