Formation and properties of phosphaquinomethane tungsten(0) complexes – isolation and conversion of primary radical coupling products

Abstract

A rational approach to phosphaquinomethane metal(0) complexes, based on dearomatization of the phenylene unit in [W(CO)₅](R)P(Cl)–C₆H₅–CPh₂, is described, including theoretical studies on mechanisms and structures. Furthermore, the first phosphaquinone tungsten complex with reversible redox properties is reported thus illustrating the beneficial stabilization of ligation.