THERMODYNAMICS OF PROTON-TRANSFER PROCESSES OF STANDARD ALPHA-AMINO-ACIDS COMPARED WITH THE SAME PROCESSES IN THE GASEOUS-PHASE

被引：0

作者：

RODANTE, F ^{[1
]}

CATALANI, G ^{[1
]}

机构：

[1] IST REGINA ELENA,I-00161 ROME,ITALY

来源：

THERMOCHIMICA ACTA | 1994年 / 243卷 / 01期

关键词：

AMINO ACID; CALORIMETRY; HEAT OF IONIZATION; HEAT OF NEUTRALIZATION; HEAT OF PROTONATION; HEAT OF SOLUTION; OPTICAL ACTIVITY; PHASE; PROTONATION; PROTON TRANSFER; THERMODYNAMICS; ZWITTERION;

D O I：

10.1016/0040-6031(94)85034-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The basicity of the neutral form of some ''standard'' alpha-amino acids in gaseous and liquid phases is studied from the thermodynamic and statistical points of view. By using the proton transfer process (related to the amino group) in the gaseous and liquid phases, it is possible to carry out a thermodynamic cycle which allows the solvent effects to be separated from those intrinsic to neutral and protonated molecules. The basicity of these compounds seems to be mostly influenced by solute-solvent interactions (solvent effects). A monoparametric linear regression analysis leads (in terms of probability) to the hypothesis that it is uncertain if the side chains influence in the same way the basicity of the cc-amino acids in liquid and in gaseous phases.

引用

页码：1 / 16

页数：16

共 57 条

[1] FORMATION CONSTANTS AND ENTHALPY AND ENTROPY VALUES FOR ASSOCIATION OF H+ AND CU2+ WITH GLYCINATE AND PHENYLALANATE IONS IN AQUEOUS SOLUTION AT 10 25 AND 40 DEGREES [J].