Magnetocaloric efficiency tuning through solvent-triggered 3D to 2D interconversion in holmium()-based dynamic MOFs

The neutral holmium( iii ) oxalate octadecahydrate {[Ho 2 (ox) 3 (H 2 O) 6 ]·12H 2 O} n of mixed hexagonal/decagonal (6 3 ·10 3 ) 3D net topology shows important changes in the magnetocaloric efficiency upon dehydration/rehydration by heating and water vapor exposition to give the holmium( iii ) oxa...

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Published in:Chemical communications (Cambridge, England) England), 2024-07, Vol.6 (58), p.7451-7454
Main Authors: El Alouani Dahmouni, Nadia, Orts-Arroyo, Marta, Sanchis-Perucho, Adrián, Moliner, Nicolás, Mayans, Júlia, Pacheco, Mario, Castro, Isabel, De Munno, Giovanni, Marino, Nadia, Ruiz-García, Rafael, Martínez-Lillo, José
Format: Article
Language:English
Subjects:
Dehydration
Holmium
Topology
Water vapor
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Summary:The neutral holmium( iii ) oxalate octadecahydrate {[Ho 2 (ox) 3 (H 2 O) 6 ]·12H 2 O} n of mixed hexagonal/decagonal (6 3 ·10 3 ) 3D net topology shows important changes in the magnetocaloric efficiency upon dehydration/rehydration by heating and water vapor exposition to give the holmium( iii ) oxalate decahydrate {[Ho 2 (ox) 3 (H 2 O) 6 ]·4H 2 O} n of hexagonal (6 3 ) 2D net topology through the intermediacy of the elusive amorphous anhydrous compound {Ho 2 (ox) 3 } n . Magnetothermal solvatoswitching in the family of holmium( iii ) sesquioxalate hydrates takes place through a crystalline-to-amorphous-to-crystalline 3D to 2D MOF structural transformation.
ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/d4cc02539c