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Abstract Thethesiscomprises three chapters. The first is concerned with the raturesurveyof the chemistry of Schiff base compounds mainly ,mstructural,applied and coordination chemistry views. Thesecondchapter is devoted to the experimental part. The thesisof both the ligands and their transition metal complexes described.The selected Schiff base ligands for the present lesare those prepared from salicylaldehyde and three diamines lylenediaminpe,ropylenediamine and o-phenylenediamine). The yncal data of the ligands and their complexes are given. The ifldngprocedure and the standardization of the instruments used (lr,uv-visiblee,sr, magnetic susceptibility, electrical conductivity, analysis,dielectric constant and pH measurements) and the paratlonof the solutions are explained. Thethirdchapter is concerned with the results and discussion and dividedinto nine parts. The prepared complexes were found to t in the stoichiometries 1:1 and 1:2 (M:L). While the reaction of -bis(salicylidene)-o-phenylenediamine with cobalt(II) chloride orded C04L2C1.4H20 where cobalt exists in different oxidation tes, Thefirstpart deals with the infrared spectra of the free organic Impoundasnd their metal complexes assigning the position of the ndamental groups, mainly -OH and C=N. The hydrogen bond was rovedto exist. The M-N=C bond lengths are calculated. The uencewasfound to be affected by the electrostatic field property d thechainlength of the ligand. Such trend in case of the mixed talcomplexesis attributed to geometry changes and flexibility rtors, Theelectronicabsorption spectral properties of the Co(ll), Ni(ll) , (I1),Pd(IIP),t(II),U02(II) and some of the mixed metal complexes givenin the second part. All the cobalt and copper complexes refoundto exhibit an octahedral configuration while, palladium d platinumcomplexes exhibit a square planar stereochemistry. |