Alkoxyalkanol and Diol Modified Titanium Tetraisopropoxide: Synthesis and Characterization of Some Novel Precursors for Titania

Abstract

Titanium complexes of the type [(OPrⁱ)_4-nTi(OC₂H₄OR)_n], [(acac)₂Ti(O-G-O] and [(acac)₂Ti(OPrⁱ)(OCH₂CH₂SH)] were synthesized from stoichiometric reactions between titanium tetraisopropoxide [(Ti(OPrⁱ)₄, TPT] and alkoxyalkanols {HOCH₂CH₂OR} in 1:1 to 1:4 molar ratios, where R = Et and n-Bu and by the interaction of the precursor [(acac)₂Ti(OR)₂] with different diols and thiol in 1:1 molar ratio, where G = (CH₂)₂, (CH₂)₅ and C(CH₃)₂CH₂CH(CH₃), R = isoprop. The reactions have been carried out in refluxing benzene under anhydrous conditions to yield mononuclear derivatives. All these compounds were purified by distillation under reduced pressure. On the basis of elemental analysis, IR and NMR (¹H and ¹³C) spectral studies tetrahedral as well as a cis octahedral geometry around Ti(IV) is proposed.