title: 1-Tetra-decyl-pyridinium bromide monohydrate.
abstract: In the title compound, C(19)H(34)N(+)·Br(-)·H(2)O, the dihedral angle between the trans-planar alkyl side chain and the pyridinium ring is 52.73 (7)°. In the crystal structure, O-H⋯Br, C-H⋯Br and C-H⋯O hydrogen bonds form a network, while the hydro-phobic alkyl chains inter-digitate, forming bilayers.
authors.affiliation: Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.
authors.forename: Deborah K
authors.initials: DK
authors.lastname: Jordan
authors.forename: Jonathan A
authors.initials: JA
authors.lastname: Kitchen
authors.forename: Dylan Y
authors.initials: DY
authors.lastname: Hegh
authors.forename: Sally
authors.initials: S
authors.lastname: Brooker
authors.forename: Eng Wui
authors.initials: EW
authors.lastname: Tan