An N-Heterocyclic Carbene−Disilyne Complex and Its Reactivity toward ZnCl2

摘要

The reaction of disilyne 1 with 1,3,4,5-tetramethylimidazol-2-ylidene (an N-heterocyclic carbene, NHC) produced the disilyne−NHC complex 2, RLSi═SiR: (R = SiiPr[CH(SiMe₃)₂]₂, L = NHC), with a trans geometry of the Si═Si moiety and lone-pair electrons residing on one of the double-bonded Si atoms. Upon complexation of 2 with ZnCl₂, the disilyne−NHC−ZnCl₂ complex 3 was produced, in which the Si═Si bond adopted the cis geometry.