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

Xiaozhou Ma; Elizaveta A. Suturina; Mathieu Rouzières; Fabrice Wilhelm; Andrei Rogalev; Rodolphe Clérac; Pierre Dechambenoit

doi:10.1039/D0CC00548G

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

Xiaozhou Ma, Elizaveta A. Suturina, Mathieu Rouzières, Fabrice Wilhelm, Andrei Rogalev, Rodolphe Clérac, Pierre Dechambenoit

Department of Chemistry

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Abstract

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? ^-)] ²⁺and [(tpy? ^-)Cr ^III(tphz? ^-)] ⁺, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between theS= 3/2 metal ion andS= 1/2 radical spins, affording well isolatedS _T= 1 andS _T= 1/2 ground states at room temperature.

Original language	English
Pages (from-to)	4906-4909
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	36
Early online date	24 Mar 2020
DOIs	https://doi.org/10.1039/D0CC00548G
Publication status	Published - 4 May 2020

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1039/D0CC00548G

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Copyright 2020 Royal Society of Chemistry. The final publication is available at Chemical Communications via https://pubs.rsc.org/en/content/articlelanding/2020/CC/D0CC00548G#!divAbstract
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title = "A heteroleptic diradical Cr(iii) complex with extended spin delocalization and large intramolecular magnetic exchange",

abstract = "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? -)] 2+and [(tpy? -)Cr III(tphz? -)] +, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between theS= 3/2 metal ion andS= 1/2 radical spins, affording well isolatedS T= 1 andS T= 1/2 ground states at room temperature. ",

author = "Xiaozhou Ma and Suturina, \{Elizaveta A.\} and Mathieu Rouzi{\`e}res and Fabrice Wilhelm and Andrei Rogalev and Rodolphe Cl{\'e}rac and Pierre Dechambenoit",

year = "2020",

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doi = "10.1039/D0CC00548G",

language = "English",

volume = "56",

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T1 - A heteroleptic diradical Cr(iii) complex with extended spin delocalization and large intramolecular magnetic exchange

AU - Ma, Xiaozhou

AU - Suturina, Elizaveta A.

AU - Rouzières, Mathieu

AU - Wilhelm, Fabrice

AU - Rogalev, Andrei

AU - Clérac, Rodolphe

AU - Dechambenoit, Pierre

PY - 2020/5/4

Y1 - 2020/5/4

N2 - 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? -)] 2+and [(tpy? -)Cr III(tphz? -)] +, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between theS= 3/2 metal ion andS= 1/2 radical spins, affording well isolatedS T= 1 andS T= 1/2 ground states at room temperature.

AB - 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? -)] 2+and [(tpy? -)Cr III(tphz? -)] +, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between theS= 3/2 metal ion andS= 1/2 radical spins, affording well isolatedS T= 1 andS T= 1/2 ground states at room temperature.

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U2 - 10.1039/D0CC00548G

DO - 10.1039/D0CC00548G

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JO - Chemical Communications

JF - Chemical Communications

IS - 36

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

Abstract

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