Organometallics

Aluminum Alkoxides as Synthons for Methylalumoxane (MAO): Product-Catalyzed Thermal Decomposition of [Me2Al (μ-OCPh3)] 2

SJ Obrey, SG Bott, AR Barron

Index: Obrey, Stephen J.; Bott, Simon G.; Barron, Andrew R. Organometallics, 2001 , vol. 20, # 24 p. 5162 - 5170

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Citation Number: 25

Abstract

The thermal decomposition of [Me2Al (μ-OCPh3)] 2 to yield Ph3CMe and MAO is catalyzed by the addition of AlMe3; however, the reaction is also catalyzed by the MAO product. The overall reaction rate takes the following form: rate= k TMA [{Me2Al (μ-OCPh3)} 2][AlMe3]+ k MAO [{Me2Al (μ-OCPh3)} 2][MAO], where k MAO≫ k TMA. The Δ H⧧ for the AlMe3-and MAO-catalyzed reactions are similar; however, on the basis of the relative rates of reaction ...

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