Abstract
The reactions of silicon(II) bis(trimethylsilyl)amide (1; LSiN(SiMe3)2, L = PhC(NtBu)2) with the readily available CuI, AgOTf (Tf = SO2CF3), AgNO3, and AuCl(SMe2) have been reported, which resulted in a series of silylene–coinage-metal complexes (2–5) with Si(II)→coinage-metal bonds. Each compound has been characterized by multinuclear NMR spectroscopy, mass spectrometry, elemental analysis, and single-crystal X-ray diffraction studies. X-ray analyses of 2 and 3 showed that they are dimeric in nature, featuring four-membered Cu2I2 and Ag2O2 rings, respectively. However, 4 and 5 are mononuclear complexes with a silylene ligand and possess only one SiII→Ag or SiII→Au bond, respectively. Prior to our contribution, there have been very few structurally authenticated silylene–silver and silylene–gold complexes known. Therefore, 2–5 are noteworthy additions to the Si(II)–coinage-metal complexes.
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