PSEUDOTETRAHEDRAL COBALT(II) COMPLEXES OF C3vand CsSYMMETRIES

Abstract
New complexes of the general types HCoX3 ·nL and HCo Y2X·nL (X=Br, I; Y=Cl, Br, I; L=diethyl ether, pyridine, aniline; n=1, 2, 3 and 4) have been prepared and characterized by elemental analyses, molar conductance measurements, magnetic measurements, spectral (UV, visible, IR and far-IR) data and X-ray powder patterns. All the magnetic and spectroscopic results indicate that pseudotetrahedral [CoX3L] and [CoY2XL] anions are present in the solid pyridine and aniline complexes. The data for the solid compounds are compatible with, and lend support to, outer spheres comprising (N[sbnd]H[sbnd]N)+ groups.