Solvation of Cobalt Tetrasulfophthalocyanine in Water-Acetonitrile Solvents

被引：2
|
作者：
Kovanova, M. A. [1 ]
Kuz'mina, I. A. [1 ]
Postnov, A. S. [1 ]
Derbeneva, P. D. [1 ]
Vashurin, A. S. [1 ]
机构：
[1] Ivanovo State Univ Chem & Technol, Ivanovo 153000, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2022年 / 96卷 / 04期
基金：
俄罗斯科学基金会;
关键词：
phthalocyanines; metal complexes; solvation; Gibbs free energy; water-organic solvents; PHTHALOCYANINE; COMPLEXES;
D O I：
10.1134/S0036024422040173
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The method of distribution between two immiscible phases is used to determine Gibbs free energies of transfer of cobalt tetrasulfophthalocyanine from water to water-acetonitrile mixtures (Delta(tr)G(0)(CoTSPc)(aq ->chi AN); chi(AN) = 0.0-0.5 mole fractions) at 25 degrees C. The effect of the mixed solvent composition and properties on change in the solvation state of CoTSPc was analyzed. It is found that increasing the content of the organic component in the mixed solvent results in desolvation of the phthalocyanine metal complex. Changes in the solvation state of CoTSPc are associated with a weakening of the solvation of the aromatic system due to a reduction in the energy of the universal solute-solvent type of interaction. Contributions from the resolvation of electron-donor and electron-acceptor centers of the macroheterocycle to Delta(tr)G(0)(CoTSPc)(aq ->chi AN) practically compensate each other.
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页码：751 / 755
页数：5
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