Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand: Synthesis and characterization of [NC4H3(CH2NMe2)-2]2 TaCl3

Chong Chin Zhou; Jui Hsien Huang; Mei Hua Wang; Ting Yu Lee; Gene Hsiang Lee; Shie Ming Peng

doi:10.1016/S0020-1693(02)01152-0

Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand: Synthesis and characterization of [NC₄H₃(CH₂NMe₂)-2]₂ TaCl₃

Chong Chin Zhou, Jui Hsien Huang, Mei Hua Wang, Ting Yu Lee, Gene Hsiang Lee, Shie Ming Peng

Department of Chemistry

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5 Citations (Scopus)

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.

Original language	English
Pages (from-to)	59-63
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	342
DOIs	https://doi.org/10.1016/S0020-1693(02)01152-0
Publication status	Published - 2003 Jan 10

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All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Cite this

Zhou, C. C., Huang, J. H., Wang, M. H., Lee, T. Y., Lee, G. H., & Peng, S. M. (2003). Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand: Synthesis and characterization of [NC₄H₃(CH₂NMe₂)-2]₂ TaCl₃. Inorganica Chimica Acta, 342, 59-63. https://doi.org/10.1016/S0020-1693(02)01152-0

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title = "Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand: Synthesis and characterization of [NC4H3(CH2NMe2)-2]2 TaCl3",

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.",

author = "Zhou, {Chong Chin} and Huang, {Jui Hsien} and Wang, {Mei Hua} and Lee, {Ting Yu} and Lee, {Gene Hsiang} and Peng, {Shie Ming}",

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T1 - Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand

T2 - Synthesis and characterization of [NC4H3(CH2NMe2)-2]2 TaCl3

AU - Zhou, Chong Chin

AU - Huang, Jui Hsien

AU - Wang, Mei Hua

AU - Lee, Ting Yu

AU - Lee, Gene Hsiang

AU - Peng, Shie Ming

PY - 2003/1/10

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N2 - 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.

AB - 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.

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10.1016/S0020-1693(02)01152-0