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Acta Cryst. (2014). E70, o28  [ doi:10.1107/S1600536813032704 ]


P. Kautny and B. Stöger

Abstract: In the title mol­ecule, C12H8N2O2, the nitro group is tilted slightly with respect to the carbazole moiety [angle between the least-squares planes = 4.43 (9)°]. In the crystal, the mol­ecules are connected via pairs of N-H...O hydrogen bonds into dimers with -1 symmetry. The dimers in turn are arranged into layers parallel to (10-1).

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