New method in synthesis of nano uranyl(VI) Schiff base complexes: Characterization and electrochemical studies

다국어 초록 (Multilingual Abstract)

This study presents a new method in synthesis of nano uranyl Schiff base complexes. In thismethod slowaddition of dilute uranyl(VI) acetate solution to dilute Schiff base solution following the reflux for about24 h, yields nano uranyl(VI) Schiff base complexes. Characterization of Schiff base ligands and nanouranyl complexes has been done using 1H NMR, IR, UV–vis spectroscopy, elemental analysis. Schiff baseligands were synthesized by the condensation of one mole 3,4-diaminobenzophenone and two molessalicylaldehyde or substituted salicylaldehyde (3-OMe, 4-OMe, 5-OMe, 5-Br, 5-Cl). The electrochemicalproperties of the uranyl(IV) complexes were investigated by cyclic voltammetry. A good correlation wasobserved between the oxidation potentials and the electron withdrawing character of the substituentson the Schiff base ligands, according to the following trend: 5-MeO < H < 5-Br 5-Cl. Also the effect ofthe position of the substituted groups of Schiff base on the anodic potentials is as follows: 5-OMe < 3-OMe < 4-OMe.

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