Abstract

NUNES, Giovana G. et al. New titanium(IV) and vanadium(IV) haloalkoxides: synthetic route and structural characterisation. J. Braz. Chem. Soc. [online]. 2003, vol.14, n.6, pp. 922-929. ISSN 0103-5053.  http://dx.doi.org/10.1590/S0103-50532003000600009.

The novel binuclear titanium(IV) complex [{TiCl(OPrⁱ)₂(HOPrⁱ )}₂(m-OPrⁱ)₂], 1, and the first mononuclear vanadyl(IV) chloroalcoholate [VCl(O)(HOPrⁱ)₄]Cl, 2, have been prepared from 2:1:1 mixtures of [Ti(OPrⁱ)₄], KOPrⁱ and VCl₃. Products were characterised by elemental analysis, FTIR, EPR, NMR and electronic spectroscopies, magnetic susceptibility measurements and single crystal X-ray diffractometry. A third product was found to be polynuclear and to contain both titanium and vanadium. Semi-empirical quantum-mechanical calculations were carried out for the evaluation of the electronic structure of 1.

Keywords : titanium(IV); vanadium(IV); alkoxides; binuclear.