Crystal structure of ethyl 2′′,3-dioxo-7′,7a'-dihydro-1′H,3H,3′H-dispiro[benzo[b]thiophene-2,6′-pyrrolo[1,2-c]thiazole-5′,3′′-indoline]-7′-carboxylate

In the title compound, C23H20N2O4S2, the central pyrrolidine ring adopts an envelope conformation with the spiro C atom, shared with the benzothiophene ring system, as the flap. The thiazole ring has a twisted conformation on the S—C bond, where the C atom is that closest to methine C atom. The mean...

Full description

Saved in:
Bibliographic Details
Published inActa crystallographica. Section E, Crystallographic communications Vol. 71; no. 3; pp. o148 - o149
Main Authors M. P. Savithri, M. Suresh, R. Raghunathan, R. Raja, A. SubbiahPandi
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.03.2015
Subjects
benzothiophene
crystal structure
dispiro
hydrogen bonds
indoline
inversion dimers
pyrrolidine
thiazole
Online AccessGet full text

Cover

More Information
Summary:In the title compound, C23H20N2O4S2, the central pyrrolidine ring adopts an envelope conformation with the spiro C atom, shared with the benzothiophene ring system, as the flap. The thiazole ring has a twisted conformation on the S—C bond, where the C atom is that closest to methine C atom. The mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane of the central pyrrolidine ring by 82.75 (8) and 80.03 (8)°, respectively, and to each other by 61.49 (6)°. In the crystal, molecules are linked via pairs of N—H...O hydrogen bonds, forming inversion dimers with an R22(8) ring motif. The dimers are linked via C—H...O and C—H...N hydrogen bonds, forming a three-dimensional structure. The ethoxycarbonyl group is disordered over two orientations, with an occupancy ratio of 0.717 (12):0.283 (12).
ISSN:2056-9890
2056-9890
DOI:10.1107/S2056989015002030