2-[(E)-2-(4-Chlorophenyl)ethenyl]-1-methylpyridinium 4-methoxybenzenesulfonate

Abstract

In the asymmetric unit of the title salt, C14H13ClN+·C7H7O4S−, there are two crystallographically independent mol­ecules for each component. Each cation adopts an E configuration with respect to the C=C bond and is slightly twisted; the dihedral angle between the pyridinium and benzene rings is 6.53 (7)° for one mol­ecule and 5.30 (7)° for the other. The meth­oxy groups in the anion mol­ecules are each twisted from the mean plane of benzene ring with torsion angles of 16.38 (19) and 4.32 (19)°. In the crystal structure, the cations are stacked in an anti­parallel manner along the a axis and the anions are linked together by C—H⋯O inter­actions into a layer parallel to (001). The anion layers are further linked to adjacent cations by C—H⋯O inter­actions. C—H⋯π inter­actions involving the benzene rings of both ions are also observed.

1-Methyl-4-[(E)-2-(3-hydroxy-4-methoxyphenyl)ethenyl]pyridinium 4-bromobenzenesulfonate monohydrate

“…1). All bond lengths (Allen et al, 1987) and angles in both the cation and anion are normal and compare well with those found in closely related structures (Chanawanno et al, 2009;Fun et al, 2011;Jindawong et al, 2005). The cation exists in an E configuration with respect to the C13 ═C14 double bond [1.326 (5) Å] and the C12-C13-C14-C15 torsion angle is 179.3 (3)°.…”

“…For applications of stilbene derivatives, see: Belluti et al (2010); Chanawanno et al (2010); Frombaum et al (2012); Hussain et al (2009); Jindawong et al (2005); Li et al (2013); Ruanwas et al (2010). For related structures, see: Chanawanno et al (2009); Fun et al (2011); Jindawong et al (2005). For the stability of the temperature controller used in the data collection, see : Cosier & Glazer, (1986).…”