الملخص

    The study includes the preparation of complexes Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) with Schiff base ligand (HNMBH2) which is derived from the condensation reaction of 2-hydroxybenzohydrazide with 2-Hydroxy-1-naphthalene carboxaldehyde. The properties of which were characterized by infrared, magnetic measurements, molar conductivity measurements, electronic spectra, nuclear magnetic resonance spectra of 1H and13 C, and gas chromatography-mass spectrometry. It is found  that the ligand acts as neutral tridentate to give high-stability mononuclear complexes that have a tetrahedral or square planar structure.