 | Acta Crystallographica Section E Acta Crystallographica Section E CRYSTALLOGRAPHIC COMMUNICATIONS |
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![[Figure 1]](hb6323fig1mag.jpg)
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| Figure 1 a) Molecular structure of indigo B (50% probability displacement ellipsoids); b) packing diagram of indigo B showing π–π-stacking interactions, inter- (N⋯O 2.883 (2) Å) and intramolecular (N⋯O 2.925 (2) Å) hydrogen bonds. |
![[Figure 1]](hb6323fig1.jpg)
| CRYSTALLOGRAPHIC COMMUNICATIONS |
ISSN: 2056-9890
