Synthèse, caractérisation structurale et analytique de complexes métalliques et ligands dérivés de l’acide déhydroacétique

Abstract

SYNTHESIS, STRUCTURAL AND ANALYTICAL CHARACTERIZATION OF COMPLEXES AND LIGANDS DERIVATIVE OF DEHYDROACETIC ACID A part of the present work realized in the laboratory L.E.M.M.C at G.P departement of U.F.A.S, within the framework of the synthesis and study of new complexes a lot of activity. Dehydroacetic acid or D.H.A is considerate like β- diketone, react with transition metals to give the following complexes ML2, ML2.2H2O and ML3. H2O where L is the ligand. The crystallographic structures of 4 complexes are described. Schiff base and thiosemicarbazone derivative of dehydroacetic acid react with copper (II), nickel (II), cobalt (II) and cadmium (II) to give a mononuclear and binuclear complexes. the structures of all the compounds are determined using IR , UV-Vis methods as well as proton NMR. Finally, a theoric study of the electronic structure of the complexe Cu(DHA)2.2DMSO had been realised by use the DFT methode.