Synthesis, crystal structures and physical properties of two new sulfates KYb(SO4)2·H2O and KYb(SO4)F2
| Autor: | Jinyang Li, Xing Huang, Zhiying Zhao, Mengsi Zhang, Zhangzhen He |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Ytterbium
Materials science Band gap chemistry.chemical_element 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography Paramagnetism chemistry Materials Chemistry Ceramics and Composites Tetrahedron Antiferromagnetism Physical and Theoretical Chemistry 0210 nano-technology Powder diffraction Monoclinic crystal system |
| Zdroj: | Journal of Solid State Chemistry. 294:121822 |
| ISSN: | 0022-4596 |
| Popis: | Two new potassium ytterbium sulfates KYb(SO4)2·H2O and KYb(SO4)F2 have been obtained by a conventional hydrothermal method, which are found to crystallize in the monoclinic system with space group P21/n and P21/m, respectively. KYb(SO4)2·H2O features a three-dimensional open framework built by isolated YbO4 polyhedra and SO4 tetrahedra, while KYb(SO4)F2 exhibits a zigzag-chain structure built by YbO4F4 polyhedra running along [010] direction. Magnetic measurements indicate that both of two compounds display a paramagnetic behavior down to 2 K with a dominant antiferromagnetic interactions between ytterbium ions. TGA and temperature-dependent PXRD measurements verify the excellent thermal stability of their frameworks. Solid-state UV–vis–NIR diffuse reflectance spectra show that they have wide optical band gaps of 4.95 eV and 5.36 eV, respectively. |
| Databáze: | OpenAIRE |
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