Oxygen intermolecular electron transfer reactions

Oxygen Production by Intermolecular Electron Transfer Processes 61.S.4.S.1 Uncatalyzed reactions... 

In general, the excited radicals shown have been found to possess enhanced donor/acceptor properties, especially in interactions with such quenchers as oxygen, dienes, amines, and halides. To date, the most well-characterized intermolecular processes are charge (electron) transfer reactions between excited diphenyl-methyl radicals and electron donors and acceptors. Thus, excited 132 reacts with methyl benzoates and benzyl bromides (Schemes 23 and 24) with rates that increase with the increasing electron withdrawing ability of substituents on the... 

Solutions of indium (I) can be prepared by treatment of indium amalgam with silver triflate in dry acetonitrile in the absence of oxygen, and then diluted with water to give the low-concentration aqueous solution, which plays a sizable role in the study of the details of intermolecular electron transfer processes in solution. Aqueous In(I) solution has been used to examine the behavior of this hypovalent center in inorganic redox transformations. Reactions with complexes of the type [(NH3)5Co (Lig)] and [(NH3)5Ru (Lig)] (Tig = Cl, Br , I or HC2O4 ) show two consecutive one-electron reactions initiated by the formation of the metastable state In , which is then rapidly oxidized to In , and the first of which is predominating an inner-sphere mechanism. ... 

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