Does anyone know of a paper where the formal oxidation potential of H2O to O2 in non-aqueous solvents, specially propylene carbonate and acetonitrile, has been measured or estimated?
see
Oxygen Chemistry (International Series of Monographs on Chemistry) Hardcover – September 19, 1991
by Donald T. Sawyer (Author), R. J. P. Williams (Foreword)
ISBN-13: 978-0195057980 ISBN-10: 0195057988 Edition: 1st
From my experience, it is difficult to find reliable tabulated data in such a case. The difficulty is that the values will largely vary with the solvent. Furthermore, different sources (authors) have used different reference electrodes and conversion of the data from one to another reference electrode is not easy (no reliable data, again).
Instead, measuring O2 reduction can be simply done by non-degassing the corresponding solvents. You will get the first reduction around -1V vs. AgCl, then you can apply different reference electrodes (NHE, SCE, AgCl, ferrocene).
That will be some work (!), but it will be worth it and MANY colleagues will be very gratefuld if you publish this data. Including me!
best AK
Dear Axel,
you are absolutely right.The O2 reduction is a reverse process of water oxidation. In the book I referred earlier the reduction potentials of O2 are given in CH3CN, but not water oxidation.
This is an old but still useful ref.;
How super is superoxide?
Donald T. Sawyer , Joan S. Valentine
Acc. Chem. Res., 1981, 14 (12), pp 393–400
I worked with Donald and Joan. Joan is still active, Donald retired a long time ago.
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