Successive light-induced two electron transfers in a Ru–Fe supramolecular assembly: from Ru–Fe(II)–OH2 to Ru–Fe(IV)–oxo - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Chemical Science Année : 2015

Successive light-induced two electron transfers in a Ru–Fe supramolecular assembly: from Ru–Fe(II)–OH2 to Ru–Fe(IV)–oxo

Résumé

In the present work we describe the synthesis and study of a RuII–FeII chromophore–catalyst assembly designed to perform the light-induced activation of an iron bound water molecule and subsequent photo-driven oxidation of a substrate. Using a series of spectroscopic techniques, we demonstrate that excitation of the chromophore unit with 450 nm light, in the presence of a sacrificial electron acceptor, triggers a cascade of electron transfers leading to the formation of a high valent iron(IV)–oxo center from an iron(II)-bound water molecule. The activity of this catalytic center is illustrated by the oxidation of triphenyl phosphine.

Dates et versions

hal-01450312 , version 1 (31-01-2017)

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Christian Herrero, Annamaria Quaranta, Marie Sircoglou, Katell Sénéchal-David, Aurélie Baron, et al.. Successive light-induced two electron transfers in a Ru–Fe supramolecular assembly: from Ru–Fe(II)–OH2 to Ru–Fe(IV)–oxo. Chemical Science, 2015, ⟨10.1039/C5SC00024F⟩. ⟨hal-01450312⟩
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