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.

Key Words:

• Halide exchange
• electron transfer
• kinetics
• metal carbonyl anions
• atom transfer