Labile adducts of TiCl_4 with thionyl chloride structurally characterized at low temperature: a comparison with the zirconium and hafnium analogues, (MCl_4(SOCl_2))_2

摘要

The thermally unstable (decomp. ca. -30 deg C) titanium derivative [TiCl_4(SOCl_2)]_2, prepared from TiCl_4 and SOCl_2, forms three crystalline modifications (I-III) in the temperature range between 220 and 234 K; these modifications differ in the orientation of the SOCl_2 ligand with respect to the titanium-containing fragment within the dinuclear molecule and in the packing modes due to intermolecular S...Cl interactions at distances between 3.25 and 3.82 A.