Received 13 March 2009
There are two crystallographically independent molecules in the asymmetric unit of the title compound, C23H21NO3S. The indole ring system is approximately perpendicular to the sulfonyl phenyl ring in both molecules [dihedral angles = 85.42 (8) and 88.30 (9)°]. C-HO interactions between molecules stabilize the crystal structure.
For the Thorpe-Ingold effect, see: Bassindale (1984). For bond-length data, see: Allen et al. (1987). For the biological activity of sulfur-containing compounds, see: De-Benedetti et al, (1985); Krishnaiah et al. (1995).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT2902 ).
TK thanks Dr Babu Varghese, SAIF, IIT- Madras, Chennai, India, for his help with the data collection.
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