Author : Allha . M . Ali, Abid
Preparation ,characterization and thermodynamic study of som transition metal complexes with new azo azomethen Ligand
journal of kerbala university,
Volume 1, Issue 0, Pages 264-272
The study include preparation of tetradentate azo azomethen ligand type (N2O2).This ligand preparation from condensation reaction between salicylaldehyde derivative containing azo group and o-phenylen diamine compound. This ligand has been identified by the many spectral methods such as floural transform Infrared (FTIR), Ultra violet – visible (Uv – vis.), elemental analysis and melting point measurement. Tetra chelate complexes of above ligand with Cu(II), Ni(II) and Co(II) were prepared. The (matel : ligand) (M:L) molar ratio measured by molar ratio method, and the result ratio was (1:1) for all complexes. These complexes were characterized by above spectral method in addition to atomic absorption spectra, molar conductivity measurement and magnetic susceptibility. The FTIR spectral data showed deprotonnated ligand and coordenated with matel ion. The Uv-vis. and magnetic susceptibility results showed the proposed geometrical shapes were squar planner configuration for all complexes Fig.3 From the physical properties and calculation of thermodenamics parameter explanation this reaction was exothermic and spontaneous.