Acta Crystallographica Section E: Crystallographic Communications | |
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 | |
Suresh, M.1  Raghunathan, R.1  SubbiahPandi, A.2  Raja, R.2  Savithri, M.P.3  | |
[1] Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India;Department of Physics, Presidency College (Autonomous), Chennai 600 005, India;Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India | |
关键词: CRYSTAL STRUCTURE; DISPIRO; BENZOTHIOPHENE; THIAZOLE; PYRROLIDINE; INDOLINE; HYDROGEN BONDS; INVERSION DIMERS; | |
DOI : 10.1107/S2056989015002030 | |
学科分类:数学(综合) | |
来源: International Union of Crystallography | |
【 摘 要 】
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).
【 授权许可】
CC BY
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