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 | |
| Publication status | Published - 2003 Jan 10 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
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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 journal › Article
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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U2 - 10.1016/S0020-1693(02)01152-0
DO - 10.1016/S0020-1693(02)01152-0
M3 - Article
VL - 342
SP - 59
EP - 63
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
ER -