Reaction of titanocene dichloride with substituted salicylic acid in presence of benzoylacetone

The benzoylacetone is presented: three titanocene complexes are prepared in two-phase medium respectively. The complexes are characterized by elemental analysis, IR and ()~1H NMR spectra. The results show that substituted salicylic acid acts as a bidentate ligand and coordinates with Ti to form a cyclic compound. Based on the UV-vis spectrum, the mechanism of reaction is proposed as follows: first, benzoylacetone and Cp_2TiCl_2 in the aqueous phase form an aqueous-complex——benzoylacetonato titanocene complex. And the aqueous-complex undergoes a ligand exchange with thiosalicylic acid in the organic phase to form the final complex, benzoylacetone only acts as a transitional ligand in the reaction.