Abstract
A series of Co(II), Ni(II) and Cu(II) complexes have been synthesized by template condensation of 2,6-diformyl-4-methylphenol and 3-substituted-4-amino-5-hydrazino-1,2,4-triazole with CoCl2·6H2O, NiCl2·6H2O and CuCl2·2H2O chlorides in 2 + 2+2 molar ratio in ethanol. These complexes were characterized by elemental analyses, magnetic susceptibility, molar conductance, spectral (IR, Uv-Vis, ESR, 1H NMR and FAB-mass), thermal, fluorescence and solid-state DC electrical conductivity studies. The observed molar conductance values indicate that they are non-electrolytes. Elemental analyses suggest the complexes to have 2:1 stoichiometry of the type [M2LX2] 2H2O (M = Co(II) & Cu(II), L = LI-LIV and X = Cl) and [Ni2LX22H2O] 2H2O. The solid state DC electrical conductivity showed that the complexes were semiconducting. All the Schiff bases and their Co(II), Ni(II) and Cu(II) complexes were evaluated for their microbiological properties and some compounds showed promising results.
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