Enthalpies of solution of DL-α-Alanyl-DL-α-Valine in aqueous solution of amides at 298.15 K

被引：11

作者：

Smirnov, Valeriy I. ^{[1
]}

Badelin, Valentin G. ^{[1
]}

机构：

[1] Russian Acad Sci, Lab Thermodynam Solut Non Electrolytes & Biologic, Inst Solut Chem, Ivanovo 153045, Russia

来源：

THERMOCHIMICA ACTA | 2009年 / 485卷 / 1-2期

关键词：

Peptides; Enthalpies of solution and transfer; Aqueous solution of amides; ORGANIC SOLVENT MIXTURES; WATER-ALCOHOL MIXTURES; AMINO-ACIDS; THERMOCHEMICAL CHARACTERISTICS; INTERACTION COEFFICIENTS; UREA; ALANINE; 25-DEGREES-C; GLYCINE; PEPTIDES;

D O I：

10.1016/j.tca.2008.12.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The enthalpies of solution of DL-alpha-Alanyl-DL-alpha-Valine in aqueous solution of formamide, N-methylformamide, N,N-dimethylformamide, N,N-diethylformamide and N,N-dimethylacetamide were determined by calorimetry at 298.15 K over the concentration range x(2) = 0-0.4 mole fractions. Standard enthalpies of solution Delta H-sol(m)degrees, and transfer Delta H-tr(m)degrees from water to mixed solvents were computed. The enthalpy coefficients of pairwise DL-alpha-Alanyl-DL-alpha-Valine-amide interactions were calculated. The interrelation between the enthalpy characteristics of solution (transfer) of DL-alpha-Alanyl-DL-alpha-Valine and the structure and physicochemical characteristics of solvents, as well as the composition of mixtures were revealed. Published by Elsevier B.V.

引用

页码：72 / 75

页数：4

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