Thermodynamics of the Formation of Mixed Complexes of Nickel(II) Ions with Histidine and Diamines in an Aqueous Solution

Pyreu D. F.; Nikitina M. G.

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Thermodynamics of the Formation of Mixed Complexes of Nickel(II) Ions with Histidine and Diamines in an Aqueous Solution

机译：Thermodynamics of the Formation of Mixed Complexes of Nickel(II) Ions with Histidine and Diamines in an Aqueous Solution

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Calorimetry, spectrophotometry, and pH measurements are used to study the formation of mixed ligand complexes with 1,10-phenanthroline (Phen) and ethylenediamine (En) in Ni(II)-His-Phen(En) systems. The formation of mixed complexes with different stoichiometries is found, and the thermodynamic parameters (log K, Delta(r)G(0), Delta H-r, Delta S-r) of the reactions of their formation at 298.15 K and ionic strength I = 0.5 (KNO3) are calculated. The most likely form of the coordination of the amino acid residue in the composition of the mixed complexes is identified.

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《Russian Journal of Physical Chemistry》 |2021年第11期|2238-2245|共8页
作者
Pyreu D. F.; Nikitina M. G.;
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Ivanovo State Univ;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
mixed ligand complex formation; histidine; phenanthroline; calorimetry; denticity; TERNARY COPPER(II) COMPLEXES; EQUILIBRIUM-CONSTANTS; LIGAND COMPLEXES; METAL-COMPLEXES; TYROSINE; ETHYLENEDIAMINE; AMINES; RING;

Thermodynamics of the Formation of Mixed Complexes of Nickel(II) Ions with Histidine and Diamines in an Aqueous Solution

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