Abstract
Complexation processes occurring in gelatin-immobilized uranyl(VI) hexacyanoferrate(II) matrixsystems on contact with aqueous alkaline (pH 12.0) solutions of 8-quinolinethiol, its 5-chloro, 5-bromo' and 5-methylthio derivatives were studied. Incorporation of the ligand into the inner coordination sphere ofUO22+ is preceded by alkali transformation of gelatin-immobilized (UO2)2[Fe(CN)6] to uranic acid (H2UO4). In the course of complexation in each of the uranyl(VI)-ligand systems studied, only coordination compounds UO2L2 (L- is the deprotonated form of the ligand) are formed.
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