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Our Cover pages The ERC B-YOND project This project was funded by the European Research Council (ERC) as part of the European Union's Horizon Europe research and innovation program (grant agreement no. 101044649). More info about the ERC B-YOND project Our publications Enhancing the Lewis Superacidity of Pyramidal Boranes With Boratriptycenes Containing Positively Charged Pyridinium Units. N. Niessen, L. Mineur, A. Chardon, A. Osi, A. I. Adjieufack, D. Mahaut, N. Tumanov, J. Wouters, B. Champagne, G. Berionni, Chemistry Europe, 2025, submitted. [Download] - 64 Synthesis of Vinyl Boronates from Aldehydes and Ketones by Peterson Olefination: Investigation of the Peterson/Boron-Wittig Chemoselectivity. J. Janssens, G. Berionni, R. Robiette, Eur. J. Org. Chem. 2025, e202500033. [Download] - 63 - (link for download: https://doi.org/10.1002/ejoc.202500033)Atropisomerism in Triarylboranes: Lewis Base Assisted Rotation at C-B Stereogenic Axis in Asymmetrical Boron Lewis Acids. T.-H. Doan, A. Chardon, N. Vanthuyne, T. N. Ramos, N. Tumanov, L. Fusaro, M. Albalat, L. Collard, J. Wouters, B. Champagne, G. Berionni, Angew. Chem. Int. Ed. 2025, 64, e202421931. [Download] - 62 - (link for download: https://doi.org/10.1002/anie.202421931 )Reactivity and Steric Parameters from 2D to 3D Bulky Pyridines: Increasing Steric Demand at Nitrogen with Chiral Azatriptycenes, A. BenSaida, D. Mahaut, N. Tumanov, J. Wouters, B. Champagne, N. Vanthuyne, R. Robiette, G. Berionni, Angew. Chem. Int. Ed. 2024, 63, e202407503. [Download] - 61 - (link for download: https://doi.org/10.1002/anie.202407503)- Regulating iminophosphorane PN bond reactivity through geometric constraints with cage-shaped triarylphosphines. L. Hu, S. Chakraborty, N. Tumanov, J. Wouters, R. Robiette, G. Berionni, Chem. Comm. 2024, 60, 7073. [Download] - 60 - (download link: https://doi.org/10.1039/D4CC01868K)Frustrated Lewis pair chemistry: early concepts, scope, and recent developments with 9-phosphatriptycenes Damien M., Benoit C., Guillaume B., Chimie Nouvelle n°143, 2023, 15 - [Download] - 59Controlling precision on the ring: "Desired borylation of fluoroaromatic compounds is achieved with cobalt catalyst" Guillaume B., Science 382, 2023, 1122-1123 - [Download] - 58Association of Pyramidal Boron Lewis Superacids with Pyridines: Bending 2,4,6-Collidine with the 10-Sulfonium-9-boratriptycene Osi, A., Niessen, N., Mahaut, D., Champagne, B., Chardon, A., Tumanov, N., Wouters, J., Berionni, G., Z. Anorg. Allg. Chem. 2023, 649, e202300066. [Download] - 57A focus on anionic boron anthracenes and triptycenes as entry point toward B-doped polyaromatic materials and Lewis acids G. Berionni, Chem. Sci.,2023, 14, 5241-5242 - [Download] - 56From Proton to Boron: The Lewis Analogs of Protonated Brønsted Super Acids, Osi, A., Tumanov, N., Fusaro, L., Wouters, J., Berionni, G., Chardon, A., Chem. Eur. J. 2023, e202301146 - [Download] - 55 - Dedicated to Prof. Alain Krief for his 80th birthday.Regioselective Transition-Metal Free Arenes C-H Borylations: From Directing Groups to Borylation Template Reagents, G. Berionni, Angew. Chem. Int. Ed. 2022, 61, e202210284. - [Download] - 54Reprogramming Main-Group Compounds: Toward New Superelectrophilic and Superacidic