Temperature-dependent enthalpy parameters of the molecular interaction for urea and tetramethylurea as solutes in formamide, ethylene glycol and water

被引：3

作者：

Batov, Dmitriy V. ^{[1
]}

Ivanov, Evgeniy V. ^{[1
]}

Smirnova, Natalia L. ^{[1
]}

Krestov, Andrey V. Kustov ^{[1
]}

机构：

[1] Russian Acad Sci, Krestov Inst Solut Chem, 1 Akademicheskaya Str, Ivanovo, Russia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2023年 / 370卷

关键词：

Urea and tetramethylurea solutions; Enthalpy-interaction parameters; Effect of temperature; DILUTE AQUEOUS-SOLUTIONS; AMINO-ACID BEHAVIOR; SOLVATION; THERMODYNAMICS; DERIVATIVES; SOLVENTS; FORCE;

D O I：

10.1016/j.molliq.2022.121026

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：

Enthalpies of dilution of urea (U) solutions in formamide (FA), ethylene glycol (EG) and water were mea- sured calorimetrically in the temperature range between (288.15 and 318.15) K. Based on the results obtained, the enthalpy-homotactic coefficients of pairwise (h22) and triplet (h222) interactions between the solvated U molecules were computed and compared with the similar data for the respective solutions of tetramethylurea (TMU). An analysis was done of how temperature influences the solvophilic and solvophobic effects manifested in the h22 and h222 parameters for U and TMU in the studied organic sol- vents with a spatial H-bonding network.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：7

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