Vibrational spectroscopic studies and normal coordinate analyses of TiCl4 donor-acceptor complexes

Abstract

Laser Raman spectra and infrared spectra are reported for TiCl4,2MeCN, TiCl4,2PhCN, TiCl4,2py, TiBr4,2MeCN. For purposes of comparison the Raman spectrum of SnC14,2Ph3P has been recorded and assigned. Analysis of data indicates that a cis octahedral configuration is adopted by the TiC14,2L complexes and a trans configuration by SnCl4,2Ph3P. In addition a new complex, 3TiC14,4cpy, has been prepared and spectral data indicate the ligand bonds through its nitrogen heteroatom. Normal coordinate analyses and Urey-Bradley force constants are reported for TiC14,2MeCN and TiCl4,- 2PhCN.