Catalysts, G. Berionni, Chimie Nouvelle, 2022, 139, 27-29. - DOI: 10.52809/cn2022.nxmn2068 - [download] - 53A Selenium Substituted Pyramidal 9-Boratriptycene Lewis Acid, A. Osi, N. Tumanov, J. Wouters, A. Chardon, G. Berionni, Synthesis 2022, online - DOI: 10.1055/a-1840-5680 - [download] - 529-phosphatriptycene derivatives: from their weak basicity to their application in frustrated Lewis pair chemistry, D. Mahaut, G. Berionni, B. Champagne, J. Phys. Chem. A, 2022, 126, 18, 2794-2801 - [download] - 51 Frustrated Lewis pair-catalyzed hydrogenation of unactivated alkenes with sterically hindered 9-phosphatriptycenes, D. Mahaut, B. Champagne, G. Berionni, 2022, ChemCatChem 2022,14, e202200294. - [download] - 50Taming the Lewis Superacidity of Non-Planar Boranes: C-H Bond Activation and Non-Classical Binding Modes at Boron - A. Osi, D. Mahaut, N. Tumanov, L. Fusaro, J. Wouters, B. Champagne, A. Chardon, G. Berionni. Angew. Chem. Int. Ed. 2022, 61, e202112342. - [download] - 49 Young Career Focus presents Guillaume Berionni, Synform, 2021, 159-161 - [download] - 48Future Prospects in Boron Chemistry: Boron Lewis Acids in Perspective - Chem. Syn. 2021, 1:10. - [download] - 47Rational Development of a Metal-Free Bifunctional System for the C-H Activation of Methane: A Density Functional Theory Investigation, D. Mahaut, A. Chardon, L. Mineur, G. Berionni, B. Champagne, ChemPhysChem 2021, 22, 1958-1966. - [download] - 46Six-membered Rings with One Phosphorus Atom, F. Rammal, V. Magné, G. Berionni, S. Lakhdar, Comprehensive Heterocyclic Chemistry IV, Elsevier,2022, Volume 7, 685-717 (book chapter). - [download] - 45Four-membered Rings with One Phosphorus, Arsenic, Antimony, or Bismuth Atom - V. Magné, F. Rammal, G. Berionni, S. Lakhdar, Comprehensive Heterocyclic Chemistry IV, Elsevier, 2022, Volume 2, 335-362 (book chapter). - [download] - 44Sterically hindered ortho-substituted phosphatriptycenes as configurationally stable P-chirogenic triarylphosphines, L. Hu, D. Mahaut, N. Tumanov, J. Wouters, L. Collard, R. Robiette, G. Berionni, Dalton Trans. 2021, 50, 4772-4777 - [download] - 43Triptycene Boronates, Boranes, and Boron Ate-Complexes: Toward Sterically Hindered Triarylboranes and Trifluoroborates, M. Gama, X. Antognini Silva, T-H. Doan, A. Osi, A. Chardon, N. Tumanov, J. Wouters, G. Berionni, Eur. J. Org. Chem. 2021, 1440-1445 - [download] - 42Methylene Bridging Effect on the Structures, Lewis Acidities and Optical Properties of Semi Planar Triarylboranes, T.-H. Doan, A. Chardon, A. Osi, D. Mahaut, N. Tumanov, J. Wouters, B. Champagne, G. Berionni, Chem. Eur. J.2021, 27, 1736-1743. - [download] - 41Non-planar Boron Lewis Acids Taking the Next Step: Development of Tunable Lewis Acids, Lewis Superacids and Bifunctional Catalysts, A. Chardon, A. Osi, D. Mahaut, A. Ben Saida, G Berionni, Synlett. 2020, 31, 1639-1648. - [download] - 40Controlled Generation of 9-Boratriptycene by Lewis Adduct Dissociation: Accessing a Unique Non-Planar Triarylborane, A. Chardon, A. Osi, D. Mahaut, T.