TY - JOUR

T1 - Microwave Dielectric Permittivity and the Relaxation of 1,3-Dioxolane and 2,2-Dimethyl-1,3-dioxolane-4-methanol Aqueous Solutions

AU - Lyashchenko, A. K.

AU - Balakaeva, I. V.

AU - Smirnova, N. A.

AU - Safonova, E. A.

N1 - Funding Information: This work was performed as part of a State Task for the Kurnakov Institute of General and Inorganic Chemistry in the field of fundamental research. It was supported by the Russian Foundation for Basic Research, project no. 19-03-00033. Publisher Copyright: © 2021, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - Results are presented from measuring the microwave dielectric properties of aqueous solutions of 1,3-dioxolane and 2,2-dimethyl-1,3-dioxolane-4-methanol at seven frequencies in the range of 5-25 GHz and temperatures of 288, 298, and 308 K. The static dielectric constants are considered, along with the times and parameters of activation of the dielectric relaxation process. Differences between hydration-induced changes in water and the effects of interaction between different groups of molecules are established for the solutions of the considered compounds. The dynamics of water molecules in solution is slowed, compared to that in pure water in both cases. It is established that this slowing is due to different molecular mechanisms of interaction between the dissolved species and the tetrahedral network of the H-bonds of the initial water.

AB - Results are presented from measuring the microwave dielectric properties of aqueous solutions of 1,3-dioxolane and 2,2-dimethyl-1,3-dioxolane-4-methanol at seven frequencies in the range of 5-25 GHz and temperatures of 288, 298, and 308 K. The static dielectric constants are considered, along with the times and parameters of activation of the dielectric relaxation process. Differences between hydration-induced changes in water and the effects of interaction between different groups of molecules are established for the solutions of the considered compounds. The dynamics of water molecules in solution is slowed, compared to that in pure water in both cases. It is established that this slowing is due to different molecular mechanisms of interaction between the dissolved species and the tetrahedral network of the H-bonds of the initial water.

KW - 1,3-dioxolane

KW - 2,2-dimethyl-1,3-dioxolane-4-methanol

KW - dielectric properties

KW - hydration

KW - relaxation

KW - water structure

KW - 1

KW - 2

KW - 2-dimethyl-1

KW - 3-dioxolane

KW - 3-dioxolane-4-methanol

UR - http://www.scopus.com/inward/record.url?scp=85101334893&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/0e70eefc-5717-37bc-b813-fec32f2a6b85/

U2 - 10.1134/s0036024421010167

DO - 10.1134/s0036024421010167

M3 - Article

AN - SCOPUS:85101334893

VL - 95

SP - 90

EP - 96

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

SN - 0036-0244

IS - 1

ER -