Abstract
Formation of ternary mixed-ligand complexes of copper (II) with 16 α-amino acids and α-aminophosphonic acids (APA) with a 1∶1∶1 ratio of initial concentrations has been studied by potentiometric titration at 25‡C and 0.1 M KC1 in aqueous solution. The complexes CupAnBsHq are formed in solution, where A and B are the deprotonated ligands. The stability of the mixed-ligand complexes (log Β) increases and the equilibrium is displaced more towards their formation (δlog K) as the hydrophobic nature of the ligands increases.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 570–575, March, 1991.
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Nabirkina, E.P., Solov'ev, V.P., Raevskii, O.A. et al. Ternary mixed-ligand complexes of copper(II) with α-aminoalkylphosphonic acids and amino acids. Russ Chem Bull 40, 492–496 (1991). https://doi.org/10.1007/BF00957982
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DOI: https://doi.org/10.1007/BF00957982