1-Ethyl-4'-(1H-indol-3-ylcarbon-yl)-1'-methyl-2,2''-dioxodi-spiro-[indoline-3,2'-pyrrolidine-3',3''-indoline]-4'-carbo-nitrile dimethyl sulfoxide monosolvate

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 69; no. Pt 8; pp. o1328 - o1329
• Main Authors: Inglebert, S Antony, Arun, Yuvaraj, Sethusankar, K, Perumal, Paramasivam T
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 2013
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536813020485

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-oxo-indole substituent (in which the five-membered ring adopts a twisted conformation) as the flap. The dimethyl sulfoxide solvent mol-ecule 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 mol-ecule 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 inter-actions, forming R 2 (2)(10) ring motifs. The mol-ecules are further connected into a chain along the a-axis direction via N-H⋯O hydrogen bonds.