Thermodynamics of acid proton dissociation of some α-amino acids
1987; Elsevier BV; Volume: 111; Linguagem: Inglês
10.1016/0040-6031(87)88049-8
ISSN1872-762X
Autores Tópico(s)Analytical Chemistry and Chromatography
ResumoThe thermodynamics of the acid proton dissociation for seven α-amino acids were evaluated by electrochemical and calorimetric data. The calorimetric data were sensitive enough to reveal differences between even apparently similar α-amino acids structures. A calorimetric add strength scale in water is also presented. The effects influencing the acidity order were found to be ions and molecules of solvation. This scale emphasizes the prevalence of either effect considered. Both the ions and indissociate molecules of compounds containing the hydroxyl group are less solvated than the ions and indissociate molecule of α-amino acids showing an hydrophobic group.
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