Synthesis, Characterization, and Polymerization of a Neutral Tantalacarborane Sandwich Complex Derived from a Pentaanionic Exo-Polyhedrally Linked Bis(C2B10-carborane) Ligand

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• 作者：Zhu Yinghuai ; Lee Cjin Nong ; Li Chuan Zhao ; Effendi Widjaja ; Chong Siow Hwei ; Wang Cun ; Jozel Tan ; Martin Van Meurs ; Narayan S. Hosmane ; John A. Maguire
• 刊名：Organometallics
• 出版年：2009
• 出版时间：January 12, 2009
• 年：2009
• 卷：28
• 期：1
• 页码：60-64
• 全文大小：266K
• 年卷期：v.28,no.1(January 12, 2009)
• ISSN：1520-6041

文摘

Tetramethyldisilazane-bridged closo-carborane compounds, [(closo-1-R-1,2-C₂B₁₀H₁₀)Me₂Si]₂NH (R = Me (1), Ph (2)), and their tantalum complexes, [(closo-2-R-2,3-C₂B₁₀H₁₀)Me₂Si]₂N]Ta(V) (R = Me (3), Ph (4)), have been prepared and characterized. Compounds 3 and 4 were found to be active catalysts for the polymerization of ethylene in the presence of the cocatalyst MAO to produce two morphologically different polyethylenes with high molecular weight.