Acta Cryst. (2013). E69, o1753-o1754
[ doi:10.1107/S1600536813030080 ]
Abstract: In the title mixed salt, 2C16H15N2+·C6H4ClO3S-·NO3-, one of the cations shows whole molecule disorder over two sets of sites in a 0.711 (7):0.289 (7) ratio. The 4-chorobenzenesulfonate anion is also disordered over two orientations in a 0.503 (6):0.497 (6) ratio. The cations are close to planar, the dihedral angles between the pyridinium and indole rings being 1.48 (3)° in the ordered cation, and 5.62 (3) and 2.45 (3)°, respectively, for the major and minor components of the disordered cation. In the crystal, the cations are stacked in an antiparallel manner approximately along the a-axis direction and linked with the anions via N-HO hydrogen bonds and C-HO interactions, generating a three-dimensional network. Weak C-H and - interactions [with centroid-centroid distances of 3.561 (2)-3.969 (7) Å] are also observed.
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