Activation of a Si=Si Bond by eta~1-Coordination to a Transition Metal

摘要

Since the ground breaking discovery of a stable disilene by West,Michl,and Fink in 1981,low-valent silicon compounds have received considerable attention.In the meantime,numerous stable disilenes have been prepared,taking advantage of either kinetic stabilization by bulky substituents or electronic stabilization within the coordination sphere of transition metals.To date,examples of eta~2-disilene complexes cover a wide range of transition metals from groups 4,6,8,and 10.Conversely,no eta~1-disilenide complexes,3rd row analogues of the extensively studied eta~1-vinyl complexes,have yet been reported.The disilenides recently obtained by ourselves and others should be suitable precursors for such compounds.