Vibrational spectra of 1 : 1-adducts of phosphine, methylphosphine, dimethylphosphine, and trimethylphosphine with titanium tetrachloride

Abstract

The vibrational spectra of the title compounds are discussed in terms of their probable shapes. Cryoscopic molecular weight data taken in conjunction with the spectroscopic data show the adduct TiCl₄,Me₃P to be monomeric in benzene. It is probable that for TiCl₄,Me₃P the structure is based on a trigonal-bipyramidal distribution with axial trimethylphosphine. With the other species the phosphine ligand is probably in an equatorial position. Matrix-isolation Raman studies on TiCl₄,PH₃ in tetramethylsilane are reported.