title: 5-(4-Bromo-phen-yl)-1,2,3,4-tetra-hydro-benzo[a]phenanthridine.
abstract: The title compound, C(23)H(18)BrN, was synthesized by the reaction of 4-bromo-benzaldehyde, naphthalen-2-amine and cyclo-hexa-none in tetra-hydro-furan, catalyzed by iodine. The saturated six-membered ring adopts a half-chair conformation, and the four vicinal rings form a helical conformation, which results in a significant deviation from planarity for the pyridine ring. In the crystal, a weak C-H⋯π inter-action occurs, leading to inversion dimers.
authors.affiliation: Division of Science and Technology, Xuzhou Institute of Architectural Technology, Xuzhou 221116, People's Republic of China.
authors.forename: Heng-Shen
authors.initials: HS
authors.lastname: Xie
authors.forename: Ai-Ling
authors.initials: AL
authors.lastname: Zhang
authors.forename: Ling
authors.initials: L
authors.lastname: Su