Institut de Chimie Moléculaire et des Matériaux d'Orsay

Chimie Inorganique

Fe complexes, bioinspired catalysts for oxidation

Frédéric Banse (Prof), Jean-Noël Rebilly (Researcher), Katell Sénéchal-David (Associate Prof.)

Postdoc : Emmanuel Oheix

PhD student : Amanda Robinson


In chemical synthesis the conversion of small organic molecules into oxidized products with higher value added is most often carried out under stoichiometric and harsh conditions (high T and P, strong oxidizing agents generating harmful side products). In this context developping alternative solutions using molecular oxygen (cheap and environmentally innocuous) is highly desirable. However, due to its fundamental triplet (S=1) state the reaction of O2 with diamagnetic species is kinetically forbidden. Hence, its activation is required in order to overcome this limitation.

Interestingly, some metalloenzymes (monooxygenases, dioxygenases, hydroxylases) use O2 to catalyze the chemo-and regioselective oxidation of small organic substrates under mild conditions via the so-called "reductive activation of dioxygen". This corresponds to a controlled partial reduction of O2 at their active site which contains abundant bioavailable metal center(s) (Fe, Mn, Cu…). Therefore, reproducing the reactivity of these natural catalysts by means of simpler synthetic systems is relevant both from fundamental (determination of reaction mechanisms) and practical point of views (valorization of abundant feedstock).

Implementing cheap non heme FeII complexes and chemical oxidants, it is possible to generate Fe-peroxo, high valent Fe-oxo, that are able to oxidize small organic molecules. These reaction intermediates are reminiscent to those identified in the catalytic cycle of enzymes. Our main objectives are

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1/ understanding the intrinsic reactivity of these species (Isolation and study of reaction intermediates);

2/ mimicking the reactivity of natural enzymes through the activation of small renewable molecules (O2, H2O) instead of chemical oxidants (Activation of small molecules);

3/ improving the reactivity of our synthetic catalysts with the help of supramolecular second coordination sphere interactions (Insertion of the complexes into supramolecular systems and second coordination sphere effects).

 

PhD theses

Ongoing

Amanda Robinson — New Fe complexes with a non-innocent second coordination sphrere for bio-inspired oxidation catalysis

PhD advisor : Frédéric Banse ; Co-advisor : Jean-Noël Rebilly (Started in october 2018)


Defended

Antoine Bohn — Electrochemical approach of the reductive activation of O2 by iron based molecular complexes (2018)

PhD advisor : Frédéric Banse ; Co-advisor : Katell Sénéchal-David


Charlotte Buron — Development of novel oxidation bioinspired catalysts : non heme iron(II) complexes grafted on golf electrode or β-lactoglobuline (2015)

PhD advisor : Frédéric Banse ; Co-advisor : Katell Sénéchal-David


Nathalie Segaud — Study of dioxygen activation by an iron(II) complex and new heterodinuclear complexes : Contributions for the development of bioinsipred oxidation catalysts (2013)

PhD advisor : Frédéric Banse ; Co-advisor : Katell Sénéchal-David

Last publications (2016 - Today)

Bioinspired molecular catalysts for homogenous electrochemical activation of dioxygen. E. Anxolabéhère-Mallart, F. Banse, Current Opinion in Electrochemistry, 2019, 15, 118-124

Selective Formation of an FeIVO or an FeIIIOOH Intermediate From FeII-H2O2 : Controlled Heterolytic vs Homolytic O-O Bond Cleavage by the Second Coordination Sphere. K. Cheaib, M. Q. E. Mubarak, K. Sénéchal-David, C. Herrero, R. Guillot, M. Clémancey, J.-M. Latour, S. D. Visser, J.-P. Mahy, F. Banse, F. Avenier, Angew. Chem. Int. Ed., 2019, 58, 854-858

Chemoselective guest-triggered shaping of a polynuclear CuII calix[6]complex into a molecular host. S. Richard, G. Le Duc, N. Le Poul, Y. Le Mest, O. Reinaud, J.-N. Rebilly, Dalton Trans., 2017, 46, 15249-15256

Imidazolidine Ring Cleavage upon Complexation with First Row Transition Metals. K. Cheaib, C. Herrero, R. Guillot, F. Banse, J.-P. Mahy, F. Avenier, Eur. J. Inorg. Chem., 2017, 3884-3891

Synthesis and characterization of FeII complexes with a BPMEN type ligand bearing π-accepting nitro groups. A. Bohn, K. Sénéchal-David, J. Vanoutryve, R. Guillot, E. Rivière, F. Banse, European Journal of Inorganic Chemistry, 2017, 3057-3063

Mimicking the Regulation Step of Fe-Monooxygenases: Allosteric Modulation of FeIV-Oxo Formation by Guest Binding in a Dinuclear ZnII–FeII Calix[6]arene-Based Funnel Complex. N. Ségaud, C. De thomasson, C. Daverat, K. Sénéchal-David, A. Dos Santos, V. Steinmetz, P. Maître, J.-N. Rebilly, F. Banse, O. Reinaud, Chemistry – A European Journal, 2017, 23, 2894-2906

Characterization and Subsequent Reactivity of an Fe-Peroxo Porphyrin Generated by Electrochemical Reductive Activation of O2. R. Oliveira, W. Zouari, C. Herrero, F. Banse, B. Schöllhorn, C. Fave, E. Anxolabéhère-Mallart, Inorg. Chem., 2016, 55, 12204-12210

Photoassisted Oxidation of Sulfides Catalyzed by Artificial Metalloenzymes Using Water as an Oxygen Source. C. Herrero, N. Nguyen-Thi, F. Hammerer, F. Banse, D. Gagné, N. Doucet, J.-P. Mahy, R. Ricoux, Catalysts, 2016, 6, 202

Self-assembled monolayer formation of a (N5)Fe(ii) complex on gold electrodes: electrochemical properties and coordination chemistry on a surface. C. Buron, S. Groni, N. Segaud, S. Mazerat, D. Dragoe, C. Fave, K. Senechal-David, B. Schollhorn, F. Banse, Dalton Trans., 2016, 45, 19053-19061

Arene activation by a nonheme iron(III)–hydroperoxo complex: pathways leading to phenol and ketone products. A. S. Faponle, F. Banse, S. P. De Visser, JBIC Journal of Biological Inorganic Chemistry, 2016, 21, 453-462

Oxidation catalysis via visible-light water activation of a [Ru(bpy)3]2+ chromophore BSA-metallocorrole couple. C. Herrero, A. Quaranta, R. Ricoux, A. Trehoux, A. Mahammed, Z. Gross, F. Banse, J.-P. Mahy, Dalton Trans., 2016, 45, 706-710