Composition and Stability of Copper(II) Complexes with [2.2.2]Cryptand in Aqueous and Aqueous Ethanol Solutions
| العنوان: | Composition and Stability of Copper(II) Complexes with [2.2.2]Cryptand in Aqueous and Aqueous Ethanol Solutions |
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| المؤلفون: | V. A. Isaeva, Valentin A. Sharnin, G. A. Gamov, K. A. Kipyatkov |
| المصدر: | Russian Journal of Physical Chemistry A. 95:968-973 |
| بيانات النشر: | Pleiades Publishing Ltd, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Aqueous solution, medicine.diagnostic_test, Cryptand, Inorganic chemistry, Solvation, chemistry.chemical_element, Protonation, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Copper, 0104 chemical sciences, Gibbs free energy, chemistry.chemical_compound, symbols.namesake, chemistry, Spectrophotometry, symbols, medicine, Physical and Theoretical Chemistry, 0210 nano-technology, 2.2.2-Cryptand |
| الوصف: | Coordination equilibria in aqueous ethanol solutions of copper(II) and [2.2.2]cryptand are studied via spectrophotometry and potentiometry. It is shown that copper(II) ions form mononuclear, dinuclear, and protonated complexes with [2.2.2]cryptand. The stability constants of the formed complexes are determined potentiometrically at Т = 298 K and µ → 0 in aqueous and aqueous ethanol solutions. It is established that an increase in ethanol concentration of the solution improves the stability of mono- and dinuclear complexes of copper(II) with [2.2.2]cryptand and reduces the stability of the protonated complex. It is demonstrated that the rise in the negative value of the Gibbs energy of formation of mononuclear copper(II) cryptate in aqueous ethanol mixtures is due to weakening the solvation of the complexing ion. |
| تدمد: | 1531-863X 0036-0244 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::94671e2f5364169f73a4724c410fc749 https://doi.org/10.1134/s0036024421050162 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........94671e2f5364169f73a4724c410fc749 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1531863X 00360244 |
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