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Updated: Jun 20, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Redox switch-off of the ferromagnetic coupling in a mixed-spin tricobalt(II) triple mesocate
Marie-Claire Dul1, Emilio Pardo, Rodrigue Lescouëzec
1Institut Parisien de Chimie Moléculaire, Université Pierre et Marie Curie-Paris 6, UMR 7201, F-75252 Paris, France.
Abstract:
A prelude to redox-based, ferromagnetic "metal-organic switches" is exemplified by a new trinuclear oxalamide cobalt triple mesocate that presents two redox states (ON and OFF) with dramatically different magnetic properties; the two terminal high-spin d(7) Co(II) ions (S = (3)/(2)) that are ferromagnetically coupled in the homovalent tricobalt(II) reduced state (2) become uncoupled in the heterovalent tricobalt(II,III,II) oxidized state (2(ox)) upon one-electron oxidation of the central low-spin d(7) Co(II) ion (S = (1)/(2)) to a low-spin d(6) Co(III) ion (S = 0).
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