Synthesis and Characterization of some Metalions (II) Complexes of Poly vinyl alcohol and Studied some Physical Properties

Abstract

Metal complexes of Poly (vinyl alcohol) (PVA-oxi) with the formula [M(PVA- oxi)₂ (NO₃)₂] [M = Fe(II), Co(II) and Ni(II)] and metal complex with formula [M(PVA-oxi)₂Cl₂ ] [M = Cr(II), Mn(II), Hg(II), Zr(II), Zn (II) and Pd(II) were prepared using solution cast method. The atomic absorption, IR, UV-Vs spectroscopic techniques, molar ratio and molar conductance as well as the relative viscosity were characterized. It was found that the prepared complexes are obtained from the ligand reaction with metal ions in a DMF solvent were ratio of metal: ligand (1:2 ) for the complexes of [Co(II), Cr(II), Mn(II), Fe(II), Zr(II),Ni(II)]ions and (1:1) for the complexes of [Zn(II), Pd(II) Hg(II)]ions were obtained. The results showed that the ligand (PVA-oxi) was bidentate ligand coordinated with metal ions through the oxygen atoms of carbonyl and hydroxlic groups of  its chain their octahedralgeometry for [Co(II), Cr(II), Mn(II), Fe(II), Zr(II), Ni(II)] complexes while their tetrahedrongeometry for [Zn(II), Pd(II),  Hg(II)] complexes. The conductivity of the ligand and the prepared complexes were studied, which showed that the connection of the complexes is higher than the ligand and ion Zn (II) had the highest conductivity. Ion Fe(II) showed the lowest conductivity.