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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)59-63
Number of pages5
JournalInorganica Chimica Acta
Volume342
DOIs
Publication statusPublished - 2003 Jan 10

Fingerprint

Tantalum
tantalum
chlorides
Ligands
Atoms
ligands
Chlorine
Energy barriers
Monoamine Oxidase
synthesis
Chelation
Lithium
chlorine
atoms
catalytic activity
Catalyst activity
Ethylene
ethylene
polymerization
lithium

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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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 Jui-Hsien Huang and Wang, {Mei Hua} and Lee, {Ting Yu} and Lee, {Gene Hsiang} and Peng, {Shie Ming}",
year = "2003",
month = "1",
day = "10",
doi = "10.1016/S0020-1693(02)01152-0",
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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 journalArticle

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

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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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