Synthesis and characterization of new heteroleptic derivatives of titanium(IV) derived from 2-hydroxy-4-methoxy-benzophenone : A new precursors for the synthesis of nano sized titania

Materials Chemistry Division, School of Advanced Sciences, VIT University, Vellore-632 014, Tamilnadu, India E-mail : madhveshpathak@vit.ac.in Department of Advanced Materials Engineering for Information and Electronics, College of Engineering, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea E-mail : kjkim@khu.ac.kr A few new titanium(IV) complexes have been synthesized by the reaction among precursor (Bp)2Ti(OPri)2 with different alkoxyalkanols and phenols/substituted phenols in 1 : 1 : 1 molar ratios in boiling toluene as mono nuclear heteroleptic titanium complexes of the type [(Bp)2Ti(L1OR)(L2X)] (3a-c) (where Bp = 2-hydroxy-4-methoxy-benzophenone, L1 = -O-CH2 -CH2 -; R = CH3 , C2H5 ; L2 = phenol, X = H or OCH3 ). The newly prepared complexes were characterized by various physico-chemical techniques such as elemental analysis, mass, UV, FTIR and NMR (1H and 13C). The mass spectra of the newly synthesized derivatives indicate their monomeric nature. Based on spectral studies cis hexacoordinated geometry around titanium(IV) has been proposed. By employing sol-gel techniques to all the molecules, nano sized titania was produced at 600 ºC. Powder XRD analysis confirmed the formation of a mixed phase (anatase and rutile)