PHOTOINDUCED TWO-ELECTRON REDUCTION OF METHYL VIOLOGEN DIMER BY 2-PROPANOL THROUGH INTRAMOLECULAR PROCESS AND FORMATION OF VIOLOGEN RADICAL CATION DIMER

1980 ◽  
Vol 9 (7) ◽  
pp. 821-824 ◽  
Author(s):  
Masaoki Furue ◽  
Shun-ichi Nozakura
Keyword(s):  
Radical Cation ◽  
Methyl Viologen ◽  
Electron Reduction ◽  
Intramolecular Process

Interfacial interactions and the heterogeneous one-electron reduction of methyl viologen

1987 ◽  
Vol 52 (5) ◽  
pp. 1097-1114 ◽  
Author(s):  
Michael Heyrovský ◽  
Ladislav Novotný
Keyword(s):  
Electron Transfer ◽  
Radical Cation ◽  
Electrode Surface ◽  
Methyl Viologen ◽  
Potential Range ◽  
Standard Redox Potential ◽  
Mercury Electrodes ◽  
Electron Reduction ◽  
The One ◽  
Surface Redox

The one-electron reversible electroreduction of methyl viologen to its radical cation in aqueous solutions on mercury electrodes proceeds, according to potential, concentration and time of electrolysis, in various ways. Methyl viologen is adsorbed in flat orientation at the electrode surface; it undergoes a surface redox process in π-interaction with the metal in a potential range positive by about 0.2 V of the beginning of the electroreduction. The actual reduction starts by electron transfer followed by adsorption of the radical cation and, at higher concentrations and in a narrow potential range, by crystallization at the electrode surface of a salt of the radical cation. In solution near the electrode the radical cation dimerizes and the dimer also adsorbs at the electrode. In the region of the standard redox potential and more negative the reduction proceeds by electron transfer from the electrode covered by a layer of the radical cation or of its dimer.

Relative One-Electron Reduction Potentials of Carotenoid Radical Cations and the Interactions of Carotenoids with the Vitamin E Radical Cation

1998 ◽  
Vol 120 (17) ◽  
pp. 4087-4090 ◽  
Author(s):  
Ruth Edge ◽  
Edward J. Land ◽  
David McGarvey ◽  
Louise Mulroy ◽  
T. George Truscott
Keyword(s):  
Vitamin E ◽  
Radical Cation ◽  
Radical Cations ◽  
Reduction Potentials ◽  
Electron Reduction

Kinetics of electron-transfer reactions between transition-metal complexes and the methyl viologen radical cation

1988 ◽  
Vol 27 (17) ◽  
pp. 2932-2934 ◽  
Author(s):  
Kevin R. Howes ◽  
C. Greg Pippin ◽  
James C. Sullivan ◽  
Dan Meisel ◽  
James H. Espenson ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Metal Complexes ◽  
Radical Cation ◽  
Transition Metal Complexes ◽  
Methyl Viologen ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Kinetics Of

Polarography of 2,2′-Bipyridyl Dimethiodide in Aqueous Solution

1974 ◽  
Vol 29 (1-2) ◽  
pp. 89-90 ◽  
Author(s):  
L. A. Summers
Keyword(s):  
Aqueous Solution ◽  
Radical Cation ◽  
Reduction Wave ◽  
Standard Calomel Electrode ◽  
Ph Dependent ◽  
Electron Reduction ◽  
Ph Range

2,2′-Bipyridyl dimethiodide in aqueous solution in the pH range 5.0-8.9 gives a symmetrical one-electron reduction wave independent of pH and concentration at a potential of —0.96 V against a standard calomel electrode due to the formation of the corresponding radical cation. At a much lower potential it also shows a second reduction wave which is pH dependent.

Radiolytically-induced one-electron reduction of methyl viologen in aqueous solution

1984 ◽  
Vol 23 (1-2) ◽  
pp. 229-236 ◽  
Author(s):  
Margherita Venturi ◽  
Quinto G. Mulazzani ◽  
Morton Z. Hoffman
Keyword(s):  
Aqueous Solution ◽  
Methyl Viologen ◽  
Electron Reduction
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