Figure 2
Central [Yb6F8] core of the title structure with additional O atoms coordinating to YbIII ions, with the cation partial occupation site occupied by NH4+ (a) and H3O+ (b). For YbIII ions with square-antiprismatic coordination, polyhedra are drawn in red, for YbIII ions with monocapped square-antiprismatic coordination, polyhedra are drawn in blue; color code: O (red), F (green), Yb (gray). |