Titanocene complexes of the N-methyl and N-phenyl-1,3-thiazoline-2-thione-4,5-dithiolates and 4,5-diselenolate ligands

Cp(2)Ti(dithiolene) and Cp(2)Ti(diselenolene) complexes containing the N-methyl-1,3-thiazoline-2-thione-4,5- dithiolate ligand (Me-thiazdt), the N-phenyl-1,3-thiazoline-2-thione-4,5-dithiolate ligand (Ph-thiazdt) and the N-methyl-1,3-thiazoline-2-thione-4,5-diselenolate ligand (Me-thiazds) have been synthesized. Three approaches have been developed in order to generate the dithiolene or the diselenolene ligands which were reacted with Cp(2)TiCl(2) to form the corresponding heteroleptic complexes. Their Xray crystal structures, UV-Vis absorption spectra as well as their redox properties, determined by cyclic voltammetry have been investigated and discussed. Variable-temperature (1)H NMR experiments have been performed in order to determine the activation energies of the chelate ring inversion. (c) 2008 Elsevier B. V. All rights reserved.