Thermodynamics of the Complexation of Cu2+ with Nicotinamide and Nicotinate Ions in Aqueous Solutions of Ethanol

Kuranova N. N.; Gamov G. A.; Gushchina A. S.Sharnin V. A.

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Thermodynamics of the Complexation of Cu2+ with Nicotinamide and Nicotinate Ions in Aqueous Solutions of Ethanol

机译：Thermodynamics of the Complexation of Cu2+ with Nicotinamide and Nicotinate Ions in Aqueous Solutions of Ethanol

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Copper(II) complexes with nicotinamide and nicotinate ion are synthesized. The composition and structure of the complexes are determined via elemental analysis and IR spectroscopy. Products of the thermal decomposition of the complexes are studied experimentally via synchronous thermal gravimetric and IR analysis. Changes in the enthalpy of Cu2+ complexation with nicotinate ions in a water-ethanol binary solvent are determined, and the obtained data are analyzed in terms of the solvation thermodynamic approach. It is found that differences in the enthalpy characteristics of solvation of the central and complex ions neutralize the contribution from ligand desolvation, resulting in small changes to the Delta H-tr(r) value.

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来源
《Russian Journal of Physical Chemistry》 |2022年第6期|1156-1162|共7页
作者
Kuranova N. N.; Gamov G. A.; Gushchina A. S.Sharnin V. A.;
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作者单位

Ivanovo State Univ Chem & Technol;

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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
nicotinamide; nicotinate; complexation; thermodynamics; solvation; solvent effect; HYDROXYBENZOATE COMPLEXES; METAL-COMPLEXES; WATER; CU(II); CO(II); ZN(II); NI(II); ENTHALPIES; BIS(NICOTINAMIDE); EQUILIBRIUM;

Thermodynamics of the Complexation of Cu2+ with Nicotinamide and Nicotinate Ions in Aqueous Solutions of Ethanol

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