An efficient buffer-mediated control between free radical substitution and proton-coupled electron transfer: dehalogenation of iodoethane by the α-hydroxyethyl radical in aqueous solution

2013 ◽  
Vol 15 (41) ◽  
pp. 18001 ◽  
Author(s):  
Ivan Ljubić ◽  
Brunislav Matasović ◽  
Marija Bonifačić
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Free Radical ◽  
Proton Coupled Electron Transfer ◽  
Radical Substitution

Probing electron transfer between hemin and riboflavin using a combination of analytical approaches and theoretical calculations

2017 ◽  
Vol 19 (48) ◽  
pp. 32580-32588 ◽  
Author(s):  
Wen-Lan Wang ◽  
Yuan Min ◽  
Sheng-Song Yu ◽  
Wei Chen ◽  
Jie-Jie Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Theoretical Calculations ◽  
Resonance Method ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Method ◽  
Proton Coupled Electron Transfer ◽  
Analytical Approaches ◽  
Electron Paramagnetic ◽  
Transfer Mechanisms

Proton-coupled electron transfer mechanisms of riboflavin bound hemin in aqueous solution are elucidated by spectroelectrochemical analysis, the electron paramagnetic resonance method and theoretical calculations.

scholarly journals Exploring Autoionization and Photoinduced Proton-Coupled Electron Transfer Pathways of Phenol in Aqueous Solution

2015 ◽  
Vol 6 (20) ◽  
pp. 4159-4164 ◽  
Author(s):  
Thomas A. A. Oliver ◽  
Yuyuan Zhang ◽  
Anirban Roy ◽  
Michael N. R. Ashfold ◽  
Stephen E. Bradforth
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Proton Coupled Electron Transfer ◽  
Electron Transfer Pathways

Amine autoxidation in aqueous solution

1983 ◽  
Vol 36 (4) ◽  
pp. 719 ◽  
Author(s):  
ALJ Beckwith ◽  
PH Eichinger ◽  
BA Mooney ◽  
RH Prager
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Free Radical ◽  
Electron Acceptors ◽  
Hydroxyl Groups ◽  
Free Base ◽  
Strong Electron ◽  
Radical Initiators ◽  
Mechanism Of Oxidation ◽  
Radical Traps

The uncatalysed autoxidation of aqueous solutions of tertiary aliphatic amines has been studied in order to obtain information concerning the mechanism of oxidation of Sirotherm resins. Oxidation occurs most rapidly in the free base, and the general correlation of rate with pK, or ionization potential suggests that electron transfer to form an aminium radical cation is rate-determining. The reaction is not initiated by free radical initiators, nor inhibited by radical traps. It is significantly catalysed by strong electron acceptors and by light and is moderately inhibited by the electron donor N-phenylanthranilic acid. Pyrrolidines and hexahydroazepines are oxidized faster than piperidines, and hydroxyl groups on β-carbons increase the rate of oxidation, while those on γ-carbons decrease it. The major products of autoxidation of alkyl pyrrolidines in water were found to be N-oxides. Various pyrrolidinones were isolated in smaller yield.

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