Affiliations 

  • 1 X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
  • 2 Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
  • 3 Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
Acta Crystallogr Sect E Struct Rep Online, 2013 Nov 9;69(Pt 12):o1753-4.
PMID: 24454207 DOI: 10.1107/S1600536813030080

Abstract

In the title mixed salt, 2C16H15N2 (+)·C6H4ClO3S(-)·NO3 (-), one of the cations shows whole mol-ecule disorder over two sets of sites in a 0.711 (7):0.289 (7) ratio. The 4-chorobenzenesulfon-ate 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 anti-parallel manner approximately along the a-axis direction and linked with the anions via N-H⋯O hydrogen bonds and C-H⋯O inter-actions, generating a three-dimensional network. Weak C-H⋯π and π-π inter-actions [with centroid-centroid distances of 3.561 (2)-3.969 (7) Å] are also observed.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.