Crystal structures of two new carbazole derivatives: ethyl 9-(benzenesulfonyl)-2-(4-fluoro-2-nitrophenyl)-6-methoxy-9<i>H</i>-carbazole-3-carboxylate and 12-(benzenesulfonyl)-12<i>H</i>-quinolino[4,3-<i>b</i>]carbazole
Acta crystallographica. Section E, Crystallographic communications