Partial molar volumes and isentropic compressibilities of N-acetyl amino acid amides in dilute aqueous solutions at (5, 15, 25, 35, and 45) degrees C

被引:42
作者
Kikuchi, M
Sakurai, M
Nitta, K
机构
[1] Division of Biological Sciences, Graduate School of Science, Hokkaido University
关键词
D O I
10.1021/je960147z
中图分类号
O414.1 [热力学];
学科分类号
摘要
The densities and sound velocities in dilute aqueous solutions of nine N-acetyl amino acid amides were measured at (5, 15, 25, 35, and 45)degrees C. The N-acetyl amino acid amides used were N-acetylglycinamide, N-acetyl-L-alaninamide, N-acetyl-L-valinamide, N-acetyl-L-leucinamide, N-acetyl-L-methioninamide, N-acetyl-L-prolinamide, N-acetyl-L-phenylalaninamide, N-acetyl-L-tryptophanamide, and N-acetyl-L-tyrosinamide. Partial molar volumes and partial molar isentropic compressibilities of these N-acetyl amino acid amides at infinite dilution were evaluated. Furthermore, the side chain contribution to the partial molar quantities of the N-acetyl amino acid amides can be derived using a group additivity approach. The results were compared with those of amino acids reported in our previous paper.
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页码:1439 / 1445
页数:7
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