Experimental

R factor = 0.031; wR factor = 0.047; data-to-parameter ratio = 27.9. In the title molecule, C18H12BrN, the 4-bromophenyl ring is inclined to the mean plane of the carbazole moiety (r.m.s. devation = 0.027 Å) by 49.87 (5). In the crystal, molecules stack along [001] and are linked by C—H interactions forming a corrugated two-dimensional network lying parallel to (100). Related literature For isostructural crystal structures, see: Saha & Samanta (1999); Chen et al. (2005). For related carbazole-based crystal structures, see: Kim et al. (2011); Liu et al. (2010); Wu et al. (2007); Chen et al. (2012). For a chemically related non-isostructural compound, see: Xie et al. (2012). For applications of arylamines as functional materials, see: Shirota & Kageyama (2007); Tao et al. (2011); Yook & Lee (2012); Kautny et al. (2014). For isostructurality, see: Kálmán et al. (1999). For merotypism and its application to organic compounds, see: Ferraris et al. (2004); Stöger et al. (2012). For the synthesis of the title compound, see: Xu et al. (2007)