Structural studies of metal dithiocarbamates. Part IV. The crystal and molecular structure of cadmium(II)NN-diethyldithiocarbamate

Abstract

The crystal and molecular structure of cadmium(II)NN-diethyldithiocarbamate has been determined from three-dimensional X-ray data and refined by anisotropic least-squares methods to a final R value of 0·084. Crystals are monoclinic, space group P2₁/c, with a= 10·166, b= 10·746, c= 16·717 Å, β= 111° 53′. In the solid state the complex is binuclear, the two halves of the molecule being related by a centre of symmetry, and should be formulated as [Cd₂(S₂CNEt₂)₄]. Two of the four NN-diethyldithiocarbamate groups act as bridging ligands, giving rise to a puckered eight-membered ring which comprises two cadmium, four sulphur, and two carbon atoms. The two symmetry-related cadmium atoms are five-co-ordinate, the co-ordination polyhedron being intermediate between a tetragonal pyramid and a trigonal bipyramid. The five cadmium–sulphur bond distances range from 2·536 to 2·800 Å.