Dominique Luneau (University Claude Bernard Lyon 1): Memories in coordination chemistry of nitroxide radicals

Coordination chemistry of nitronyl nitroxide free radicals has played a major role in the development of molecular-based magnetic materials [1-2]. Even today, the metal-nitroxide bond remains a singular source of very diverse and original magnetic systems based on hetero-spin frameworks.[3] During this seminar, we illustrate our research in the field we three type of bistable metal-radical systems from. This comprises molecular entities with Cu(II)-radical bonds giving rise to a molecular spin transition[3] and 2D coordination polymers with Mn(II)-radical bonds exhibiting either ferrimagnet or valence tautomerism behavior.[5]. Prospective in the field will be discuss.

References:

[1] A. Caneschi, D. Gatteschi, R. Sessoli and P. Rey Acc. Chem. Res. 1989, 22, 392-398.

[2] K. Inoue, T. Hayamizu, H. Iwamura, D. Hashizume, Y. Ohashi, J. Am. Chem. Soc. 1996, 118, 1803-1804.

[3] D. Luneau Eur. J. Inorg. Chem. 2020, 2020, 597-604.

[4] D. Luneau, A. Borta, Y. Chumakov, J.-F. Jacquot, E. Jeanneau, C. Lescop, P. Rey, Inorg. Chim. Acta 2008, 361, 3669-3676

[5] A. Lannes, Y. Suffren, J. B. Tommasino, R. Chiriac, F. Toche, L. Khrouz, F. Molton, C. Duboc, I. Kieffer, J. L. Hazemann, C. Reber, A. Hauser, D. Luneau J. Am. Chem. Soc. 2016, 138, 16493-16501.

[6] C. Lecourt, Y. Izumi, L. Khrouz, F. Toche, R. Chiriac, N. Belanger-Desmarais, C. Reber, O. Fabelo, K. Inoue, C. Desroches, D. Luneau Dalton Trans. 2020, 49, 15646-15662.

[7] C. Lecourt, Y. Izumi, K. Maryunina, K. Inoue, N. Belanger-Desmarais, C. Reber, C. Desroches, D. Luneau Chem. Commun. 2021, 57, 2376-2379.