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Synthesis and thermogravimetric investigation of the complexes of general formula TiCl3LnL'm (n + m = 3)

M. Kohútová and M. Zikmund

Institute of Inorganic Chemistry, Slovak Academy of Sciences, CS-842 36 Bratislava


Abstract: The trichlorotitanium(III) complexes of the composition TiCl3LnL'm, where n + m = 3; L: tetrahydrofuran, n = 1 or 2; L: acetonitrile, n = 1; L': pyridine, aliphatic alcohol (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-methyl-1-propanol), m = 1 or 2, were prepared. Electronic spectra and magnetic susceptibility measurement data indicate that the title complexes are monomeric with distorted tetragonal bipyramidal coordination of the central Ti(III) atom. Studying their thermal behaviour in the temperature range 20-400°C the formation of two types of intermediates was observed in dependence on the neutral ligand (L') present. When L' is pyridine, the molecular ligands of lower donor numbers (C4H8O, CH3CN) are released and when aliphatic alcohols are present then alcoholysis and simultaneous escape of HCl, alcohol, and molecular ligand take place.

Full paper in Portable Document Format: 453a331.pdf


Chemical Papers 45 (3) 331–340 (1991)

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