| Autor: |
Rghioui, Lotfi, Ammari, Lahcen El, Assani, Abderrazzak, Saadi, Mohamed |
| Předmět: |
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| Zdroj: |
Acta Crystallographica Section E: Crystallographic Communications; Jul2019, Vol. 75 Issue 7, p1041-1045, 17p |
| Abstrakt: |
The crystal structures of dirubidium potassium dysprosium bis(vanadate), Rb2KDy(VO4)2, and caesium potassium gadolinium bis(vanadate), Cs1.52K1.48Gd(VO4)2, were solved from single-crystal X-ray diffraction data. Both compounds, synthesized by the reactive flux method, crystallize in the space group P3...m1 with the glaserite structure type. VO4 tetrahedra are linked to DyO6 or GdO6 octahedra by common vertices to form sheets stacking along the c axis. The large twelve-coordinate Cs+ or Rb+ cations are sandwiched between these layers in tunnels along the a and b axes, while the K+ cations, surrounded by ten oxygen atoms, are localized in cavities. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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