Neutral Penta- and Hexacoordinate N-Heterocyclic Carbene Complexes Derived from SiX₄(X = F, Br)

Abstract

Reactions of silicon halides with N-heterocyclic carbene produce neutral penta- or hexacoordinate complexes IPr·SiF4 (1), IPr·SiF4·IPr (2), and IPr·SiBr4 (3) (IPr = :C[N(2,6-iPr2-C6H3)CH]2). Molecular structures of 1−3 were determined by X-ray diffraction studies and exhibit interesting structural features.