Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(III)-hydroxido complex

Sanae El Ghachtouli; Benedikt Lassalle-Kaiser; Pierre Dorlet; Régis Guillot; Elodie Anxolabéhère-Mallart; Cyrille Costentin; Ally Aukauloo

doi:10.1039/C1EE01078F

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Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(iii)-hydroxido complex†

Sanae El Ghachtouli,^ab Benedikt Lassalle-Kaiser,^bc Pierre Dorlet,^d Régis Guillot,^b Elodie Anxolabéhère-Mallart,*^a Cyrille Costentin*^a and Ally Aukauloo*^be

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* Corresponding authors

^a Laboratoire d'Electrochimie Moléculaire UMR CNRS—P7 7591 Université Paris Diderot—Paris, 15 rue Jean-Antoine de Baïf, Paris Cedex 13, France
E-mail: elodie.anxolabehere@univ-paris-diderot.fr, cyrille.costentin@univ-paris-diderot.fr
Fax: +33 1 57 27 87 88
Tel: +33 1 57 27 87 84/96

^b ICMMO—UMR 8182—Bât. 420, Université Paris-Sud 11, 15 rue Georges Clemenceau, Orsay Cedex, France
E-mail: ally.aukauloo@u-psud.fr
Tel: +33 1 69 15 47 56

^c Physical Biosciences Division, Lawrence Berkeley National Laboratory Institution, 1 Cyclotron Rd., Berkeley, USA
Fax: +1 510 486 77 68

^d Laboratoire du Stress Oxydant et Détoxication, CNRS URA 2096, Gif-sur-Yvette, France

^e CEA,iBiTec-S, SB2 SM, Gif-sur-Yvette, France

Abstract

Electrochemical studies of a new Mn(III)(OH) complex clearly evidence that the presence of outer spheres water molecules is essential for the reversibility of Mn^III^/II and Mn^IV^/IIIredox processes. In the Mn^III^/II case we found an isotope effect for D₂O and ¹⁸OH₂ allowing us to propose a mechanism for H₂O/HO⁻ ligand exchange coupled electron transfer activation of Mn–OH₂

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Article information

DOI: https://doi.org/10.1039/C1EE01078F
Article type: Communication
Submitted: 21 Jan 2011
Accepted: 31 Mar 2011
First published: 19 Apr 2011

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Energy Environ. Sci., 2011,4, 2041-2044

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Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(III)-hydroxido complex

S. El Ghachtouli, B. Lassalle-Kaiser, P. Dorlet, R. Guillot, E. Anxolabéhère-Mallart, C. Costentin and A. Aukauloo, Energy Environ. Sci., 2011, 4, 2041 DOI: 10.1039/C1EE01078F

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Energy & Environmental Science

Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(iii)-hydroxido complex†

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Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(III)-hydroxido complex

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