Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (04): 319-323.doi: 10.3866/PKU.WHXB19940407

• ARTICLE • Previous Articles     Next Articles

Spectra Studies of Titanium and Vanadium-Pentadienyl-Carbonyl Compounds

Wang Yue, Liu Ju-Zheng, Jiang Shi-Mei, Liang Ying-Qiu   

  1. Institute of Theoretical Chemistry, Jilin Univeristy, Changchun 130023| Department of Chemsitry, Nanjing Univeristy, Nanjing 210008
  • Received:1992-10-04 Revised:1993-01-15 Published:1994-04-15
  • Contact: Wang Yue

Abstract:

The characterization of a series of carbonyl adducts of open titanocenes, open vanadocenes and half-open vanadocene was studied with IR, EPR and UV-VIS methods. The electronic structures of [2,4-(CH_3)_2C_5H_5]_2VCO, [2,4-(CH_3)_2C_5H_5]_2TiCO and [2,4-(CH_3)_2C_5H_5](C_5H_5)VCO have been calculated by EHMO mehtod. The compar ison between carbonyl adducts of open vanadocene, half-open vanadoce and vanadocene has been carried out and the results show that the properties of half-open vanadoce lie between open vanadoce and vanadocene, and tend to open vanadocene. The bond of vanaium-pentadienyl is stronger than that of vanadium-cyclopentadienyl. The properties of half-open vanadocene are more affected by the pentadienyl ligand than by the cyclopentadienyl ligand.

Key words: Open metallocene, Pentadienyl