The Crystal Structure of Ba58Ga22F180O |
| |
Authors: | Anglique Pierrard Maurice Samouël Patrick Gredin Jean‐Paul Laval Ariel de Kozak |
| |
Institution: | Angélique Pierrard,Maurice Samouël,Patrick Gredin,Jean‐Paul Laval,Ariel de Kozak |
| |
Abstract: | The crystal structure of Ba58Ga22F180O is established by means of X‐ray single crystal diffraction. It is tetragonal: a = 22.033(1) Å, c = 17.626(1) Å, Z = 2. The structure is solved in the space group I4/mmm (n° 139), using 3219 independent reflections. It is mainly built from a deficient arrangement of fluorite‐type FBa4] tetrahedra connected by edges and vertices which constitutes the skeleton of the structure, giving rise to large cavities in which lie isolated fluorine ions in tetrahedral and octahedral barium environment, isolated F2Ba6] bitetrahedra, isolated barium ions in eight‐coordination of fluorine and a complex arrangement of isolated GaF6] octahedra and isolated Ga2F10O] bioctahedra. |
| |
Keywords: | Barium Gallium Fluorides Oxidefluorides Crystal structure |
|
|