Nucleophilic substitution of [Pt(η5-C5Me5)(CO)X](X = Cl, Br); isolation of a ring-slipped intermediate

Abstract

The toluene mediated reaction of [Pt(η⁵C₅Me₅)(CO)X](X = Cl, Br) with tertiary phosphines affords the unstable intermediates [Pt(η¹-C₅Me₅)(CO)(PR₃)X] which decompose with loss of either CO or halide to give [Pt(η⁵-C₅Me₅)(PR₃)Br] or [Pt(η⁵-C₅Me₅)(PR₃)(CO)]⁺Cl^–.