title: 4-Benzyl-4-ethyl-morpholin-1-ium hexa-fluoro-phosphate.
abstract: The asymmetric unit of the title compound, C(13)H(20)NO(+)·PF(6) (-), contains two cations, one complete anion and two half hexa-fluoro-phosphate anions having crystallographically imposed twofold rotation symmetry. In the cations, the morpholine rings are in a chair conformation. In the crystal, ions are linked by weak C-H⋯F hydrogen bonds into a three-dimensional network.
authors.affiliation: Department of Enviromental and Chemistry Engineering, Tianjin Polytechnic University, State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin 300160,  People's Republic of China.
authors.forename: Fang
authors.initials: F
authors.lastname: Yang
authors.forename: Hongjun
authors.initials: H
authors.lastname: Zang
authors.forename: Bowen
authors.initials: B
authors.lastname: Cheng
authors.forename: Xianlin
authors.initials: X
authors.lastname: Xu
authors.forename: Yuanlin
authors.initials: Y
authors.lastname: Ren