title: 2-(Ammonio-meth-yl)pyridinium sulfate monohydrate.
abstract: In the crystal of the title hydrated molecular salt, C(6)H(10)N(2) (2+)·SO(4) (2-)·H(2)O, N-H⋯O and O-H⋯O hydrogen bonds link the mol-ecules into layers parallel to the ab plane. C-H⋯O hydrogen bonds are observed both within these layers and between mol-ecules and ions in adjacent layers.
authors.affiliation: Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9300,  South Africa.
authors.forename: M
authors.initials: M
authors.lastname: Schutte
authors.forename: H G
authors.initials: HG
authors.lastname: Visser
authors.forename: A
authors.initials: A
authors.lastname: Roodt