Acta Crystallographica Section E

Structure Reports Online

Volume 64, Part 3 (March 2008)

organic compounds

sj2466 scheme

Acta Cryst. (2008). E64, o642-o643 [ doi:10.1107/S1600536808005205 ]

(E)-2-[4-(Dimethylamino)styryl]-1-methylquinolinium 4-methoxybenzenesulfonate monohydrate

T. Kobkeatthawin, P. Ruanwas, S. Chantrapromma and H.-K. Fun

Abstract: In the title compound, C₂₀H₂₁N₂⁺·C₇H₇O₄S^-·H₂O, the cation is nearly planar and exists in the E configuration. The cations and anions form individual chains along the b axis and are interconnected by weak C-HO interactions. The 4-methoxybenzensulfonate anions are linked to water molecules through O-HO hydrogen bonds, forming a three-dimensional network. The crystal structure is further stabilized by a C-H [pi] interaction involving the methoxyphenyl ring. The sulfonate anion is also involved in a weak intramolecular C-HO interaction which generates an S(5) ring motif.