Abstract
New polymeric complexes of Co(II), Ni(II), Cu(II), Fe(II), Fe(III), Zn(II), Cd(II) and UO2(II) with 5-(2-hydroxyphenyldiazo)-8-hydroxy-7-quiolinecarboxaldehyde (LH2) have been synthesized and characterized by analytical, thermal, magnetic, infrared, electronic, H-1 NMR, C-13 NMR and EPR spectra data. The infrared spectral data of the metal complexes indicate that LH2 act as bis-bidentate towards the metal ions. The electronic spectral data suggest that Co(II) and Mn(II) complexes are octahedral, while Ni(II) complex is square planar. The complexes of Zn(II) and Cd(II) are tetrahedral. The chelating ligand around the copper was expected to be distorted square planar for Cu(IT). The electronic absorption and a g(\\)/A(\\) value are indicative for the beginning of a tetrahedral distortion. The coupling constants of various coordinated nuclei with copper(II) are estimated From EPR spectrum of copper(II) complex.