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Issue 4, 1992
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Dimethylplatinum complexes of polydentate alkene–sulfur and –selenium ligands

Abstract

Interaction of [PtMe2(SMe2)2] with 1 equivalent of 5-selenanona-1,8-diene produces a monomeric complex containing the ligand chelating through one alkene moiety and the selenium atom. The unco-ordinated alkene moiety undergoes exchange with the co-ordinated alkene moiety which has been studied by dynamic NMR spectroscopy. Interaction of the same platinum(II) precursor with 0.5 mol equivalent of the dialkenyl chalcogenoether ligands E(CH2CH2CH[double bond, length half m-dash]CH2)2(E = S or Se) produced the novel dinuclear complexes [Pt2Me4{µ-E(CH2CH2CH[double bond, length half m-dash]CH2)2}] both of which have been characterised by X-ray crystallography and shown to be isostructural. The unit cells are of dimensions a= 10.850(2), b= 11.289(7) and c= 12.415(1)(E = S) and a= 11.056(1), b= 11.251(1) and c= 12.546(2)Å, (E = Se). In each case the two metals are bridged by a tetrahedrally co-ordinated chalcogen atom, with one alkenyl group chelating to each platinum atom. The platinum–chalcogen distances are Pt–S 2.354(8) and Pt–Se 2.457(5)Å.

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Article type: Paper
DOI: 10.1039/DT9920000663
J. Chem. Soc., Dalton Trans., 1992, 663-667

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    Dimethylplatinum complexes of polydentate alkene–sulfur and –selenium ligands

    E. W. Abel, D. G. Evans, J. R. Koe, M. B. Hursthouse and M. Mazid, J. Chem. Soc., Dalton Trans., 1992, 663
    DOI: 10.1039/DT9920000663

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