期刊
FRONTIERS IN CHEMISTRY
卷 10, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2022.963203
关键词
magnetocaloric effect; polynuclear; lanthanide; Schiff-based ligand; magnetic entropy
资金
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province [22075152, 22101144]
- Science and Technology Project Fund of Nantong [BK20210835]
- [JC2020130]
- [JC2020133]
- [JC2020134]
The magnetocaloric effect is a promising feature of molecular-based magnetic materials. Three Gd-based magnetic refrigerant materials were reported in this study, showing excellent potential as cryogenic magnetic coolants.
Magnetocaloric effect (MCE) is one of the most promising features of molecular-based magnetic materials. We reported three Gd-based magnetic refrigerant materials, namely, Gd-2(L)(NO3)(H2O)?CH3CN?H2O (1, H2L = (Z)-N-[(1E)-(2-hydroxy-3-methphenyl)methylidene]pyrazine-2-carbohydrazonic acid), {Gd-6(L)(6)(CO3)(2)(CH3OH)(2)(H2O)(3)Cl}Cl?4CH(3)CN (2), and Gd-8(L)(8)(CO3)(4)(H2O)(8)?2H(2)O (3). Complex 1 contains two Gd-III ions linked by two eta (2):eta (1):eta (1):eta (1):mu (2)-L2- ligands, which are seven-coordinated in a capped trigonal prism, and complex 2 possesses six Gd-III ions, contributing to a triangular prism configuration. For complex 3, eight Gd-III ions form a distorted cube arrangement. Moreover, the large values of magnetic entropy in the three complexes prove to be excellent candidates as cryogenic magnetic coolants.
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