Lewis Acid/Base Reactions of the Bis(amidinato)silylene [iPrNC(Ph)NiPr]2Si and Bis(guanidinato)silylene [iPrNC(NiPr2)NiPr]2Si with ElPh3 (El = B, Al)

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• 作者：Felix M. Mück ; Johannes A. Baus ; Rüdiger Bertermann ; Christian Burschka ; Reinhold Tacke
• 刊名：Organometallics
• 出版年：2016
• 出版时间：August 22, 2016
• 年：2016
• 卷：35
• 期：16
• 页码：2583-2588
• 全文大小：320K
• 年卷期：0
• ISSN：1520-6041

文摘

The bis(amidinato)silylene [iPrNC(Ph)NiPr]₂Si and the analogous bis(guanidinato)silylene [iPrNC(NiPr₂)NiPr]₂Si react with the Lewis acids BPh₃ and AlPh₃ to form the respective Lewis acid/base adducts 4–7 (adduct 4 has already been described). Compounds 5 and 7 are the first silylene–alane adducts and the first five-coordinate silicon(II) compounds with an Si–Al bond, and 6 and 7 represent the first silylene–borane and silylene–alane adducts, respectively, that are derived from a bis(guanidinato)silylene. Compounds 4–7 were characterized by single-crystal X-ray diffraction and solid-state NMR spectroscopy (¹¹B, ¹⁵N, ²⁷Al, ²⁹Si), and 4 and 5 were additionally studied by NMR spectroscopy in solution (¹H, ¹¹B, ¹³C, ²⁷Al, ²⁹Si).