A Crystalline σ Complex of Copper

摘要

Over the last decades, our understanding of cr-bond activation at transition metals has progressed considerably from both fundamental and synthetic points of view thanks to the preparation and characterization of a variety of σ complexes. Here we report the synthesis and structural analysis of the first σ complex involving a coinage metal. The copper(I) complex 2 derived from the dipho-sphine-disilane[Ph_2P(C_6H_4)Me_2Si-SiMe_2(C_6H_4)PPh_2] (1) has been isolated and crystallographically characterized. The coordination of the Si-Si σ bond to copper was thoroughly analyzed by quantum-chemical methods.