الفهرس | Only 14 pages are availabe for public view |
Abstract Chapter (1) A literature survey includes four parts. 1-history occurrence of zirconium and hafnium elements, their abundance 2-the chemistry of zirconium and hafnium elements, their aqueous chemistry,coordination chemistry and metal clusters. 3-the thiosemi carbazomes, their structure, their coordination character and their importance 4-delydroacetic acid, and its complexing mode Chapter(2) Describe the experimental techniques including five parts. 1-the materials 2-the instruments used 3-preparation of the organic ligands 4-preparation of the solid complexes 5-preparation of the solutions Chapter(3) This chapter includes the results obtained and their discussions and it divides into four parts 1-in this chapter the characterization of the chemical structures of the ligands have been described. 2-the results of the obtained solid complexes of zirconium (iv) and hafnium (iv)with; dehydroacetic acid n4 Methylthiosemicarbazone (ha4m),dehydroacetic acid 3-hexamethyleneiminylthiosemicarbazone (dapip),dehydroacetic acid 3-hexamethyleneiminylthiosemicarbazone (dahexim), dehydroacetic acid n4-ethylthiosemicarbazone (dh4et), dehydroacedticocid (n4-diethylthiosemicarbazone(da4det)and dehydroacetic acid n4-phenylthiosemicarbazone (da4ph)have been discussed |