Miao, L.; Liu, C.-M.; Kou, H.-Z. {GdIII7} and {GdIII14} Cluster Formation Based on a Rhodamine 6G Ligand with a Magnetocaloric Effect. Molecules2024, 29, 389.
Miao, L.; Liu, C.-M.; Kou, H.-Z. {GdIII7} and {GdIII14} Cluster Formation Based on a Rhodamine 6G Ligand with a Magnetocaloric Effect. Molecules 2024, 29, 389.
Miao, L.; Liu, C.-M.; Kou, H.-Z. {GdIII7} and {GdIII14} Cluster Formation Based on a Rhodamine 6G Ligand with a Magnetocaloric Effect. Molecules2024, 29, 389.
Miao, L.; Liu, C.-M.; Kou, H.-Z. {GdIII7} and {GdIII14} Cluster Formation Based on a Rhodamine 6G Ligand with a Magnetocaloric Effect. Molecules 2024, 29, 389.
Abstract
Heptanuclear {GdIII7} (complex 1) and tetradecanuclear {GdIII14} (complex 2) have been synthesized using a Rhodamine 6G ligand HL (Rhodamine 6G salicylaldehyde hydrazone) and characterized. Complex 1 has a rare disc-shaped structure, where the central Gd ion was connected to the peripheral six GdIII ions via CH3O-/μ3-OH- bridges. Complex 2 has an unexpected three-layer double sandwich structure with a rare μ6-O2- ion in the center of the cluster. Magnetic studies revealed that complex 1 exhibits a magnetic entropy change of 17.4 J kg−1 K−1 at 3 K and 5 T. On the other hand, complex 2 shows a higher magnetic entropy change of 22.3 J kg−1 K−1 at 2 K and 5 T.
Keywords
lanthanide oxygen cluster; magnetocaloric effect; magnetic refrigerant materials; rhodamine ligand
Subject
Chemistry and Materials Science, Inorganic and Nuclear Chemistry
Copyright:
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