Crystal structure of dimethyl 3,3′-[(3-fluoro­phenyl)methyl­ene]bis­(1H-indole-2-carboxyl­ate)

In the title compound, C(27)H(21)FN(2)O(4), the mean planes of the two indole ring systems (r.m.s. deviations = 0.0166 and 0.0086 Å) are approximately perpendic­ular to one another, making a dihedral angle of 87.8 (5)°; the fluorobenzene ring is twisted with respect to the mean planes of the two indole ring systems at 82.7 (5) and 85.5 (3)°. In the crystal, pairs of N—H⋯O hydrogen bonds link the mol­ecules into the inversion dimers, which are further linked by N—H⋯O hydrogen bonds into supra­molecular chains propagating along the b-axis direction. Weak C—H⋯π inter­actions are observed between neighbouring chains.