Structure and bonding in sulphatobis(thiourea)tin(II)

Abstract

The crystal structure of the title compound has been determined from X-ray diffractometer data by Patterson and Fourier methods. Crystals are orthorhombic, space group P2₁2₁2, with Z= 4 in a unit cell of dimensions: a= 16·98, b= 12·86, c= 5·22 Å. The structure was refined by least-squares methods to R 0·083 for 1023 reflections. The tin atoms are in distorted pyramidal sites surrounded by two sulphate oxygen atoms at 2·41 and 2·24 Å and by two thiourea sulphur atoms at 2·62 and 2·86 Å. The thiourea groups are planar but not equivalent and are linked to the sulphate ions by hydrogen bonding.