Synthesis, Characterization and Thermal Studies of Schiff Bases Derived from 2,4-Dihydroxy benzaldehyde and their Complexes with Co(II), Ni (II), Cu(II)

The synthesis characterization of new imine prepared via condensation of 2, 4-Dihydroxy benzaldehyde with 3, 3?-diaminobenzidine. The structure of imine was characterized by elemental analysis FTIR, 1H-NMR, UV- Vis, mass spectroscopic and TG/DSC. The results show an agreement with the proposed structure. Was used to synthesize the complexes of type [M2 (L)] [M= Co (II), Ni (II), Cu (II)] and their complexes were character by methods of spectral anlysis FTIR, UV- Vis, mass spectroscopic, molar conductivity, thermal anlysis was carried out using the DSC knowing if these complexes contain water molecules that are consistent with the central atom and also study some thermodynamic functions of prepared compounds and was included evaluation of magnetic properties of prepared complexes. The results showed that the complexes of Co(II), and Cu(II) have paramagnetic properties and Shape would be tetrahedral, while the complex of nicked (II) have diamagnetic properties. So square planner with four nitrogen and four oxygen atoms from the Schiff base ligand.