Heterotactic Enthalpic Interactions of L-Arginine and L-Proline with 1,3-Butanediol and 2,3-Butanediol in Aqueous Solutions

被引：7

作者：

Zhu, Yan ^{[2
]}

Cheng, Xueli ^{[1
,3
]}

Pang, Xianhong ^{[2
]}

Yu, Li ^{[3
]}

机构：

[1] Taishan Univ, Dept Chem & Environm Sci, Tai An 271021, Shandong, Peoples R China

[2] Taishan Med Coll, Dept Chem & Chem Engn, Tai An 271016, Shandong, Peoples R China

[3] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2010年 / 55卷 / 09期

关键词：

ALPHA-AMINO-ACIDS; 298.15; K; SYSTEMS; UREA; NMR;

D O I：

10.1021/je100318f

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The enthalpies of the mixture of (S)-2-amino-5-guanidinopentanoic acid and (2S)-pyrrolidine-2-carboxylic acid with 1,3-butanediol, 2,3-butanediol, and their respective enthalpies of dilution in aqueous solutions at 310.15 K were determined as a function of the mole fraction by flow microcalorimetric measurements. These experimental results have been analyzed to obtain the heterotactic enthalpic interaction coefficients (h(xy)) according to the McMillan-Mayer theory. It has been found that the h(xy) coefficients between (S)-2amino-5-guanidinopentanoic acid and (2S)-pyrrolidine-2-carboxylic acid with butanediol molecules in aqueous solutions at 310.15 K are all positive. The results are discussed in terms of solute solute-and solute-solvent interactions.

引用

页码：3813 / 3816

页数：4

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