Proton-Conducting Hydrogen-Bonded Framework of a Cobalt(II) Single-Ion Magnet Sulfonate

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Diamagnetic metal sulfonates have been widely reported, while paramagnetic species are very rare, especially those that exhibit interesting magnetic and/or proton conduction properties. Herein, we report the synthesis, structure, magnetic, and proton-conducting properties of a hydrogen-bonded cobalt(II) organosulfonate complex. The coordination self-assembly CoII salts 8-quinolinesulfonic acid ligands affords mononuclear sulfonate featuring both coordinated noncoordinated sulfonic O atoms axial water molecules. Notably, units further connected by short S–O···H–O hydrogen-bonding interactions between SO3– H2O, leading to three-dimensional (3D) network. This exhibits superior thermal stability, as proved variable-temperature single-crystal powder X-ray diffraction thermogravimetric analysis (TGA) analysis. Variable-temperature variable humidity ac impedance spectroscopy indicated this cobalt is good superionic conductor with highest measured conductivity 1.5 × 10–3 S cm–1 at 90 °C under 97% relative humility, originating from 1D zigzag chains. In addition, field-induced slow relaxation was observed via dynamic susceptibility measurements. These results show not only first Co(II) single-ion magnet but also ″magnetic anisotropic ion-organosulfonate-coordinated water″ approach for design preparation bifunctional metalo-hydrogen-bonded organic framework (MHOF) materials.

Язык: Английский

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Metalo Hydrogen-Bonded Organic Frameworks Constructed by Coordinated Chains for Magnetic and Proton-Conductive Bifunctionality

Inorganic Chemistry, Год журнала: 2024, Номер 63(38), С. 17478 - 17487

Опубликована: Сен. 4, 2024

Metalo hydrogen-bonded organic frameworks (MHOFs) have received growing interest in designing crystalline functional materials. However, reports on bifunctional MHOFs showing magnetic and proton-conductive properties are extremely limited their design is challenging. Herein, we investigated the of two sulfonated

Язык: Английский

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Tunable structures and single-ion magnet property in two cobalt(II) coordination compounds constructed by mixed bipyridyl- tetracarboxylic ligands

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 142572 - 142572

Опубликована: Май 1, 2025

Язык: Английский

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Switchable Magnetic Properties in a Hydrogen-Bonded Cobalt(II)-Organosulfonate Framework via Reversible Dehydration–Hydration

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Май 12, 2025

Язык: Английский

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