A heteroleptic diradical Cr(III) complex with extended spin delocalization and large intramolecular magnetic exchange
Résumé
Successive chemical reductions of the heteroleptic complex [(tpy)-Cr III (tphz)] 3+ (tpy = terpyridine; tphz = tetrapyridophenazine) give rise to the mono-and di-radical redox isomers, [(tpy)Cr III (tphz À)] 2+ and [(tpy À)Cr III (tphz À)] + , respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between the S = 3/2 metal ion and S = 1/2 radical spins, affording well isolated S T = 1 and S T = 1/2 ground states at room temperature.
Domaines
Matériaux| Origine | Fichiers produits par l'(les) auteur(s) |
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