The formation of proton and alkali metal complexes with ligands of biological interest in aqueous solution. Thermodynamics of Li+, Na+ and K+-dicarboxylate complex formation |
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Authors: | Pier G. Daniele Carmelo Rigano Silvio Sammartano |
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Affiliation: | Istituto di Analisi Chimica Strumentale, Università di Torino, 10125 Torino Italy;Seminario Matematico, Università di Catania, 95125 Catania Italy;Istituto di Chimica Analitica, Università di Messina, 98100 Messina Italy |
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Abstract: | The formation and stability of Li+, Na+ and K+ complexes with oxalate, malonate, succinate, maleate, DL-malate and phthalate were studied potentiometrically at various ionic strengths. From the data thus obtained, as well as from several literature data on the protonation of the above-mentioned ligands in various ionic media and at various temperatures, the dependence of Na+ and K+ complex formation on temperature was determined. The dependence on ionic strength, both for the protonation and the complex formation, is also discussed. |
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