Crystal structure of di-µ-chloro-dichlorobis(methyl pyrrolidine-1-carbodithioate)dimercury(II)

Abstract

The crystal structure of the title compound has been determined from X-ray diffractometer data and refined by full-matrix least-squares to R 0·09 (all 1167 data). Crystals are triclinic, space group P, a= 8·618(1), b= 8·637(1), c= 8·544(1)Å, α= 90·72(1), β= 101·67(1), γ= 113·73(1)°, Z= 2. The mercury atom is irregularly four-co-ordinated by two crystallographically equivalent bridging chlorine atoms, Hg–Cl, Cl′, 2·57, 2·78(1)Å, Hg–Cl–Hg′, 92·7(3)°, leading to a pseudo dimeric molecule about the centre of symmetry; a second non-bridging chlorine is at 2·37(1)Å, and the non-methylated sulphur of the unidentate dithioester at 2·42(1)Å. The C–S distances in the ester are not equal CS(Hg)1·68(4), C–S(Me) 1·77(4)Å, S–C–S, 123(2)°. The remainder of the dithiocarbamate ligand geometry is as expected.