C
Claude Béguin
Researcher at Centre national de la recherche scientifique
Publications - 13
Citations - 305
Claude Béguin is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Electron paramagnetic resonance & Tripodal ligand. The author has an hindex of 7, co-authored 13 publications receiving 291 citations.
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Journal ArticleDOI
Dicopper(II) Complexes of H-BPMP-Type Ligands: pH-Induced Changes of Redox, Spectroscopic (19F NMR Studies of Fluorinated Complexes), Structural Properties, and Catecholase Activities
Catherine Belle,Claude Béguin,Isabelle Gautier-Luneau,Sylvain Hamman,Christian Philouze,Jean-Louis Pierre,Fabrice Thomas,Stéphane Torelli,Eric Saint-Aman,Michel Bonin +9 more
TL;DR: The studies show the pH-dependence for the catalytic abilities of the complexes, related with changes in the coordination sphere of the metal centers, and investigations of the catechol oxidase activities are of interest in modeling thecatecholase enzyme active site and in understanding aspects of structure/reactivity.
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Metabolization of iron by plant cells using O-Trensox, a high-affinity abiotic iron-chelating agent.
TL;DR: Using Fe(III)-Trensox, the rate of iron incorporation into ferritin was found to be higher than when using Fe-EDTA, but slower than with Fe-citrate, the natural iron carrier in xylem.
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Multifrequency EPR and Redox Reactivity Investigations of a Bis(μ-thiolato)-dicopper(II,II) Complex
Wassim Rammal,Catherine Belle,Claude Béguin,Carole Duboc,Christian Philouze,Jean-Louis Pierre,Laurent Le Pape,Sylvain Bertaina,Eric Saint-Aman,Stéphane Torelli +9 more
TL;DR: EPR and UV-vis spectra of 1 are consistent with a type I localized mixed-valent species, while dinuclear CuA centers of native cytochrome c oxidase (CcO)1-3 or nitrous oxide reductase (N2OR)4 have a delocalized CuIICuI mixed-Valent state.
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19F NMR: An underused efficient probe for paramagnetic metal centers in bioinorganic solution chemistry
TL;DR: The application of solution studies in bioinorganic chemistry through paramagnetic 19F NMR is briefly reviewed in this article, where the authors summarize some theoretical aspects and select applications from bio-inorganic Chemistry (enzymes and models).