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A heteroleptic diradical Cr(iii) complex with extended spin delocalization and large intramolecular magnetic exchange

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Abstract

Successive chemical reductions of the heteroleptic complex [(tpy)CrIII(tphz)]3+ (tpy = terpyridine; tphz = tetrapyridophenazine) give rise to the mono- and di-radical redox isomers, [(tpy)CrIII(tphz˙)]2+ and [(tpy˙)CrIII(tphz˙)]+, 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 ST = 1 and ST = 1/2 ground states at room temperature.

Graphical abstract: A heteroleptic diradical Cr(iii) complex with extended spin delocalization and large intramolecular magnetic exchange

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Article information


Submitted
20 Jan 2020
Accepted
19 Mar 2020
First published
24 Mar 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

A heteroleptic diradical Cr(III) complex with extended spin delocalization and large intramolecular magnetic exchange

X. Ma, E. A. Suturina, M. Rouzières, F. Wilhelm, A. Rogalev, R. Clérac and P. Dechambenoit, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC00548G

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