Six derivatives of titanocene have been prepared by reacting Cp~2TiCl~2 with substituted salicylic acid in the presence of water. The complexes were characterized by elemental analysis, IR and ^1H NMR spectroscopy. spectroscopic data suggest that, for complexes Ⅰ～ Ⅳ, the oxygens of the hydroxyl and carboxyls in the ligands are bound to Ti to form six-membered cyclic compounds. However, the 5- nitrosalicylato ligand in complex Ⅴ can only be regarded as a monodentate one. Based on the UV-vis spectrum, the mechanism of the formation of these complexes is proposed as follows: first, Cp~2TiCl~2 reacts with water to form its hydrate, Then the hydrate interacts with substituted salicylic acids in the organic phase to form an intermediate. Finally, the final complex is formed via the intermediates.

Key words: TITANIUM COMPLEX, METALLOCENES, WATER, SALICYLIC ACID, ELEMENTAL ANALYSIS, PROTON MAGNETIC RESONANCE SPECTROMETRY, STRUCTURE CHARACTERISTICS, REACTION MECHANISM