Synthesis and crystal structure of anti -10-butyl-10,11,22,23-tetra-hydro-9 H ,21 H -5,8:15,12-bis(metheno)[1,5,11]tri-aza-cyclo-hexa-decino[1,16- a :5,6- a ']di-indole.

The title compound, C 33 H 33 N 3 , is a carbazolophane, which is a cyclo-phane composed of two carbazole fragments. It has a planar chirality but crystallizes as a racemate in the space group P . The mol-ecule adopts an anti -configuration, in which two carbazole fragments are partially overlapped. Both carbazole ring systems are slightly bent, with the C atoms at 3-positions showing the largest deviations from the mean planes. The dihedral angle between two carbazole fragments is 5.19 (3)°, allowing an intra-molecular slipped π-π inter-action [ Cg ⋯ Cg = 3.2514 (8) Å]. In the crystal, the mol-ecules are linked via inter-molecular C-H⋯N hydrogen bonds and C-H⋯π inter-actions into a network sheet parallel to the ab plane. The mol-ecules of different sheets form other C-H⋯π inter-actions, thus forming a three-dimensional network.