5-Sulfosalicylato titanocene complex is soluble and stable in water. The composition of complex was determined by the methods of UV-vis and the isomolar series. The structure of the aqueous complex was inferred by an insoluble complex 1, which is characterized by elemental analysis, IR and TG analysis. The results show that the carboxyl in 5- sulfosalicylic acid acts as a bidentate ligand and coordinates to Ti to form a tetratomic cyclic compound. Furthermore, eight derivatives of titanocene were synthesized by the reaction of 5-sulfosalicylato water- soluble complex of titanocene with aromatic acid. These compounds were characterized by elemental analysis, IR and ~1H NMR spectra. Spectroscopic data suggest that, for complexes 2～9, the carboxyl of each aromatic acid coordinates to Ti as a monodentate ligand and the ligand of 5-sulfosalicylic acid is not found in their structures.

Key words: METALLOCENES, AROMATIC CARBOXYLIC ACID, ELEMENTAL ANALYSIS, IR, STRUCTURE CHARACTERISTICS, TITANIUM COMPLEX