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Figure 3
(a) The Mn1O5 square pyramids (ball and stick drawing) share a common edge, O2—O2, forming an Mn2O8 unit. (b) The B2O3 unit (polyhedral drawing), shares two corners with neighboring MnO5 square pyramids (ball and stick drawing) through O1 and O2. The only unshared oxygen, O4, of the pyroborate group forms a bond with a Ba atom.

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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