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NCUEIR > College of Science > Department of Chemistry > Periodical Articles > Item 987654321/14769

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14769

Title:	Seven-coordinated Tantalum Trichloride Complex Containing Substituted Pyrrolyl Ligand: Synthesis and Characterization of [NC4H3(CH2NMe2)-2]2TaCl3
Authors:	Zhou, Chong-Chin;Huang, Jui-Hsien;Wang, Mei-Hua;Lee, Ting-Yu;Lee, Gene-Hsiang;Peng, Shie-Ming
Contributors:	化學系
Keywords:	Pyrrolyl;Tantalum chloride;Polymerization
Date:	2003-01
Issue Date:	2012-12-10T01:39:29Z
Publisher:	Elsevier
Abstract:	bis[2-(Dimethylaminomethyl)pyrrolyl]tantalum chloride (1) was prepared by treatment of the TaCl5 with 2 equiv. of [2-(dimethylaminomethyl)pyrrolyl]lithium. The solid state structure of 1 shows the seven-coordinated tantalum atom, with a geometry corresponding to a pentagonal bipyramidal structure, in which two chlorine atoms occupy the axial position with the angle of 174.8(2)°. Furthermore, variable-temperature 1H NMR spectra infer the fluxionality of the two chelating pyrrolyl ligands with an estimated energy barrier of 13.8 kcal mol−1. Compound 1 shows no catalytic activity toward ethylene polymerization even activated with MAO.
Relation:	Inorg. Chim. Acta., 342: 59-63
Appears in Collections:	[Department of Chemistry] Periodical Articles

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