Preparation , Characterization and Radiolysis of Copper(II) Complexes Containing Mixed Ligand

Abstract

Complexes of the type [Cu(B`SCH)(LH)]CO3 and [Cu(B`SC)(L)] have been prepared
in neutral and basic medium, respectively {where B`SCH= benzoin semicarbazone,
B`SC=deprotonated B`SCH ligand, AH= one of the substituted salicylic acid : salicylic acid
(A1H), 2-acetylsalicylic acid (A2H), 3,5-dinitrosalicylic acid (A3H), 5-aminosalicylic acid
(A4H) or 5-sulphosalicylic acid (A5H), A= deprotonated AH ligand}. The resulted
complexes have been characterized physico-chemically.
The effect of gamma rays have been studied on these complexes under conditions
where the hydroxyl radicals were scavenged by sodium formate solution and in presence of
nitrogen gas. The electronic spectral data and molar conductivities indicated that copper (II)
ion may be reduced to copper (I) and presence of charge transfer between the metal ion and
the ligands in some complexes. In addition some complexes have been completely
decomposed and some of them polymerized while the others did not affected during the
selected time of irradiation.