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

Research output: Contribution to journal › Article › peer-review

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

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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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}",

year = "2003",

month = jan,

day = "10",

doi = "10.1016/S0020-1693(02)01152-0",

language = "English",

volume = "342",

pages = "59--63",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier BV",

}

Seven-coordinated tantalum trichloride complex containing substituted pyrrolyl ligand : Synthesis and characterization of [NC₄H₃(CH₂NMe₂)-2]₂ TaCl₃. / Zhou, Chong Chin; Huang, Jui Hsien; Wang, Mei Hua; Lee, Ting Yu; Lee, Gene Hsiang; Peng, Shie Ming.

In: Inorganica Chimica Acta, Vol. 342, 10.01.2003, p. 59-63.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

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

Y1 - 2003/1/10

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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JO - Inorganica Chimica Acta

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