Journal
CRYSTENGCOMM
Volume 25, Issue 2, Pages 309-313Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ce01350a
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Two coordination polymers with a three-dimensional framework based on Ln(7) units were synthesized. They consist of garland-shaped Ln(7) building units with a zigzag arrangement and one-dimensional round channels. 1Gd exhibits a good magnetocaloric effect, with a significant -Delta S-m(max) at 3K and Delta H = 7T due to the larger mass ratio and increased magnetic density of the 3D structure.
Two coordination polymers [Ln(7)(IDA)(3)(HCOO)(3)(mu(3)-OH)(8)(H2O)(6)]Cl-4 center dot 8H(2)O (Ln = Gd, Dy; IDA(-) = iminodiacetic anion) featuring a three-dimensional (3D) framework based on Ln(7) units were synthesized. According to X-ray structural analysis, the two compounds are isostructural; both consist of a garland-shaped Ln(7) building unit with a zigzag arrangement along the c-axis and one-dimensional round channels inside. Magnetic investigations demonstrate that 1Gd shows a good MCE with -Delta S-m(max) = 40.85 J kg(-1) K-1 at 3 K and Delta H = 7 T due to the larger mass ratio (metal/ligand) and increased magnetic density of the 3D structure.
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