Oxidation Leading to Reduction: Redox-Induced Electron Transfer (RIET)

다국어 초록 (Multilingual Abstract)

<P>Complex electron transfer reactions have been characterized whereby in addition to electron transfer, subsequent electrochemical, chemical and even in some cases biological consequences occur. These include a secondary electron transfer that leads to a major rearrangement of the electronic structure, such that an initial oxidation leads to a reduction (or an initial reduction leads to an oxidation) for these valence ambiguous compounds. Mixed valency and valence-tautomeric behaviors can additionally result from these complex electron-transfer-induced reactions.</P>
<B>Graphic Abstract</B>
<P>Redox paradox? The initial one-electron oxidation of a metal ion induces a multi-electron rearrangement, leading to oxidation of the second metal ion and reduction of the tetraoxolate dianionic ligand bridging the two metals (see scheme). These electron-transfer events were observed with numerous spectroscopic, electrochemical, and crystallographic methods (TpyA=tris(2-pyridylmethylamine).
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