Abstract
In the title compound, C29H25FN2O4, the mean planes of the indole ring systems are approximately perpendicular to one another [dihedral angle = 88.3 (4)°]. The benzene ring is twisted with respect to the indole ring systems by 49.8 (5) and 77.6 (3)°. In the crystal, pairs of N-H⋯O hydrogen bonds link the mol-ecules into the inversion dimers which are further linked into supra-molecular chains propagating along the [110] direction.
Highlights
C29H25FN2O4, the mean planes of the indole ring systems are approximately perpendicular to one another [dihedral angle = 88.3 (4)]
The benzene ring is twisted with respect to the indole ring systems by 49.8 (5) and 77.6 (3)
As part of our ongoing studies of bis(indoyl)methane compounds, we report the synthesis and crystal structure of the title compound
Summary
There are abundant bis(indolyl)methane derivatives in various terrestrial and marine natural resources (Sundberg, 1996). As part of our ongoing studies of bis(indoyl)methane compounds, we report the synthesis and crystal structure of the title compound. The indole ring systems are nearly perpendicular to one another [dihedral angle = 88.3 (4)] while the benzene ring (C2–C7) is twisted with respect to the N1/C8–C15 and N2/C19–C26 indole ring systems with dihedral angles of 49.8 (5) and 77.6 (3), respectively. The carboxyl groups are approximately co-planar with their attached indole ring systems, the dihedral angles between the carboxyl groups and the mean planes of the N1/C8–C15 and N2/C19– C26 indole ring systems being 6.2 (5) and 6.4 (4), respectively. Several similar structures have been reported previously, viz.
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