Crystal structures of µ-[2,2′-bipyridylcadmium]-bis(pentacarbonylmanganese)(2Cd–Mn) and µ-[1,10-phenanthrolinecadmium]-bis(pentacarbonylmanganese)(2Cd–Mn)

Abstract

Crystals of the title compounds [bipyridyl complex (III), phenanthroline complex (IV)] are monoclinic with Z= 4, space group P21/n; (III): a= 14·429(15), b= 15·805(16), c= 10·423(10)A, β= 94·62(2)°; (IV): a= 14·574(15), b= 16·258(16), c= 10·453(10)A, β= 96·87(2)°. The structures were solved from diffractometer data by Patterson and Fourier methods and refined by least squares to R 5·27 (2041 reflexions) and 5·76%(1431 reflexions) respectively. The two structures are closely similar: the cadmium atom is co-ordinated by two nitrogen and two manganese atoms in a distorted tetrahedral arrangement, and there is considerable distortion of the octahedral manganese co-ordination. Both molecules have approximate C2 symmetry.