Enthalpic characteristics of solvation of 1-AZA-18-Crown-6 in aqueous-ethanol and aqueous dimethylsulfoxide solvents
- Authors: Usacheva T.R.1, Krutova O.N.1, Kuranova N.N.1, Kushnir R.A.1, Kashina O.V.1
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Affiliations:
- Ivanovo State University of Chemistry and Technology
- Issue: Vol 99, No 3 (2025)
- Pages: 402–407
- Section: ФИЗИЧЕСКАЯ ХИМИЯ РАСТВОРОВ
- Submitted: 03.06.2025
- Published: 29.05.2025
- URL: https://rjonco.com/0044-4537/article/view/682014
- DOI: https://doi.org/10.31857/S0044453725030043
- EDN: https://elibrary.ru/EBNCLI
- ID: 682014
Cite item
Abstract
The heat effects of dissolution of 1-aza-18-crown-6 in mixed water-ethanol and water-dimethylsulfoxide solvents at 298.15 K are determined by the calorimetric method. Dissolution of 1-aza-18-crown-6 is found to be exothermic in water and in water-organic solvents with initial co-solvent additions. For co-solvent contents greater than 0.2 mole fraction, dissolution of 1-aza-18-crown-6 is accompanied by an endo effect, which increases with the increasing content of both ethanol and dimethyl sulfoxide. The enthalpies of transfer of 1-aza-18-crown-6 from water to aqueous solutions of ethanol and dimethyl sulfoxide are calculated. The enthalpic characteristics of solvation of crown ethers in aqueous-organic solvents are compared.
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About the authors
T. R. Usacheva
Ivanovo State University of Chemistry and Technology
Author for correspondence.
Email: oxt@isuct.ru
Russian Federation, Ivanovo
O. N. Krutova
Ivanovo State University of Chemistry and Technology
Email: oxt@isuct.ru
Russian Federation, Ivanovo
N. N. Kuranova
Ivanovo State University of Chemistry and Technology
Email: oxt@isuct.ru
Russian Federation, Ivanovo
R. A. Kushnir
Ivanovo State University of Chemistry and Technology
Email: oxt@isuct.ru
Russian Federation, Ivanovo
O. V. Kashina
Ivanovo State University of Chemistry and Technology
Email: oxt@isuct.ru
Russian Federation, Ivanovo
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