Compounds of Germanium, Tin, and Lead Containing the Ligand C(SiMe3)2(SiMe2C5H4N-2)

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• 作者：Salih S. Al-Juaid ; Anthony G. Avent ; Colin Eaborn ; Michael S. Hill ; Peter B. Hitchcock ; Deepa J. Patel ; and J. David Smith
• 刊名：Organometallics
• 出版年：2001
• 出版时间：March 19, 2001
• 年：2001
• 卷：20
• 期：6
• 页码：1223 - 1229
• 全文大小：93K
• 年卷期：v.20,no.6(March 19, 2001)
• ISSN：1520-6041

文摘

Reactions between LiC(SiMe₃)₂(SiMe₂C₅H₄N-2), 1, and the halides GeCl₂·dioxane, SnCl₂,and PbCl₂ gave the isostructural compounds MCl{C(SiMe₃)₂(SiMe₂C₅H₄N-2)} (M = Ge, 2;Sn, 3; or Pb, 4) which contain three-coordinate M. Treatment of the tin derivative 3 withMeI gave the oxidative addition product SnMeClI{C(SiMe₃)₂(SiMe₂C₅H₄N-2)}, 5, and thisreacted with AgOCOCF₃ or AgOSO₂C₆H₄Me-4 to give, respectively, the compounds SnMeX₂{C(SiMe₃)₂(SiMe₂C₅H₄N-2)} with X = OCOCF₃, 6, or OSO₂C₆H₄Me-4, 7. Despite the presenceof the bulky C(SiMe₃)₂(SiMe₂C₅H₄N-2) ligand, the Sn atom in the solid state structures of 6and 7 is five-coordinate, and multinuclear NMR studies show that five-coordinate speciesare present also in THF solutions of 5, 6, and 7.