title: 1-(Piperidin-1-yl)-9,10-anthraquinone.
abstract: In the title compound, C(19)H(17)NO(2), the piperidine ring adopts a chair conformation. The mean planes of the piperidine ring and the anthracene ring system are inclined at a dihedral angle of 38.7 (1)°. In the crystal, adjacent mol-ecules are linked through C-H⋯π and π-π [centroid-centroid distance = 3.782 (1) Å] inter-actions, forming a layer parallel to the bc plane.
authors.affiliation: Faculty of Chemistry, University of Gdańsk, J. Sobieskiego 18, 80-952 Gdańsk,  Poland.
authors.forename: Elżbieta
authors.initials: E
authors.lastname: Wnuk
authors.forename: Paweł
authors.initials: P
authors.lastname: Niedziałkowski
authors.forename: Damian
authors.initials: D
authors.lastname: Trzybiński
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Ossowski