title: 3-Methyl-1-tosyl-1H-indole-2-carbaldehyde.
abstract: The title indole derivative, C(17)H(15)NO(3)S, crystallizes with two independent mol-ecules in the asymmetric unit. The benzene ring of the tosyl group is almost perpedicular to the indole ring in both mol-ecules, with inter-planar angles of 82.60 (5)° and 81.82 (6)°. The two mol-ecules are, as a consequence, able to form an almost centrosymmetric non-bonded dimer, in which the molecules are linked by pairs of C-H⋯π inter-actions. The crystal structure displays a three-dimensional network of C-H⋯O inter-actions. A π-π inter-action occurs between inversion-related indole rings with a centroid-centroid distance of 3.6774 (16) Å and an inter-planar angle of 1.53 (15)°. This inter-action leads to a stacking of mol-ecules along the a axis.
authors: Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits 2050, Johannesburg,  South Africa.
authors: Priyamvada
authors: P
authors: Pradeep
authors: Sanaz
authors: S
authors: Khorasani
authors: Charles B
authors: CB
authors: de Koning
authors: Manuel A
authors: MA
authors: Fernandes