title: 8-Hy-droxy-quinolin-1-ium hydrogen sulfate monohydrate.
abstract: In the crystal structure of the title salt hydrate, C9H8NO(+)·HSO4 (-)·H2O, the quinoline N-H atoms are hydrogen bonded to the bis-ulfate anions. The bis-ulfate anions and water mol-ecules are linked together by O-H⋯O hydrogen-bonding inter-actions. The cations and anions form separate layers alternating along the c axis, which are linked by N-H⋯O and O-H⋯O hydrogen bonds into a two-dimensional network parallel to (100). Further O-H⋯O contacts connect these layers, forming a three-dimensional network, in which two R 4 (4)(12) rings and C 2 (2)(13) infinite chains can be identified.
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine 1, 25000, Algeria.
authors.forename: Maamar
authors.initials: M
authors.lastname: Damous
authors.affiliation: Laboratory of Solid State Chemistry and Mössbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H3G 1M8, Canada.
authors.forename: George
authors.initials: G
authors.lastname: Dénès
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine 1, 25000, Algeria ; Département Sciences de la Matière, Faculté des Sciences Exactes et Sciences de la Nature et de la Vie, Université Oum El Bouaghi 04000, Algeria.
authors.forename: Sofiane
authors.initials: S
authors.lastname: Bouacida
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine 1, 25000, Algeria.
authors.forename: Meriem
authors.initials: M
authors.lastname: Hamlaoui
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine 1, 25000, Algeria.
authors.forename: Hocine
authors.initials: H
authors.lastname: Merazig
authors.affiliation: Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 route de Narbonne, 31077 Toulouse Cedex, France.
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Daran