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

Author

Lee Cjin Nong, Chong Siow Hwei, Li Chuan Zhao, Wang Cun, Martin van Meurs, Zhu Yinghuai, Effendi Widjaja, Jozel Tan, Narayan S. Hosmane, and John A. Maguire

Subjects
Ethylene, Ligand, Organic Chemistry, Tantalum, chemistry.chemical_element, Characterization (materials science), Catalysis, Inorganic Chemistry, chemistry.chemical_compound, Polymerization, chemistry, Polymer chemistry, Carborane, Physical and Theoretical Chemistry
Abstract

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.

Published
2008

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