X-Ray crystal structures of two products formed in the reaction of dicobalt octacarbonyl with carbon disulphide: dodecacarbonylcarbidohexacobalt disulphide, Co6C(CO)12S2, and bis-(enneacarbonyltricobaltcarbon) disulphide, (CO)9Co3CSSCCo3(CO)9

Abstract

Two complexes formed in the reaction of dicobalt octacarbonyl with carbon disulphide were identified through X-ray crystallography as Co₆C(CO)₁₂S₂(1) and [(CO)₉Co₃CS]₂(2); the cluster core of (1) is composed of a trigonal prism of six cobalt atoms capped symmetrically by two sulphur atoms, and containing a carbide atom in the centre, whereas (2) is a trans-disulphide of the enneacarbonyltricobaltcarbon cluster, showing distortion of the idealized threefold local symmetry of the Co₃CS entities presumably owing to repulsive interactions between the sulphur and (equatorial) carbonyl-C atoms.