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Dipyrrinphenol-Mn(III) complex: synthesis, electrochemistry, spectroscopic characterisation and reactivity

Herein, we report the manganese complex with a novel trianionic ligand, the pentafluorophenyldipyrrinphenol ligand DPPH(3). The X-ray crystal structure reveals that the Mn(III) complex exists in a dimeric form in the solid state. Electrochemical studies indicate two quasi-reversible one electron oxi...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2011-09, Vol.40 (36), p.9090-9093
Main Authors: El Ghachtouli, Sanae, Wójcik, Karolina, Copey, Laurent, Szydlo, Florence, Framery, Eric, Goux-Henry, Catherine, Billon, Laurianne, Charlot, Marie-France, Guillot, Régis, Andrioletti, Bruno, Aukauloo, Ally
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Language:English
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Summary:Herein, we report the manganese complex with a novel trianionic ligand, the pentafluorophenyldipyrrinphenol ligand DPPH(3). The X-ray crystal structure reveals that the Mn(III) complex exists in a dimeric form in the solid state. Electrochemical studies indicate two quasi-reversible one electron oxidation processes. EPR data on the one electron oxidised species in solution support the formation of a monuclear Mn complex with an S = 3/2 spin system. Preliminary studies towards epoxidation reactions were tested in the presence of iodosylbenzene (PhIO) and are in favour of an oxygen-atom-transfer (OAT) reaction catalyzed by the Mn(III) complex.
ISSN:1477-9226
1477-9234
DOI:10.1039/c1dt10868a