Mono- and bis(cyclopentadienyl)titanium(IV)/zirconium(IV) derivatives with substituted mercapto triazines

The reactions of bis(cyclopentadienyl)titanium(IV)/zirconium(IV) dichloride and mono(cyclopentadienyl)titanium(IV) trichloride with 4-amino-3- mercapto-6-methyl-5-oxo-1,2,4-triazine and its schiff bases (derived from benzaldehyde, 2-chlorobenzaldehyde, anisaldehyde, salicylaldehyde, 2- hydroxynapthaldehyde and 2-hydroxyacetophenone), have been studied in anhydrous tetrahydrofuran or dichloromethane in the absence and presence of amine in different molar ratios. Tentative structures have been proposed for the products based on elemental analyses, electrical conductance, magnetic moments and spectral (electronic, infrared and ¹H NMR) data. Proton NMR spectra indicate that there is rapid rotation of the cyclopentadienyl ring around the metal - ring axis on the NMR time scale at 20 °C.