Synthesis and structural characterization of the complex [Et4N](2)[Ni-2(C2S4)(C3S5)(2)]

The heteroleptic dmit complex [Et4N](2)[Ni-2(C2S4)(C3S5)(2)] has been prepa red by the reaction of NiCl2. H2O with Na(2)dmit, NaSC2H4OH in the MeOH sol ution. The compound has been characterized by X-ray diffraction study, IR a nd UV-Vis spectroscopy. Crystallographic data : space group: P2(1)/n, a = 1 1.813(2), b = 11.079(1), c = 15.404(1) Angstrom, beta = 110.33(1)degrees, V = 1895.1 Angstrom(3), Z = 2, D-c = 1.62 g/cm(3), mu = 17.6 cm(-1), F(000) = 956, R = 0.052, R-omega = 0.061. In the structure of the title complex, t he tto (tto = tetrathioxalato) ligand in bridging form is chelated to two n ickel atoms and dmit (dmit = 1, 3-dithiole-2-thione-4,5-dithiolate) ligands coordinated to nickel atoms.