2 p -4 f MOFs based on naphthalene-1,4,5,8-tetracarboxylate with magnetocaloric effect and slow magnetic relaxation properties
| Autor: | Fu-Yong Liang, Sui-Jun Liu, Zi-Yi Du, Shi-Yong Zhang, He-Rui Wen, Xiao-Neng Lu |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Chemistry Inorganic chemistry Infrared spectroscopy 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation 0104 chemical sciences Inorganic Chemistry Crystallography Materials Chemistry Magnetic refrigeration Antiferromagnetism Orthorhombic crystal system Physical and Theoretical Chemistry Isostructural 0210 nano-technology |
| Zdroj: | Polyhedron. 132:123-129 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2017.04.027 |
| Popis: | A family of new three-dimensional (3D) 2p-4f metal-organic frameworks (MOFs), namely [Na2Ln(L)(OH)(H2O)3]n (H4L = naphthalene-1,4,5,8-tetracarboxylic acid, Ln = Gd (1), Tb (2) and Dy (3)) have been synthesized by using hydrothermal method and structurally characterized by single-crystal X-ray diffraction, powder X-ray diffraction and IR spectra. Complexes 1–3 are isostructural and crystallize in the space group Cmca of orthorhombic system. Their crystal structures can be described as a kind of homeomorphism configurations with 3D framework. Magnetic measurements indicated that complex 1 exhibits antiferromagnetic behavior and magnetocaloric effect with −ΔSmmax = 28.8 J kg−1 K−1 (ΔH = 7 T and T = 2 K), and complex 2 exhibits field-induced slow magnetic relaxation behaviors. |
| Databáze: | OpenAIRE |
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