Acta Crystallographica Section E: Crystallographic Communications | |
Crystal structure of ethyl 1′,5-dimethyl-2′′,3-dioxo-3H-dispiro[benzo[b]thiophene-2,3′-pyrrolidine-2′,3′′-indoline]-4′-carboxylate | |
Suresh, M.1  Raghunathan, R.1  Govindaraj, J.2  SubbiahPandi, A.3  Raja, R.3  | |
[1] Department of Organic Chemistry, University of Madras, Guindy campus, Chennai 602 025, India;Department of Physics, Pachaiyappa's College for Men, Kanchipuram 631 501, India;Department of Physics, Presidency College (Autonomous), Chennai 600 005, India | |
关键词: CRYSTAL STRUCTURE; DISPIRO; BENZOTHIOPHENE; PYRROLIDINE; INDOLINE; HYDROGEN BONDING; | |
DOI : 10.1107/S2056989015001528 | |
学科分类:数学(综合) | |
来源: International Union of Crystallography | |
【 摘 要 】
The title compound, C23H22N2O4S, crystallized with two independent molecules (A and B) in the asymmetric unit. They have very similar conformations with the pyrrolidine ring having a twisted conformation, on the Cspiro—Cspiro bond, in both molecules. In molecule A, the mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane of the pyrrolidine ring by 87.59 (10) and 84.51 (11)°, respectively, and to one another by 72.69 (7)°. The corresponding angles in molecule B are 87.15 (10), 84.58 (10) and 72.07 (7)°, respectively. In the crystal, the A and B molecules are linked to one another by two N—H⋯O hydrogen bonds, forming a dimer. These dimers are linked via C—H⋯O hydrogen bonds, forming a three-dimensional structure.
【 授权许可】
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