Dr. Florian Jaroschik (CR-CNRS @ ICGM, Montpellier)
« Modulating reactivity, luminescence and magnetic properties of organolanthanide complexes »
Abstract:
Organolanthanide chemistry has known a huge development over the last 25 years, including (i) access to unprecedented low-valent as well as tetravalent Ln chemistry, (ii) progress in small molecule activation (N2, H2, CO, CO2, …), (iii) first photocatalysts based on lanthanide complexes, (iv) impressive single-molecule magnets based on Dy3+ and Dy2+, (v) many new luminescent systems, (vi) efficient catalysts for polymerisation and other organic transformations. In this seminar, I will present some of our contributions to the fields of reactivity, luminescence and magnetism, with a special focus on interesting features brought about by bulky polyarylcyclopentadienyl ligands.1 Furthermore, I will show how selective C-F bond activation with lanthanides in fluorinated benzofulvenes can provide new, strongly coloured extended pi-systems.2
1 (a) G. B. Deacon, C. M. Forsyth, F. Jaroschik, P. C. Junk, D. L. Kay, T. Maschmeyer, A. F. Masters, J. Wang, L. D. Field, Organometallics 2008, 27, 4772-4778. (b) G. B. Deacon, F. Jaroschik, P. C. Junk, R. P. Kelly, Organometallics 2015, 34, 2369-2377. (c) R. P. Kelly, T. D. M. Bell, R. P. Cox, D. P. Daniels, G. B. Deacon, F. Jaroschik, P. C. Junk, X. F. Le Goff, G. Lemercier, A. Martinez, J. Wang, D. Werner, Organometallics 2015, 34, 5624-5636. (d) A. C. G. Shephard, D. P. Daniel, G. B. Deacon, Z. Guo, F. Jaroschik, P. C. Junk, Chem. Commun. 2022, 58, 4344 – 4347. (e) D. McClenaghan, G. Jonusauskas, P. C. Junk, F. Jaroschik, Inorg. Chem. 2024, 63, 9395-9405.
2 (a) T. Kumar, F. Massicot, D. Harakat, S. Chevreux, A. Martinez, K. Bordolinska, P. Preethanuj, R. Kokkuvayil Vasu, J.-B. Behr, J.-L. Vasse, F. Jaroschik, Chem. Eur. J. 2017, 23, 16460–16465. (b) T. Kumar, Y. Yang, S. Sghaier, Y. Zaid, X. Le Goff, E. Rousset, F. Massicot, D. Harakat, A. Martinez, M. Taillefer, L. Maron, J.-B. Behr, F. Jaroschik, Chem. Eur. J. 2021, 27, 4016-4021. (c) T. Kumar, Y. Yang, A. Ben Hassine, M. Deepak, Y. Prajabat, P. Khandelwal, M. Bouquin, M. Taillefer, F. Massicot, J.-B. Behr, L. Maron, F. Jaroschik, Chem. Asian J. 2025, in press
