Studies of dioxamide and dithio-oxamide metal complexes. Part 1. Crystal and molecular structures of SbCl3L1.5 (L = NN′-diethyldithio-oxamide) and uncomplexed L

Abstract

Crystals of SbCl3L1.5 are monoclinic, space group C2/c, with unit cell dimensions a = 30.84(1), b = 9.37(1), c = 13.96(1) Å, β = 107.0(1)°, and Z = 8. 1 991 Independent reflections collected on a diffractometer have been refined to R 0.055. Crystals of L are monoclinic, space group P21/c, with a = 4.502(7), b = 6.024(9), c = 16.425(11) Å, β = 91.3(1)°, and Z = 2. 495 Independent reflections collected on a diffractometer have been refined to R 0.061. The geometry of the ligand is trans in both structures. The structure of SbCl3L1.5 is polymeric with each ligand acting as a bidentate bridging group to separate SbCl3 moieties via SS donation. The antimony atoms are six-co-ordinate with the three sulphur atoms approaching to the fac octahedral positions, Sb-Cl 2.340(3), 2.388(3), 2.381(3); Sb-S 3.212(3), 3.396(3), and 3.165(3) Å.