Issue 36, 2020
From the journal:

Chemical Communications

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

Xiaozhou Ma,a   Elizaveta A. Suturina, ORCID logo b   Mathieu Rouzières,a   Fabrice Wilhelm,c   Andrei Rogalev,c   Rodolphe Clérac ORCID logo *a  and  Pierre Dechambenoit ORCID logo *a  

* Corresponding authors

a Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600 Pessac, France
E-mail: rodolphe.clerac@crpp.cnrs.fr, pierre.dechambenoit@crpp.cnrs.fr

b Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK

c ESRF-The European Synchrotron, 38043 Grenoble Cedex 9, France

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

DOI
https://doi.org/10.1039/D0CC00548G
Article type
Communication
Submitted
20 Jan 2020
Accepted
19 Mar 2020
First published
24 Mar 2020

Chem. Commun., 2020,56, 4906-4909

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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, 56, 4906 DOI: 10.1039/D0CC00548G

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