Synthesis and characterization of trinuclear osmium clusters containing diallylphosphines as hemilabile ligands: Experimental and theoretical studies of their reactivity with nucleophilic molecules

Reactions of 1a and 1b with nucleophile molecules, such as CO, PPh3 and allene, demonstrate that the diallylphosphines can indeed act as hemilabile ligands in polynuclear complexes, and may provide easy access to various substituted products including those that contain unusual coordinations as observed with allene.