Crystal structure of 2-(2,4-di­chloro­phen­yl)-4-hydroxy-9-phenyl­sulfonyl-9H-carbazole-3-carbaldehyde

The hy­droxy group in this carbazole derivative is involved in an intra­molecular O—H...O hydrogen bond, which generates an S(6) graph-set motif. In the crystal, pairs of C—H...Cl hydrogen bonds link mol­ecules into inversion dimers with an R²₂(26) motif. Weak C—H...O inter­actions further link these dimers into ribbons propagating in [100].