Acta Cryst. (2013). E69, o941-o942 [ doi:10.1107/S1600536813013330 ]
Abstract: The title salt, C8H12NO+·Br-·H2O, is isomorphous with the chloride analogue [Seethalakshmi et al. (2013). Acta Cryst. E69, o835-o836]. In the solid state, the cations, anions and water molecules are interlinked by a network of O-HO, O-HBr and C-HBr interactions. The water molecule makes two O-HBr hydrogen bonds, generating  zigzag chains of alternating water molecules and bromide anions. The cation is involved in two intermolecular C-HCl interactions in the chloride salt, whereas three intermolecular C-HBr interactions are observed in the title bromide salt. This additional intermolecular C-HBr interaction links the adjacent water and bromide zigzag chains via cationic molecules. In addition, weak - stacking interactions are observed between pyridinium rings [centroid-centroid distance = 3.5664 (13) Å].
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