Abstract

Protonolysis of the complexes trans-[Pt(PEt 3) 2(R)(Me)] (R = C 6H 5 ; m-MeC 6H 4 ; o-MeC 6H 4 ; m-FC 6H 4 ; p-FC 6H 4 ; m-CF 3C 6H 4 and C 6F 5) by hydrogen chloride in methanol/water ( 90 10 v/v) selectively cleaves the alkyl group yielding trans-[Pt(PEt 3) 2(R)Cl] and methane. A kinetic study of these reactions suggests that the primary step involves a proton transfer to the carbonmetal σ-bond with release of CH 4 in a three-center transition state.

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