Complexes of mercury. Part III. X-Ray analysis of dichlorobis-(1,4-thioxan)mercury(II)

Abstract

Dichlorobis-(1,4-thioxan)mercury(II) crystallises in the orthorhombic system, space group Pn2₁a, with four molecules of C₈H₁₆Cl₂HgO₂S₂ in a cell of dimensions a= 15·31, b= 19·69, c= 4·33 Å. The mercury atom is co-ordinated in a distorted tetrahedral manner by two sulphur atoms at an average distance of 2·57 Å and two chlorine atoms at an average distance of 2·48 Å. The angles S–Hg–S and Cl–Hg–Cl are 115 and 114°, respectively. Each thioxan molecule is in the chair conformation with the S–Hg bond oriented equatorially.