[Open access]  [Contents scheme]  Acta Cryst. (2013). E69,
o1623-o1624 [ doi:10.1107/S1600536813027244 ]  1-Methyl-4-[(E)-
2-(3-hy­droxy-4-meth­oxy­phen­yl)ethen­yl]pyridinium
4-bromo­benzene­sulfonate monohydrate  S. Chantrapromma, P.
Ruanwas, B. Jindawong and H.-K. Fun  Abstract: In the title
hydrated salt, C15H16NO2+·C6H4BrO3S-·H2O, the cation exists in
an E conformation with respect to the ethenyl bond and is almost
planar, with a dihedral angle of 2.62 (12)° between the planes
of the pyridinium and benzene rings. The meth­oxy substituent
deviates slightly from the plane of its attached benzene ring
[Cmeth­yl-O-C-C torsion angle = -11.6 (6)°]. In the crystal, the
cations, anion and water mol­ecules are linked together into
chains along [010] by O-H...O hydrogen bonds and weak C-H...O
inter­actions. There is a short Br...O contact [3.029 (2) Å].
The crystal structure also features C-H...[pi] inter­actions
involving the benzene ring of the anion.  Copyright ©
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