Ultrasonic study of proton-transfer reactions in aqueous solutions of amino acids

1992 ◽  
Vol 96 (2) ◽  
pp. 876-883 ◽  
Author(s):  
T. V. Chalikyan ◽  
D. P. Kharakoz ◽  
A. P. Sarvazyan ◽  
C. A. Cain ◽  
R. J. McGough ◽  
...  
Keyword(s):  
Amino Acids ◽  
Proton Transfer ◽  
Aqueous Solutions ◽  
Transfer Reactions ◽  
Ultrasonic Study ◽  
Proton Transfer Reactions

Kinetics of proton-transfer reactions of amino acids and simple polypeptides

1968 ◽  
Vol 90 (25) ◽  
pp. 6909-6913 ◽  
Author(s):  
Kenneth R. Applegate ◽  
Leon J. Slutsky ◽  
Richard C. Parker
Keyword(s):  
Amino Acids ◽  
Proton Transfer ◽  
Transfer Reactions ◽  
Proton Transfer Reactions ◽  
Kinetics Of

Insights on the mechanism of proton transfer reactions in amino acids

2011 ◽  
Vol 13 (17) ◽  
pp. 7773 ◽  
Author(s):  
Fernanda Duarte ◽  
Esteban Vöhringer-Martinez ◽  
Alejandro Toro-Labbé
Keyword(s):  
Amino Acids ◽  
Proton Transfer ◽  
Transfer Reactions ◽  
Proton Transfer Reactions

Proton transfer reactions in aqueous solutions of pyridoxamine phosphate

1988 ◽  
Vol 16 (4) ◽  
Author(s):  
J. Reiter ◽  
P. Schuster ◽  
H. Winkler ◽  
F. Eggers
Keyword(s):  
Proton Transfer ◽  
Aqueous Solutions ◽  
Transfer Reactions ◽  
Proton Transfer Reactions

Protonenübertragungsreaktionen zweibasischer Säuren in wäßriger Lösung: 3-Hydroxypyridin / Proton Transfer Reactions of Dibasic Acids in Aqueous Solution: 3-Hydroxypyridine

1976 ◽  
Vol 31 (5-6) ◽  
pp. 219-224 ◽  
Author(s):  
P. Schuster ◽  
K. Tortschanoff ◽  
H. Winkler
Keyword(s):  
Aqueous Solution ◽  
Relaxation Time ◽  
Proton Transfer ◽  
Aqueous Solutions ◽  
Hydration Shell ◽  
Transfer Reactions ◽  
Diffusion Controlled ◽  
Ultrasound Absorption ◽  
Proton Transfer Reactions

Proton transfer in aqueous solutions of 3-hydroxypyridin (3HP) has been studied by tempera­ture jump relaxation and ultrasound absorption techniques. Two chemical relaxations have been observed. In the range pK1<pH<pK2 the slower of the two processes corresponds to proton transfer between the N and O atoms. A mechanism is proposed which describes the pH and con­centration dependence of the relaxation time measured. Proton transfer involves two types of pro­cesses which operate in parallel: I. pseudomonomolecular, by consecutive diffusion-controlled protonation and deprotonation steps, and 2. bimolecular by diffusion-controlled proton transfer between the neutral 3HP molecule and its corresponding cation or anion. There is no evidence for direct monomolecular proton transfer within the hydration shell of the molecule (k→ ~ k← < 2 × 1O3 sec-1).

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