Reactivity of Aluminum Trialkyls R3Al, Diorganoaluminum Chlorides R2AlCl (R = Me, Et, t-Bu), and Me2AlH toward Sb(SiMe3)3: Synthesis and Structural Characterization of Al−Sb Compounds Containing σ or Dative Bonds

Reactivity of Aluminum Trialkyls R3Al, Diorganoaluminum Chlorides R2AlCl (R = Me, Et, t-Bu), and Me2AlH toward Sb(SiMe3)3: Synthesis and Structural Characterization of Al−Sb Compounds Containing σ or Dative Bonds
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三烷基铝 R3Al、二有机氯化铝 R2AlCl (R = Me、Et、t-Bu) 和 Me2AlH 对 Sb(SiMe3)3 的反应活性:含有 σ 或配位键的 Al−Sb 化合物的合成和结构表征

DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
M. Nieger
M. Nieger
中科院分区:
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文献类型:
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作者:
S. Schulz;M. Nieger

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本文描述了Sb(SiMe_3)_3与不同的三烷基铝R_3Al(R = Me,Et,t-Bu)和二有机氯化铝R_2AlCl(R = Me,Et,t-Bu)以1:1摩尔比的反应。三烷基铝形成简单的刘易斯酸-碱加合物,R3 Al ←Sb(SiMe 3)3(R = Me(1),Et(2),t-Bu(3))。Me 2AlCl和Me 2AlH反应生成六元环体系cyclo-[Me(Cl)AlSb(SiMe 3)2]3(4)和cyclo-[Me 2AlSb(SiMe 3)2]3(7),而空间上更拥挤的Et 2AlCl和t-Bu 2AlCl形成R2 AlCl <$Sb(SiMe 3)3型刘易斯酸碱加合物(R = Et(5),t-Bu(6))。通过单晶X射线衍射测定了2、6和7的固态结构。
Reactions of Sb(SiMe3)3 with different aluminum trialkyls, R3Al (R = Me, Et, t-Bu), and diorganoaluminum chlorides, R2AlCl (R = Me, Et, t-Bu), in a 1:1 molar ratio are described. Aluminum trialkyls form simple Lewis acid−base adducts, R3Al←Sb(SiMe3)3 (R = Me (1), Et (2), t-Bu (3)). Reactions of Me2AlCl and Me2AlH lead to the six-membered-ring systems cyclo-[Me(Cl)AlSb(SiMe3)2]3 (4) and cyclo-[Me2AlSb(SiMe3)2]3 (7), while the sterically more crowded Et2AlCl and t-Bu2AlCl form Lewis acid−base adducts of the type R2AlCl←Sb(SiMe3)3 (R = Et (5), t-Bu (6)). The solid-state structures of 2, 6, and 7 were determined by single-crystal X-ray diffraction.