Thermodynamics of mixed-ligand complex formation of copper(II) ethylenediaminetetraacetate with amino acids in solution |
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Authors: | M A Bazanova D F Pyreu E V Kozlovskii |
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Institution: | 1. Ivanovo State University, Ermak 39, Ivanovo, 153025, Russia
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Abstract: | The mixed-ligand complex formation in the systems Cu2+–Edta4?–L (L = His, Lys, Orn, Arg, Im) has been calorimetrically, pH-potentiometrically, and spectrophotometrically studied in aqueous solution at 298.15 K and the ionic strength of I = 0.5 (KNO3). The thermodynamic parameters of formation of the CuEdtaL, CuEdtaHL, and (CuEdta)2L complexes have been determined. The probable coordination mode for the complexone and the ancillary ligand in the mixed-ligand complexes was discussed. |
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