The ligand of 2,2`diamino-N-phenyl hydrazo benzene (L) has been prepared from the reaction of ortho amino hydrazo benzene with ortho amino phenyl thiol in mole ratio1:1and characterized by elemental analysis (C, H, N), IR, UV-Vis. The complexes of bivalent (Co, Ni, Cu, Zn, Pd, Cd, Hg and Pb)ions and trivalent (Cr)ion have been prepared and characterized too. The structural diagnosis were established by IR, UV-Visible spectrum, Conductivities, atomic absorption and magnetic susceptibility. The complexes showed octahedral geometry around the metal ion with the (N,N,N) ligand coordinated in tridentate mode except pd complex showed trigonal bibyramidal. , kf, Єmax for the complexes were estimated too. for Cocomplex was calculated. The study of biological activity of the ligand (L) and its complexes showed various activity toward Streptococcus pyogenes, Staphylococcus aureus, E. coli, Pseudomonas aeruginosa and Candida albicans.
Atomic absorption and molar ratio Spectroscopic evidence showed that the binding of metal ions were through the azide(μ-1,1-N 3 ) Triazonine (3,5 -N 3 ) and carboxyl moieties , resulting in a six -coordinating metal ions (Cr(III),Mn(II),Co(II),Ni(II) and Cu(II) ) .The VO(II) , Zn(II) ,Cd(II), andHg(II) were coordinated through azido (μ-1,1-N 3 ) , triazonine(3,5-N 3 ) only forming square pyramidal for VO(II) and tetrahedral geometry for Zn(II) , Cd(II) ,and Hg(II)β, ́ for Ni(II) , Cr(III) complexes were calculated too . The molar ratio and metal estimation showed , the ratio of L-AZ to metal ions was (10:1) ; (M/L) .
The ligand N'-[2-(2-Phenyl hydrazinyl) Phenyl] benzothiohydrazide (L) has been prepared from the reaction of ortho amino hydrazo benzene with phenyl isothiocyanate in mole ratio (1:1) and characterized by elemental analysis (C,H,N), H 1 , 13 C-NMR, IR and Uv-Vis Spectroscopic methods. The complexes of the bivalent ions (Co (II), Ni (II), Cu (II), Cd (II) and Hg (II)) have been prepared and characterized. The structural diagnosis were established by IR, Uv-Visible spectrum, conductivities, atomic absorption and magnetic susceptibility. Chloride ion content was also evaluated by (Mohr method) .The suggested geometry of the complexes were octahedral around the metal ion with the (N,N,S) ligand coordinated in tridentate mode. , K f , max for the complexes were estimated too. for Co-complex was calculated. In addition biological activity of the ligand and complexes against two selected types of bacteria were also examined. Some of the complexes exhibited a good anti bacterial activities.
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