M. R. Mason, Janna M. Smith, S. Bott
Jun 1, 1993
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Journal
Journal of the American Chemical Society
Abstract
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)