title: 1-Nitro-9H-carbazole.
abstract: In the title mol-ecule, 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 mol-ecules 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).
authors: Institute for Applied Synthetic Chemistry, Division Organic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-OC, A-1060 Vienna, Austria.
authors: Paul
authors: P
authors: Kautny
authors: Institute for Chemical Technologies and Analytics, Division Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria.
authors: Berthold
authors: B
authors: Stöger