Complex formation reactions of Scandium(III), Yttrium(III) and Lanthanum(III) complexes with 8-Hydroxyquinoline
نویسنده
چکیده
This study aims to investigate the nature and types of complexes formed in aqueous solution between 8Hydroxyquinoline (HQ) and the ions of Sc, Y, and La. Potentiometric titration was used to follow the formation of complexes. The coordination compounds formed were studied through the determination of stability constants of these complexes in aqueous solution at 25,0 ± 0,1oC and ionic strength of 0,1 M KNO3. The basicity of the ligand was also assessed by the determination of the dissociation constants of the ligand. All of the constants were determined by computer refinement of pH-volume data using the BEST computer program. Distribution diagrams for the species were drawn showing the concentrations of individual species as a function of pH by the SPE software program.
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