SYNTHESIS AND CHARACTERIZATION OF SOME MONOFUNCTIONAL BIDENTATE SCHIFF-BASES DERIVED FROM CINNAMALDEHYDE AND (S)UNDER-BAR-TRIAZOLES, AND THEIR CO(II), NI(II), CU(II) AND ZN(II) COMPLEXES

A new series of complexes of Co(II), Ni(II), Cu(II) and Zn (II) with S chiff bases derived from the. condensation of cinnamaldehyde with 4-am ino-5-mercapto-s-triazole and 4-amino-5-mercapto-3-methyl-s-triazole h ave been synthesized. The complexes are characterized by elemental ana lyses, H-1 NMR, IR, electronic spectra and magnetic susceptibility mea surements. The spectroscopic studies reveal that Schiff base acts as b identate ligand with N, S donor set. Thermal studies of the complexes are also reported.