Hydrolysis of tri-tert-butylaluminum: the first structural characterization of alkylalumoxanes [(R2Al)2O]n and (RAlO)n
Hydrolysis of tri-tert-butylaluminum: the first structural characterization of alkylalumoxanes [(R2Al)2O]n and (RAlO)n
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DOI：
10.1021/ja00065a005
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发表时间：
1993-06
影响因子：
15
通讯作者：
M. R. Mason;Janna M. Smith;S. Bott;A. Barron
中科院分区：
文献类型：
--
作者：
M. R. Mason;Janna M. Smith;S. Bott;A. Barron
已经制备了叔丁基取代的铝氧烷，并通过多核磁共振光谱、质谱和X射线晶体学表征。Al（tBu）3在戊烷中的低温（-78 ℃）水解导致形成作为主要产物的三聚氢氧化物[（tBu）2 Al（μ-OH）] 3（1）。Al（tBu）3在甲苯中的水合盐水解，随后反应混合物的热分解产生四聚铝氧烷[（tBu）2 Al{μ-OAl（tBu）2 }] 2（2）和八聚铝氧烷[（tBu）Al（μ 3 -O）] 9（5）。
tert-Butyl-substituted alumoxanes have been prepared and characterized by multinuclear magnetic resonance spectroscopy, mass spectrometry, and X-ray crystallography. The low-temperature (-78 o C) hydrolysis of Al( t Bu) 3 in pentane results in the formation of the trimeric hydroxide [( t Bu) 2 Al(μ-OH)] 3 (1) as the major product. Hydrated salt hydrolysis of Al( t Bu) 3 in toluene followed by thermolysis of the reaction mixture yields the tetrameric alumoxane [( t Bu) 2 Al{μ-OAl( t Bu) 2 }] 2 (2) and the octameric alumoxane [( t Bu)Al(μ 3 -O)] 9 (5)