Abstract
There are two main molecules in asymmetric unit of the title compound, C27H21N3O6·0.5C2H5OH. In both, the indole ring systems are approximately perpendicular to each other, at dihedral angles of 69.3 (5) and 82.8(4)°. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional supra-molecular architecture. The solvent ethanol mol-ecule acts as a donor, forming an O-H⋯O hydrogen bond, reinforcing the structure.
Highlights
There are two main molecules in asymmetric unit of the title compound, C27H21N3O6Á0.5C2H5OH
Molecules are linked by N—HÁ Á ÁO and O—HÁ Á ÁO hydrogen bonds into a three-dimensional supramolecular architecture
As part of our ongoing studies of bis(indoyl)methane compounds, we report the synthesis and crystal structure of the title bis(indoly)methane compound
Summary
There are abundant bis(indolyl)methane derivatives in various terrestrial and marine natural resources (Sundberg, 1996). They can be used as precursors for MRI necrosis avid contrast agents (Ni, 2008). In the first bisindole molhe two indole ring systems are nearly perpendicular to one another [dihedral angle = 69.3 (5)] while the benzene ring (C2–C7) is twisted to the N2/C8–C15 and N3/C18–C25 indole ring systems by dihedral angles of 44.3 (3) and 77.6 (4), respectively. For the second bisindole molecule, the two indole ring systems are nearly perpendicular to one another [dihedral angle = 82.8 (4)] while the benzene ring (C29–C34) is twisted to the N5/C35– C42 and N6/C45–C52 indole ring systems with dihedral angles of 88.5 (5) and 81.8 (4), respectively
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