Synthesis and crystal structure of anti-10-butyl-10,11,22,23-tetra­hydro-9H,21H-5,8:15,12-bis(metheno)[1,5,11]tri­aza­cyclo­hexa­decino[1,16-a:5,6-a′]di­indole

The title compound, C(33)H(33)N(3), is a carbazolophane, which is a cyclo­phane composed of two carbazole fragments. It has a planar chirality but crystallizes as a racemate in the space group P [Image: see text] . The mol­ecule 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 intra­molecular slipped π–π inter­action [Cg⋯Cg = 3.2514 (8) Å]. In the crystal, the mol­ecules are linked via inter­molecular C—H⋯N hydrogen bonds and C—H⋯π inter­actions into a network sheet parallel to the ab plane. The mol­ecules of different sheets form other C—H⋯π inter­actions, thus forming a three-dimensional network.