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Geometrical isomerism arising from C,S- or C,Se- coordination of carbon selenide sulphide and the conversion of a thiocarbonyl ligand to a selenocarbonyl ligand

1980; Elsevier BV; Volume: 195; Issue: 3 Linguagem: Inglês

10.1016/s0022-328x(00)93322-9

1872-8561

Penelope J. Brothers, Christine E. L. Headford, W.R. Roper,

Inorganic Chemistry and Materials

Reaction sequences commencing with nucleophilic attack on the CS ligand in the cationic species [MCl(CS)(CO)(CNR)(PPh3)2]+, (M = Ru or Os; R = p-tolyl) by SeH− lead to each of the geometrical isomers M(η2-CSeS)(CO)(CNR)(PPh3)2 and M(η2-CSSe)(CO)(CNR)(PPh3)2. For Ru(η2-CSeS)(CO)(CNR)(PPh3)2 reaction with MeI followed by HCl leads to RuCl2(CSe)(CNR)(PPh3)2 which overall represents a four-step conversion of a thiocarbonyl ligand to a selenocarbonyl ligand.