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Figure 3
Packing diagram of (I)[link] with the outline of the unit cell. The alternating layers of barium cations and 2-amino-3-oxo-3H-phenoxazine-8-sulfonate anions are evident. The independent anions are marked 1 and 2, correlating with the last digit in the atom labels. O—H⋯O and N—H⋯O hydrogen bonds are shown as striped cylinders. Anions related by the inversion at the center of the cell are marked 2′ and 1′. H atoms bonded to C atoms have been omitted. Displacement ellipsoids are drawn at the 70% probability level.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 81| Part 10| October 2025| Pages 982-986
https://doi.org/10.1107/S2056989025008242
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