Synthesis and crystal structures of two nest-shaped cluster compounds, [MoOS3Cu3(SCN)py(5)] and [WOS3Cu3(SCN)py(5)]

The compounds [MOS3Cu3(SCN)X-5] (M = Mo, W; X = py, 4-CH(3)py, 4-tert-Bupy) have been prepared by the reaction of(NH4)(2)MO2S2 (M = MO, W), CuSCN and the appropriate ligand X under mild conditions and were characterized by elemental analyses, LR and UV-Vis spectra. Single-crystal X-ray analyses of both compounds reveal that they have a nest-shaped structure and the average M-Cu distances are 2.684(3) Angstrom for M = Mo and 2.693(2) Angstrom for M = W.