title: 4-[(2'-Cyano-biphenyl-4-yl)meth-yl]morpholin-4-ium hexa-fluoridophosphate.
abstract: In the cation of the title compound, C(18)H(19)N(2)O(+)·PF(6) (-), the morpholine ring adopts the usual chair conformation and the dihedral angle between the benzene rings is 67.55 (11)°. The F atoms of the anion are disordered over two orientations with a refined occupancy ratio of 0.65 (2):0.35 (2). In the crystal, inter-molecular N-H⋯N hydrogen bonds link the cations into chains parallel to the c axis. The crystal packing is further enforced by inter-ionic C-H⋯F hydrogen bonds.
authors.affiliation: Department of Applied Chemistry, Nanjing College of Chemical Technology, Nanjing 210048,  People's Republic of China.
authors.forename: Hua Yu
authors.initials: HY
authors.lastname: Xue
authors.forename: Shi Juan
authors.initials: SJ
authors.lastname: Wang