2-[(E)-2-(4-Ethoxyphenyl)ethenyl]-1-methylpyridinium 4-bromobenzenesulfonate monohydrate

Abstract

In the title compound, C16H18NO+·C6H4BrO3S−·H2O, the cation exists in an E configuration with respect to the ethenyl bond and is slightly twisted with a dihedral angle of 8.5 (2)° between pyridinium and benzene rings. In the crystal, the cations are arranged in layers parallel to (100), with π–π inter­actions between pyridinium and benzene rings [centroid–centroid distances = 3.651 (3) and 3.613 (3) Å]. The anions and water mol­ecules are located between the cationic layers. The ions and water mol­ecules are linked into a three-dimensional framework by O—H⋯O and C—H⋯O hydrogen bonds.

2-[(E)-2-(4-Ethoxyphenyl)ethenyl]-1-methylpyridinium 4-chlorobenzenesulfonate monohydrate

“…In the title compound ( (Table 1). Bond distances in (I) have normal values (Allen et al, 1987) and are comparable to those observed in a related structure (Fun et al, 2010).…”

“…For background to and the biological activity of quaternary ammonium compounds, see: Armitage et al (1929); Browning et al (1922); Chanawanno et al (2010); Chantrapromma et al (2010); Wainwright & Kristiansen (2003). For related structures, see: Fun et al (2010). For bond-length data, see: Allen et al (1987).…”