MATRIX-ISOLATION SPECTROSCOPIC STUDIES OF HYDROGEN-BONDED COMPLEXES OF TITANOCENE DIHALIDES WITH HCL

The matrix isolation technique has been combined with infrared spectroscopy to characterize the interaction between Cp2TiF2 and Cp2TiCl2, and HCl. Isolated 1/1 complexes were observed for each pair of reactants; the Cp2TiF2.HCl complex was characterized by a red shift of the HCl stretching mode to 2440 cm-1 and a dramatic broadening of this absorption. In addition, strongly perturbed Ti-F stretching modes were observed near 536 and 556 cm-1. The spectral data collectively indicate formation of hydrogen-bonded complexes, from the HCl subunit to both of the halogens on the titanocene dihalide in a bidentate structure.