Spectroscopic Studies of Polynuclear Complexes. II. Preparation and Optical Resolution of μ-Amido-μ-superoxo and μ-Amido-μ-peroxo Tetrakis(α-di-imine)dicobalt(III) Ions

Abstract

Abstract New binuclear cobalt(III) complexes of the type, [L2Co(μ-NH2,O2)CoL2](ClO4)n, where L is 1,10-phenanthroline or 2,2′-bipyridyl, and n=3 and 4, correspond to the so-called μ-peroxo and μ-superoxo form, respectively, were prepared and resolved into their optical isomers. Their absorption spectra have been compared with those of analogous ethylenediamine complexes and the structures have been discussed. The absolute configuration of these complexes has been determined by their circular dichroism spectra. The μ-peroxo complexes seem to be more stable than the corresponding μ-superoxo complexes in aqueous solution.