Elucidating the Correlation Between the Redox Potential, Spin State, and Crystal Structure in a Series of Ferrous Complexes with Redox-Active Ligands.

Livia Getzner,  Yasmine Remili,  Zakaria Ziani,  Laure Vendier,  William Nicolazzi,  Aurelian Rotaru,  Haizhu Yu,  Gábor Molnár,  Saioa Cobo,  Azzedine Bousseksou.
Angew. Chem. Int. Ed. 2025, e202506965.
https://doi.org/10.1002/anie.202506965

A series of Fe(II) Hofmann-type clathrates with redox-active ligands reveals a bell-shaped relationship between redox potential and spin crossover temperature.
This work uncovers how electronic ligand tuning modulates spin state, crystal symmetry, and electron transfer, rationalized through Marcus theory.

Contacts:
Saioa Cobo  saioa.cobo@lcc-toulouse.fr
Azzedine Bousseksou azzedine.bousseksou@lcc-toulouse.fr