Title of article :
Two new glaserite-type orthovanadates: Rb2KDy(VO4)2 and Cs1.52K1.48Gd(VO4)2
Author/Authors :
Rghioui, Lotfi Laboratoire de Spectroscopie, Modélisation Moléculaire, Matériaux, Nanomatériaux, Eau et Environnement (CERNE2D) - Faculty of Sciences - Mohammed V University in Rabat, Morocco , Ammari,Lahcen El Laboratoire de Chimie Appliquée des Matériaux - Centre des Sciences des Matériaux -Faculty of Sciences - Mohammed V University in Rabat, Morocco , Assani, Abderrazzak Laboratoire de Chimie Appliquée des Matériaux - Centre des Sciences des Matériaux -Faculty of Sciences - Mohammed V University in Rabat, Morocco , Saadi, Mohamed Laboratoire de Chimie Appliquée des Matériaux - Centre des Sciences des Matériaux -Faculty of Sciences - Mohammed V University in Rabat, Morocco
Abstract :
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 P3m1 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
Keywords :
IR and Raman spectroscopy , orthovanadates , X-ray diffraction , R and Raman spectroscopy , crystal structure , Cs1.52K1.48Gd(VO4)2 , Rb2KDy(VO4)2
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