-H. Doan, N. Tumanov, J. Wouters, L. Fusaro, B. Champagne, G Berionni, Angew. Chem. Int. Ed. 2020, 59, 12402-12406. - [download] - 39Pushing the Lewis Acidity Boundaries of Boron Compounds With Non-Planar Triarylboranes Derived from Triptycenes, A. Ben Saida, A. Chardon, A. Osi, N. Tumanov, J. Wouters, A. I. Adjieufack, B. Champagne, G. Berionni, Angew. Chem. Int. Ed. 2019, 58, 16889-16893. - [download] - 38Complementary Synthetic Approaches toward 9-Phosphatriptycene and Structure-Reactivity Investigations of Its Association with Sterically Hindered Lewis Acids, L. Hu, D. Mahaut, N. Tumanov, J. Wouters, R. Robiette, G. Berionni, J. Org. Chem. 2019, 84, 11268-11274. - [download] - 37The Halogen-Samarium Exchange Reaction: Synthetic Applications and Kinetics, L. Anthore-Dalion, A. D. Benischke, B. Wei, G Berionni, P. Knochel, Angew. Chem. Int. Ed. 2019, 58, 4046. - [download] - 36Opening Up New Research Lines in Lewis Acid/Base Catalysis, G. Berionni, L. Hu, A. Ben Saida, A. Chardon, M. Gama, A. Osi, D. Mahaut, X. Antognini Silva, Chimie Nouvelle, 2018, 128, 13. - [download] - 35Stereospecific Allylic Functionalization: The Reactions of Allylboronate Complexes with Electrophiles, A. D. Benischke, L. Anthore-Dalion, G. Berionni, P. Knochel, Angew. Chem. Int. Ed. 2017, 51, 16390-16394.[download] - 34Stereospecific Allylic Functionalization: The Reactions of Allylboronate Complexes with Electrophiles, C. García-Ruiz, J. L.-Y. Chen, C. Sandford, K. Feeney, G. Berionni, H. Mayr, V. K. Aggarwal, J. Am. Chem. Soc., 2017, 139, 15324-15327.[download] - 33Mechanistic studies of formal thioboration reactions of alkynes, A. Issaian, D. J. Faizi, J. O. Bailey, P. Mayer, G. Berionni*, D. A. Singleton*, S. A. Blum*, J. Org. Chem. 2017, 82, 8165-8178. [download] - 32Barbier continuous flow preparation and reactions of carbamoyllithiums for nucleophilic amidation, M. A. Ganiek, M. R. Becker, G. Berionni, H. Zipse, P. Knochel*, Chem. Eur. J. 2017, 23, 10280-10284. [download] - 31Nucleophilicities and Lewis basicities of sterically hindered pyridines, E. Follet, H. Zipse, S. Lakhdar, A. R. Ofial, G. Berionni*, Synthesis 2017, 49, 3495-3504. [special issue on the occasion of the 70th birthday of Professor Herbert Mayr] [download] - 30Superelectrophilicity in Michael-Type Reactions: Water Addition to 4-Nitrobenzodifuroxan, S. Lakhdar,* G. Berionni*, F. Terrier,* Synthesis 2017, 49, 3453-3459. [special issue on the occasion of the 70th birthday of Professor Herbert Mayr] [download] - 29Reactivity-tuning in frustrated Lewis pairs: nucleophilicities and lewis basicities of sterically hindered phosphines, E. Follet, P. Mayer, D. S. Stephenson, A. R. Ofial, G. Berionni*, Chem. Eur. J. 2017, 23, 7422-7427. [download] - 28Structures, Lewis acidities, electrophilicities, and protecting group abilities of phenyl-fluorenylium and tritylium ions., E. Follet, P. Mayer, G. Berionni*, Chem. Eur. J. 2017, 23, 623-630. [download][Selected as hot paper] - 27Nucleophilicity of alkyl zirconocene and titanocene precatalysts and kinetics of activation by carbenium ions and by B(C6F5)3, G. Berionni*, H. Kurouchi, L. Eisenburger, H. Mayr, Chem. Eur. J.2016, 22, 11196-11200. [download] - 26Before 2015 - https://researchportal.unamur.be/fr/persons/gberionn/publications/ RCO in detail SVG .cls-1 { fill: #323232; stroke-width: 0px; } Homepage See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our team See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our equipment See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Join us See content

