title: 1-Methyl-2-[(E)-2,4,5-trimeth-oxy-styr-yl]-pyridinium iodide.
abstract: In the title compound, C(17)H(20)NO(3) (+)·I(-), the cation exists in the E configuration. The pyridinium and benzene rings are close to coplanar, with a dihedral angle of 7.43 (12)° between them. The three meth-oxy groups of 2,4,5-trimeth-oxy-phenyl are essentially coplanar with the benzene plane, with C-O-C-C torsion angles of 1.0 (3), -1.9 (3) and 3.6 (3)°. A weak intra-molecular C-H⋯O inter-action generates an S(6) ring motif. In the crystal, the cations are stacked in columns in an anti-parallel manner along the a axis through π-π inter-actions, with a centroid-centroid distance of 3.7714 (16) Å. The iodide anion is situated between the columns and linked to the cation by a weak C-H⋯I inter-action.
authors: Charoensak
authors: C
authors: Mueangkeaw
authors: Suchada
authors: S
authors: Chantrapromma
authors: Pumsak
authors: P
authors: Ruanwas
authors: Hoong-Kun
authors: HK
authors: Fun
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