Synthesis, reactions and physicochemical characterization of some new mixed ligand complexes of titanium(IV) containing cyclopentadienyl and Schiff base moieties

Synthetic Inorganic and Metallo-organic Research Laboratory, Department of Chemistry,
University of Allahabad, Allahahad-211 002, Utter Pradesh, India
E-mail : rajalkoxy@yahoo.com
Manuscript received 26 October 2009, revised 14 December 2010, accepted 12 January 2011

The reactions of titanium(IV) chloride with salicylidcne-2-aminopyridine (sapll) and alkyl xanthate (KS₂COR) In the 1 : 1 and 1 : 2 molar ratio(s) yield complexes of the type [(μ-Cl)₂ TI₂(CI)₄(sup) ₂] (1), ƞ⁵-C⁵11⁵)"' Ti₂(μ.-CI₂(TJ2- S2COR)2] (2) (where R = C6n13) and ((CI)2Ti(sap)2) (3) respectively. The complex 2 has been further treated with sodium salts of Schiff base (derived from isatin and aniline) and tetraisopropoxyaluminate in equimolar ratio to produce mixed ligand complexes of the type [{ƞ⁵-c^₅H₅)2 Ti(ƞ²-S2COR)(sb)) (4) and [{ƞ⁵-C₅11₅)2 Ti(ƞ²-S₂COR)(μ-Oprⁱ)2{AI(Oprⁱ}J (5) respectively. All these complexes have been characterized by elemental analysis (Ti, Cl, C, II, N and S) und SJICC· troscopic data [UV-visible, IR, NMR (¹H and ¹³C, FAB-MS] and PXRD as well as thermogravimetric analysis.