The synthesis, characterization and biological activity of Cu(II) and Ni(II) complexes derived from tridentate Schiff base ligand 3-hydroxy-4-(pyridine-2-yl methylene amino) benzoic acid (HL) was obtained by the condensation of 2-Pyridine carboxaldehyde with 4-amino 3-hydroxy benzoic acid has been described. The complexes were characterized based on elemental analyses, molar conductivity measur...

This study describes the effects of the substituents on electrochemical behavior and antioxidant activity of the three tetradentate Schiff bases, containing ethane-1,2- diamine, propane-1,3- diamine and butan-1,4- diamine as the amine part and salicylaldehyde, and corresponding Cd(II) complexes. Cyclic voltammograms of these compounds were recorded in dimethylsulfoxide and 0.1 M sodium perchlor...

We have prepared supramolecular systems of chiral Schiff base Ni(II), Cu(II), Zn(II) complexes and colloidal gold nanoparticles (AuNP) of 10 nm diameters. They demonstrated that direct adsorption of chiral Schiff base metal complex on the surface of AuNP owing to observation of clear induced CD spectra for the first time. We observed and discussed induced CD bands on AuNP from chiral Schiff bas...

nickel (ii) and copper (ii) complexes of highly unsymmetrical tetradentate schiff base have been synthesized by the template reaction of half-units n-(1-hydroxy-2-acetonaphtone)-1-amino-2-phenyleneimine (hl) and n-(2-hydroxyacetophenone)-1-amino-2-phenyleneimine (hl1) with the glyoxalphenylhydrazone. the complexes have been characterized by elemental analyses, conductance, ir, 1h nmr and uv spe...

In this paper, two double helical dinuclear copper(II) complexes of bis-N,O-bidentate Schiff base ligands bis(3-methoxy-N-salicylidene-4,4'-diaminodiphenyl)sulfone (L1) and bis(5-bromo-N-salicylidene-4,4'-diaminodiphenyl)sulfone (L2) were prepared and characterized by elemental analyses (CHN), as well as thermal analysis. Elemental analyses (CHN) suggested that the reaction between ligands and ...

Metal complexes of Cu (II), Co (II), Ni (II) and Zn (II) of Schiff based derived from 5-bromo-2hydroxybenzaldehyde and 4-nitobenzenesulfonamide have been prepared and characterized on the basis of physical characteristics, micro-analytical data, H NMR, FTIR spectrum and electronic data. The spectrum data 1 exhibit coordination of Schiff base with metal through imine nitrogen and oxygen atom and...

The Schiff base complexes of Co(II), Ni(II) Cu(II) and Zn(II) have been synthesized from 4pyridine carboxaldehyde with 4-aminopyridine. They have been characterized by elemental analysis, molar conductance, molecular weight determination, IR, XRD and SEM. The metal in the Schiff base complex is hexa coordinated which binds through pyridine nitrogen, azomethine nitrogen and nitrate units of meta...

New hetero-binuclear Hg-Cu Schiff base complexes were prepared by reaction of 2,2'-[1,1'-(2,2-‎dimethylpropane-1,3-diyldinitrilo)-diethyldyne]diphenolato}copper(II) (CuL1) and 6,6'-X-2,2'-[(2,2-‎dimethylpropane-1,3-diyl)bis(nitrilomethanylylidene)]diphenolato copper(II) [(X = ethoxy (CuL2) and ‎methoxy (CuL3)], with HgCl2 to give [Cu(L1)HgCl2] (1), [Cu(L2)HgCl2] (2), and [Cu(L3)HgCl2] (3), ‎res...

Schiff base has been prepared by the condensation of 2-naphthylamine (NA) with 5bromosalicylaldehyde (BSA). The ligand (NABSA) was isolated and characterized. Metal complexes have been synthesized by the interaction of NABSA with metal ions viz. Co(II), Ni (II), and Cu(II) in 1:2 molar ratio respectively. These complexes have been characterized by FT-IR, electronic spectroscopy, conductance mea...