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)


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
Publication statusPublished - 2003 Jan 10


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this