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

Acta Crystallographica Section E: Crystallographic Communications

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】

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