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Oxidative addition reactions of carbon diselenide and areneselenols to some iridium(I) and platinum(0) complexes

1974; Elsevier BV; Volume: 69; Issue: 1 Linguagem: Inglês

10.1016/s0022-328x(00)92995-4

1872-8561

Katsuhiko Kawakami, Yasuhiko Ozaki, Toshio Tanaka,

Organometallic Compounds Synthesis and Characterization

Reaction of carbon diselenide in 3 to 1 molar ratio, and areneselenols in equimolar ratio, with trans-IrCl(CO)(PPPh3)2 and PtL4, gives oxidative addition products, IrCl(CO)CSe2)(PPh3)2, Pt(CSe2)L2, IrHCl(CO)(SeC6H4Me-p)(PPh3)2, and PtH(SeR)L2, respectively (R = Ph and p-MeC6H4; L = PPh3 and PPh2Me). However, reactions of PtL4 with an excess of areneselenols afford bis(arylselenide) complexes Pt(SeR)2L2. The configurations of these complexes are discussed on the basis of their IR and PMR spectra. The carbon diselenide adducts are suggested to have configurations similar to the corresponding carbon disulfide adducts. The platinum hydrides are found to exist as a mixture of cis and trans isomers in solution, both the isomers being labile with regard to dissociative exchange of the tertiary phosphine ligands. The trans configurations of Pt(SeR)2(PPh2Me)2 are unambiguously shown by the virtually coupled triplet pattern of the PPh2Me signals.