title: 3-Hydroxy-pyridinium hydrogen chloranilate monohydrate.
abstract: In the title salt hydrate, C(5)H(6)NO(+)·C(6)HCl(2)O(4) (-)·H(2)O, the three components are held together by O-H⋯O and N-H⋯O hydrogen bonds, as well as by C-H⋯O contacts, forming a double-tape structure along the c axis. Within each tape, the pyridinium ring and the chloranilate ring are almost coplanar, forming a dihedral angle of 2.35 (7)°.
authors.affiliation: Department of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan.
authors.forename: Kazuma
authors.initials: K
authors.lastname: Gotoh
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ishida