8-Hydroxyquinolin-1-ium hydrogen sulfate monohydrate

In the crystal structure of the title salt hydrate, C9H8NO+·HSO4−·H2O, the quinoline N—H atoms are hydrogen bonded to the bisulfate anions. The bisulfate anions and water molecules are linked together by O—H...O hydrogen-bonding interactions. 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 R44(12) rings and C22(13) infinite chains can be identified