title: 9-(4-Nitro-phenyl-sulfon-yl)-9H-carbazole.
abstract: In the title mol-ecule, C(18)H(12)N(2)O(4)S, the carbazole skeleton is nearly planar [maximum deviation = 0.037 (1) Å] and is oriented at a dihedral angle of 73.73 (5)° with respect to the benzene ring. An intra-molecular C-H⋯O hydrogen bond links a nitro O atom to the carbazole skeleton. In the crystal, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network. π-π contacts between inversion-related benzene rings [centroid-centroid distance = 3.7828 (8) Å] and two weak C-H⋯π inter-actions may also stabilize the structure.
authors.forename: Nesimi
authors.initials: N
authors.lastname: Uludağ
authors.forename: Murat
authors.initials: M
authors.lastname: Ateş
authors.forename: Barış
authors.initials: B
authors.lastname: Tercan
authors.forename: Tuncer
authors.initials: T
authors.lastname: Hökelek