Experimental Crystal data

R factor = 0.047; wR factor = 0.135; data-to-parameter ratio = 13.1. In the title compound, C24H20N4, the azepine ring adopts a boat conformation. The dihedral angle between the benzene rings fused to the azepine ring is 49.40 (9). The triazole ring makes a dihedral angle of 77.88 (9) with the terminal phenyl ring. In the crystal, molecules are linked via C—H interactions and a parallel slipped – interaction [centroid– centroid distance = 3.7324 (9), normal distance = 3.4060 (6) and slippage = 1.526 Å], forming a three-dimensional network. Related literature For the use of dibenzo azepine derivatives in the preparation of carbamazepine, see: Rockliff & Davis (1966). For their antitumor properties, see: Al-Qawasmeh et al. (2009). For related structures, see: Abdoh et al. (2013); Manjunath et al. (2013). For ring-puckering analysis, see: Cremer & Popl