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Updated: Jun 14, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2D and 3D bimetallic oxalate-based ferromagnets prepared by insertion of different Fe(III) spin crossover complexes
Miguel Clemente-León1, Eugenio Coronado, Maurici López-Jordà
1Instituto de Ciencia Molecular, Universitat de València, Polígono de la Coma s/n, 46980, Valencia, Spain. miguel.clemente@uv.es
Abstract:
The syntheses, structures and magnetic properties of the compounds of formula [Fe(III)(5-NO(2)sal(2)-trien)][Mn(II)Cr(III)(ox)(3)]·CH(3)NO(2).0.5H(2)O (1) and [Fe(III)(5-CH(3)Osal(2)-trien)][Mn(II)Cr(III)(ox)(3)] (2) are reported. The structure of 1, that crystallizes in the P2(1) chiral space group, presents a 2D honeycomb anionic layer formed by Mn(II) and Cr(III) ions linked through oxalate ligands and a cationic layer of [Fe(III)(5-NO(2)sal(2)-trien)](+) complexes intercalated between the 2D oxalate network. The structure of 2, that crystallizes in the Pna2(1) acentric space group, presents a 3D achiral anionic network formed by Mn(II) and Cr(III) ions linked through oxalate ligands with [Fe(5-CH(3)Osal(2)-trien)](+) complexes intercalated within the 3D oxalate network. The magnetic properties of 1 and 2 indicate that both compounds undergo a long-range ferromagnetic ordering at ca. 5 K. On the other hand, the inserted Fe(III) cations remain mainly in the low-spin (LS) state in the case of 1 and in the high-spin (HS) state in the case of 2.
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