SELENOCARBONYL COMPLEXES OF IRIDIUM(I) AND IRIDIUM(III). SYNTHESIS AND REACTIONS OF IrCl(CSe)PPh3)2

Article abstract of DOI:10.1016/S0022-328X(00)99848-6

A five-step conversion of IrCl(CO)(PPh3)2 into IrCl(CSe)(PPh3)2 via Ir(η²-CSe2)Cl(CO)(PPh3)2 is described.IrCl(CSe)(PPh3)2 is oxidized by Cl2 to IrCl3(CSe)(PPh3)2 and by O2 to Ir(η²-O2)Cl(CSe)(PPh3)2, and reaction with Ag⁺ in MeCN gives ⁺.NaBH4 in the presence of PPh3 reduces IrCl(CSe)(PPh3)2 completely to IrH2(SeMe)(PPh3)3 and the η²-CSe2 adduct, Ir(η²-CSe2)Cl(CSe)(PPh3)2, with MeI forms the metallacycle .