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

The title compound, CHN, 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 . The mol-ecule adopts an -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 [⋯ = 3.2514 (8) Å]. In the crystal, the mol-ecules are linked inter-molecular C-H⋯N hydrogen bonds and C-H⋯π inter-actions into a network sheet parallel to the plane. The mol-ecules of different sheets form other C-H⋯π inter-actions, thus forming a three-dimensional network.