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 SbCl₃L_1.5 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 SbCl₃L_1.5 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.