The symmetrical tetra-dentate Schiff base complexes were prepared by the reaction of 2-hydroxy naphthaldehyde and 1,8-diaminonaphthalene in 2:1 molar ratio. The ligand and its complexes with Cu(II), Ni(II), Mn(II) and Zn(II) ions were characterized by elemental analysis, molar conductance, infrared, electronic spectra, cyclic voltammetry, thermal, Magnetic and EPR studies. Furthermore, antibact...
