Preparation and Characterization of Poly Dentate Amidic Ligand type NNSS and Complexes with Co(II), Ni(II) , Cu(II) and Biological Activity

Abstract

A multi-dental amide ligand of the NNSS type consisting of nitrogen and sulfur donor atoms was prepared through one step, which is the reaction between one equivalent of hydrazine and another of sulfuric acetic acid. Coordination complexes were prepared by reacting the resulting ligand with a number of aqueous solutions of appropriate amounts of elemental chlorides. Transitivity of cobalt, nickel, and divalent copper in ethanol as a reaction medium, with a ratio (ligand: metal) equal to (1:1), The prepared compounds were characterized by the infrared spectrum technology , the visible ultraviolet spectrum and C.H.N analysis, in addition to the ¹H-NMR for ligand only and  magnetic susceptibility , molar conductivity of the prepared complexes were shown to form  octahedral  for these complexes. Finally, a biological (bacterial) study was conducted for ligand  and its complexes through Using two types of positive and negative bacteria concentrations of 250 ppm and 500 ppm, solutions of the complexes sensitivity to the two types of bacteria, while Ligand  solutions are did not  effective at both concentrations.