The importance of diarylzinc complexes is readily apparent from their continued use as reagents in synthesis and catalysis. For example, the homoleptic biaryl complex, ZnPh 2 , has been used as a catalyst in the ring-opening of cyclic esters 8 and is incorporated as a component in the “diphenylzinc-additive initiator” system (ZnPh 2 + metallocene + MAO) for the polymerisation of olefins. 9 The molecular structure of diphenylzinc was first determined in 1990. 10 In ...