Figure 2
The crystal structure of the usovite-type title compound, emphasizing the formation of the layered 2∞[CaFeAl2F14]4− framework parallel to (100), separated by Ba2+ cations. Displacement ellipsoids are drawn at the 74% probability level. The colour code is as in Fig. 1, with [CaF8] polyhedra in blue and Ba atoms in red. |