Promoter (PI) Guillaume BERIONNI is also affiliated to the NISM Institute (FSM Cluster)Other membersAssistant : Oumayma Ben RomdhanePost-doc researchers: Sophie Rodrigues, Romain Losa and Akshitha SelvarajDoctors: Nicolas Niessen, Antoine Willems, Sayandip Chakraborty, Maxence Bonnevial and Merlin Lieuwouo ChimiInterns: Leny Gassas, Dorian JarlanAdministrative assistant: Marion Mathot May 2024 2nd row, left to right: Marion Mathot, Sophie Rodrigues, Nicolas Niessen, Merlin Lieuwouo Chimi, Tom Nazé, Antoine Willems, Lina Guinefa1st row, left to right: Mathilde Lebreton, Maxence Bonnevial, Sayandip Chakraborty, Guillaume Berionni, Julia Volk, Kajetan Bijouard, Oumayma Ben Romdhane RCO in detail SVG .cls-1 { fill: #323232; stroke-width: 0px; } Homepage See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our research See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our equipment See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Join us See content

Our group has 3 highly-equipped laboratories for organic and organometallic synthesis.

Post-docs & PhD students Postdoctoral position (24 months) in main-group chemistry starting in June 2025ContextIn the framework of the ERC consolidator project "B-Yond" financed by the Horizon Europe programme, a postdoc position is available in the Reactivity, Catalysis and Organometallic (RCO) chemistry research group (Prof. Berionni) at the chemistry department. Berionni) at the chemistry department of the University of Namur.Job descriptionAs a postdoctoral researcher with excellent expertise in main-group chemistry, you will investigate the coordination of ammonia and ammonia surrogates with boron Lewis acids and superacids. The coordination of small molecules (NH3, N2 and other N-containing molecules) with these Lewis acids will be investigated and the reactivity and structure of the resulting Lewis adducts will be analysed experimentally and computationally. More information on the EURAXESS Jobs platform Students & Trainees Don't hesitate to send us your application, we regularly have the space and time to support you during your dissertation or internship!Send us your application: guillaume.berionni@unamur.be Contact RCO PI Professor Guillaume Berionni guillaume.berionni@unamur.be Administrative assistant Marion Mathot marion.mathot@unamur.be RCO in detail SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our research See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our team See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Our equipment See content SVG .cls-1 { fill: #323232; stroke-width: 0px; } Homepage See content

Founded some 50 years ago, the Laboratoire d'Analyse par Réactions Nucléaires (LARN) in the Department of Physics at the University of Namur is home to a 2MV tandem particle gas pedal named ALTAÏS (Accélérateur Linéaire Tandetron pour l'Analyse et l'Implantation des Solides), in operation since 1999.

Dear teachers, We are pleased to invite you to a unique educational experience at the Antoine Thomas Astronomical Observatory. Offer your students the opportunity to discover the Antoine Thomas Astronomical Observatory, an observatory built on the very site where the Jesuit fathers established their own observation, training and research dome in the 19th century. Located in downtown Namur, in the heart of the university, our observatory is equipped with state-of-the-art instruments, for both night-time and daytime observation, with one of Belgium's largest solar telescopes. A visit to the observatory allows you to discover how astronomy is practiced today and - weather conditions permitting - to observe the sun in complete safety. Plan your visit today! To organize a school visit, please complete the registration form available on our website. Practical information:Guided tour 1ère to 6ème secondaire 1:30 pm to 2:30 pm or 3:00 pm to 4:00 pm Faculty of Medicine - Place du Palais de Justice, Namur Gratuit - Sur inscription The observatory is not accessible to people with reduced mobility Next date:February 11, 2025This activity is organized with the support of Wallonie Recherche. Visit registration

Dear teachers, We are pleased to invite you to a unique educational experience at the Antoine Thomas Astronomical Observatory. Offer your students the opportunity to discover the Antoine Thomas Astronomical Observatory, an observatory built on the very site where the Jesuit fathers established their own observation, training and research dome in the 19th century. Located in downtown Namur, in the heart of the university, our observatory is equipped with state-of-the-art instruments, for both night-time and daytime observation, with one of Belgium's largest solar telescopes. A visit to the observatory allows you to discover how astronomy is practiced today and - weather conditions permitting - to observe the sun in complete safety. Plan your visit today! To organize a school visit, please complete the registration form available on our website. Practical information:Guided tour 1ère to 6ème secondaire 1:30 pm to 2:30 pm or 3:00 pm to 4:00 pm Faculty of Medicine - Place du Palais de Justice, Namur Free - On registration The observatory is not accessible to people with reduced mobility This activity is organized with the support of Wallonie Recherche. Visit registration

Researchers from UNamur's Departments of Biology and Physics have conducted a scientific experiment to assess the radioresistance of the common black ant Lasius niger. The results of their work have just been published in the Belgian scientific journal Belgian Journal of Zoology. The Namur-based scientists demonstrate a level of resistance far superior to that of humans. Their spontaneous approach also demonstrates a lesser-known approach to scientific research.

While still only a dream, the quantum computer is the subject of intense research. The Artemis project, funded by the European Union (EU) and involving UNamur, aims to develop new sources of single photons, and thus lay the technological foundations. A member of the project, physicist Yves Caudano hopes, at the same time, to further explore the foundations of quantum physics.

ECOBAT is an EOS project (FNRS/FWO) that brings together four universities: UCLouvain, KULeuven, the University of Bonn (Germany), and the University of Namur. This consortium currently mobilizes some twenty researchers at all levels (Masters, PhD students, post-docs, promoters), including Dr. Pierre Beaujean, under the supervision of Professor Benoît Champagne..

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Practical info Date: Wednesday, March 12, 2025Location: PA01, entrance will be via the Faculty of Science lobby6:45pm: Doors open7:15pm: Show startsPrice and ticket sales: €5 pre-sale / €7 on the daySales: At lunchtime throughout the week of March 3 in the college hall!Payment: We prefer cash, but also accept payment by QR code or bank transfer. Read more