Abstract
Mixed-ligand bivalent transition metal ion complexes with N -ethyl-2-picolinoyl hydrazinecarbothioamide (EPHC) and 1,10-phenanthroline (1,10-phen) have been synthesized. The complexes namely [Cu(EPHC)(1,10-phen)(Cl)H 2 O] (1), [Ni(EPHC)(1,10-phen)(Cl)H 2 O] (2), [Mn(EPHC)(1,10-phen)(Cl)H 2 O] (3) and [Co(EPHC)(1,10-phen)(Cl)H 2 O] (4) were characterized by elemental analysis, spectral (IR, 1 H NMR and UV-Vis) and magnetic moment measurements. The magnetic and spectral data indicates octahedral structure for all complexes. Metal complexes have been modeled using parameterized PM3 semi-empirical method. The free ligand and its M(II)-chelates have been screened for their antimicrobial activities. The antibacterial screening demonstrated that, the Cu(II) complex have the maximum and broad activities among the investigated complexes.
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