Figure 4
(a) Extended structure of BaMnB2O5 viewed approximately along the [101] direction. The connectivity of the barium atoms is not shown for clarity. (b) Partial structure of [MnB2O5]2− slab viewed along [100] where the polyhedral drawing represents MnO5 square pyramids and B2O5 units are represented by ball-and-stick drawing. (c) Edge-sharing and corner-sharing MnO5 units corner-share with B2O5 pyroborate groups (polyhedral drawing) to create a cage. (d) Stick drawing of one cage with empty space in the middle. |