Diorganotin(IV) derivatives of arenephosphinothiol ligands. The crystal structure of [Ph2Sn{2-(Ph2P)C6H4S}2] and [Me2Sn{2-(Ph2PO)-6-(Me3Si)C6H3S}2]

The diorganotin complexes, [Me2Sn{2-(Ph2P)C6H4S}2] (1), [Ph2Sn{2-(Ph2P)C6H4S}2] (2), [Me2Sn{2-(Ph2PO)-6-(Me3Si)C6H3S}2] (3) and [Ph2Sn{2-(Ph2PO)-6-(Me3Si)C6H3S}2] (4), have been prepared by reacting the corresponding diorganotin(IV) chloride with 2-(Ph2P)C6H4SH and 2-(Ph2PO)-6-(Me3Si)C6H3SH. Compound 2 crystallises in the monoclinic space group and the tin atom is tetrahedrally coordinated to two ligands acting as monodentate through the thiolate sulphur atoms. Compound 3 also crystallises in the monoclinic space group and, in this compound, the tin atom is octahedrically coordinated [SnC2O2S2]. Spectral data for the complexes (IR, NMR, FAB and Mössbauer spectra) are discussed and related to the structural information.