HALIDE EXCHANGE REACTIONS BETWEEN CpW(CO)3 ? AND CpMo(CO)3X

Abstract

Halogen atom transfer from CpMo(CO)₃X (X = Cl, Br and I) to CpW(CO)₃ ^? forming CpMo(CO)₃ ^? and CpW(CO)₃X occurs with a first-order dependence on the oxidant and the reductant. The rate constants show a very small dependence on the identity of X, suggesting a mechanism involving nucleophilic attack by CpW(CO)₃ ^? on a carbonyl of CpMo(CO)₃X.