scholarly journals Water‐Assisted Homolytic Dissociation of Propyne on a Reduced Ceria Surface

2020 ◽  
Vol 59 (15) ◽  
pp. 6150-6154
Author(s):  
Jian‐Qiang Zhong ◽  
Zhong‐Kang Han ◽  
Kristin Werner ◽  
Xiao‐Yan Li ◽  
Yi Gao ◽  
...  
Keyword(s):  
Homolytic Dissociation

Homolytic dissociation in hydrogen-bonding liquids: energetics of the phenol O?H bond in methanol and the water O?H bond in water

2004 ◽  
Vol 112 (4) ◽  
Author(s):  
S. G. Est�cio ◽  
P. Cabral do Couto ◽  
R. C. Guedes ◽  
B. J. Costa Cabral ◽  
J. A. Martinho Sim�es
Keyword(s):  
Hydrogen Bonding ◽  
Homolytic Dissociation

Acid–base behaviour of the ferricyanide ion in perchloric acid media. Spectrophotometric and kinetic study

1990 ◽  
Vol 68 (2) ◽  
pp. 228-235 ◽  
Author(s):  
Pedro L. Domingo ◽  
Begoña García ◽  
José M. Leal
Keyword(s):  
Kinetic Study ◽  
Perchloric Acid ◽  
Decomposition Reaction ◽  
Acid Base ◽  
Acid Media ◽  
Protonation Equilibria ◽  
Aqueous Perchloric Acid ◽  
Protonated Species ◽  
Heterolytic Dissociation ◽  
Homolytic Dissociation

A wide study was carried out of the acid–base behaviour of ferricyanide ions in aqueous perchloric acid media in the range 0.1–11.5 M. This study shows that protonation and decomposition of the ferricyanide ions occur simultaneously. The three successive protonation equilibria were found in the acidity ranges 0.1–4.0, 3.5–8.5, and 7.0–11.5 M HClO4, respectively. A kinetic study was also made of the decomposition reaction at 60 °C. The kinetic data are explained by considering a reaction mechanism involving homolytic and heterolytic dissociation steps. The homolytic and heterolytic rate constants corresponding to each of the four protonated species were determined, along with the acid–base protonation constants, pK1 = −6.25 ± 0.10; pK2 = −3.23 ± 0.03; and pK3 = −0.60 ± 0.02. Keywords: acid–base behaviour, protonated species, decomposition, homolytic dissociation, heterolytic dissociation.

A computational study of radical initiated protein backbone homolytic dissociation on all natural amino acids

2016 ◽  
Vol 18 (45) ◽  
pp. 30972-30981 ◽  
Author(s):  
Jon Uranga ◽  
Oier Lakuntza ◽  
Eloy Ramos-Cordoba ◽  
Jon M. Matxain ◽  
Jon I. Mujika
Keyword(s):  
Amino Acids ◽  
Hydroxyl Radical ◽  
Computational Study ◽  
Reactive Species ◽  
Protein Backbone ◽  
Natural Amino Acids ◽  
Homolytic Dissociation

Hydroxyl radical (˙OH) is known to be one of the most reactive species. The attack of this radical onto the backbone of all natural amino acids is investigated.

Sign in / Sign up

Export Citation Format

Share Document