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Figure 1
(a) Perspective view of the structure of BaMnB2O5 viewed along the c axis. The wavy and dotted line (left) indicates the zigzag arrays of Ba atoms. Only one Ba atom with bonds is drawn for clarity, demonstrating the function of Ba—O bonds with regard to holding neighboring [MnB2O5]2− slabs. (b) Polyhedral representation showing the 2∞[MnB2O5]2− spiral framework centered around the 21 screw axis of the unit cell. (c) Polyhedral representation showing the arrangement of isolated pyroborate units viewed approximately along the [101] direction.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 72| Part 9| September 2016| Pages 1315-1320
https://doi.org/10.1107/S2056989016013074
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