1-Ethyl-4′-(1H-indol-3-ylcarbonyl)-1′-methyl-2, 2′′-dioxodispiro[indoline-3,2′-pyrrolidine-3′, 3′′-indoline]-4′-carbonitrile dimethyl sulfoxide monosolvate

Abstract

In the title compound, C31H25N5O3·C2H6OS, the three indole/indoline units are all essentially planar with maximum deviations of 0.0172 (3), 0.053 (2) and 0.07 (2) Å. The pyrrolidine ring adopts an envelope conformation with the C atoms bearing the 1-ethyl-2-oxoindole substituent (in which the five-membered ring adopts a twisted conformation) as the flap. The dimethyl sulfoxide solvent molecule is disordered over two positions, with an occupancy factor ratio of 0.871 (4):0.129 (4). The solvent components are linked to the heterocyclic molecule via C - H⋯O and C - H⋯S hydrogen bonds. In the crystal, the solvent components are linked to the heterocyclic molecule via C - H⋯O and C - H⋯S interactions, forming R22(10) ring motifs. The molecules are further connected into a chain along the a-axis direction via N - H⋯O hydrogen bonds.