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Savithri MP, Raja R, Kathirvelan D, Reddy BSR, SubbiahPandi A. Crystal structure of 3'-(1H-indole-3-carbon-yl)-1'-methyl-2-oxo-4'-(4-oxo-4H-chromen-3-yl)spiro-[indoline-3,2'-pyrrolidine]-3'-carbo-nitrile. Acta Crystallogr E Crystallogr Commun 2015; 71:o898-9. [PMID: 26594587 PMCID: PMC4645027 DOI: 10.1107/s2056989015020174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 10/26/2015] [Indexed: 11/11/2022]
Abstract
In the title compound, C31H22N4O4, the pyrrolidine ring adopts a twist conformation on the N—CH2 bond. The indolin-2-one and the 1H-indole rings are nearly planar (r.m.s. deviations = 0.06 and 0.011 Å, respectively) and are inclined to one another by 34.19 (9)°. The chromene ring system is also nearly planar (r.m.s. deviation = 0.029 Å). It is almost normal to the 1H-indole ring system, with a dihedral angle of 88.71 (8)°, and is inclined to the indolin-2-one ring system by 72.76 (8)°. In the crystal, molecules are linked via N—H⋯O hydrogen bonds, forming slabs parallel to (10-1). The slabs are linked by C—H⋯O hydrogen bonds, forming a three-dimensional structure.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - D Kathirvelan
- Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - B S R Reddy
- Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India ; Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
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Savithri MP, Suresh M, Raghunathan R, Vimala G, SubbiahPandi A. Crystal structure of methyl 3-(3-fluoro-phen-yl)-1-methyl-1,3a,4,9b-tetra-hydro-3H-thio-chromeno[4,3-c]isoxazole-3a-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2015; 71:o600-1. [PMID: 26396818 PMCID: PMC4571418 DOI: 10.1107/s2056989015013651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 07/17/2015] [Indexed: 11/11/2022]
Abstract
In the title compound, C19H18FNO3S, the five-membered oxazolidine ring adopts an envelope conformation with the methine C atom of the fused bond as the flap. Its mean plane is oriented at a dihedral angle of 50.38 (1)° with respect to the fluorophenyl ring. The six-membered thiopyran ring has a half-chair conformation and its mean plane is almost coplanar with the fused benzene ring, making a dihedral angle of 4.94 (10)°. The two aromatic rings are inclined to one another by 85.96 (11)°, and the mean planes of the oxazolidine and thiopyran rings are inclined to one another by 57.64 (12)°. In the crystal, molecules are linked by C—H⋯π interactions, forming a three-dimensional structure.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - M Suresh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - G Vimala
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India ; Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of methyl 7-phenyl-6a,7,7a,8,9,10-hexa-hydro-6H,11aH-thio-chromeno[3,4-b]pyrrolizine-6a--carbox-ylate. Acta Crystallogr E Crystallogr Commun 2015; 71:o627-8. [PMID: 26396832 PMCID: PMC4571432 DOI: 10.1107/s2056989015014024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 07/23/2015] [Indexed: 11/16/2022]
Abstract
In the title compound, C22H23NO2S, the inner pyrrolidine ring (A) adopts an envelope conformation with the methine C atom opposite the fused C—N bond as the flap. The thiopyran ring (C) has a half-chair conformation and its mean plane is inclined to the fused benzene ring by 1.74 (11)°, and by 60.52 (11)° to the mean plane of pyrrolidine ring A. In the outer pyrrolidine ring (B), the C atom opposite the fused C—N bond is disordered [site-occupancy ratio = 0.427 (13):0.573 (13)] and both rings have envelope conformations, with the disordered C atom as the flap. The planes of the phenyl ring and the benzene ring of the thiochromane unit are inclined to one another by 65.52 (14)°. In the crystal, molecules are linked by a pair of C—H⋯O hydrogen bonds forming inversion dimers.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - M Suresh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of 14-methyl-11-(3-methylphenyl)-12-oxa-8,14-diazatetracyclo[8.3.3.0 1,10.0 2,7]hexadeca-2(7),3,5-triene-9,13-dione. Acta Crystallogr E Crystallogr Commun 2015; 71:o379-80. [PMID: 26090176 PMCID: PMC4459358 DOI: 10.1107/s2056989015008129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/23/2015] [Indexed: 11/11/2022]
Abstract
In the title compound, C21H20N2O3, the lactone ring adopts an envelope conformation with the quaternary C atom bonded to two other C atoms as the flap. The fused pyrrolidine ring adopts a twisted conformation about the Cq—N (q = quaternary) bond. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R22(8) loops. The dimers are linked into [110] chains by pairs of C—H⋯O interactions, which generate R22(14) loops.
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Savithri MP, Yuvaraj PS, Reddy BSR, Raja R, SubbiahPandi A. Crystal structure of methyl 1-methyl-2-oxo-spiro-[indoline-3,2'-oxirane]-3'-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2015; 71:o274-5. [PMID: 25995901 PMCID: PMC4420098 DOI: 10.1107/s2056989015006398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 03/29/2015] [Indexed: 11/10/2022]
Abstract
In the title compound, C12H11NO4, the dihedral angle between the indole ring system (r.m.s. deviation = 0.019 Å) and the oxirane ring is 88.8 (2)°. The oxirane O atom and the bridging ester O atom are in an approximate syn conformation [O-C-C-O = -25.4 (3)°] In the crystal, inversion dimers linked by pair of C-H⋯O hydrogen bonds generate R 2 (2)(8) loops, where the C-H donor group forms part of the oxirane ring. A second C-H⋯O inter-action arising from one of the C-H groups of the benzene ring links the dimers into [001] double chains.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - P S Yuvaraj
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - B S R Reddy
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of 11-(2,3-dimethoxyphenyl)-14-methyl-12-oxa-8,14-diazatetracyclo[8.3.3.0 1,10.0 2,7]hexadeca-2(7),3,5-triene-9,13-dione. Acta Crystallogr E Crystallogr Commun 2015; 71:o293-4. [PMID: 25995911 PMCID: PMC4420094 DOI: 10.1107/s2056989015006386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 03/29/2015] [Indexed: 11/24/2022]
Abstract
The title compound, C22H22N2O5, contains two conformationally similar molecules (A and B) in its the asymmetric unit (r.m.s. overlay fit for the 29 non-H atoms = 0.194 Å). In each molecule, the lactone ring has an envelope conformation with the spiro C atom as the flap. In the crystal, A+A and B+B inversion dimers linked by pairs of N—H⋯O hydrgen bonds occur; in both cases, R22(8) loops are generated. A weak C—H⋯O interaction is also observed, which links the dimers into [010] chains.
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of ethyl 2'',3-dioxo-7',7a'-di-hydro-1'H,3H,3'H-di-spiro[benzo[b]thio-phene-2,6'-pyrrolo-[1,2-c]thia-zole-5',3''-indoline]-7'-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2015; 71:o148-o149. [PMID: 25844220 PMCID: PMC4350756 DOI: 10.1107/s2056989015002030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 01/30/2015] [Indexed: 06/04/2023]
Abstract
In the title compound, C23H20N2O4S2, the central pyrrolidine ring adopts an envelope conformation with the spiro C atom, shared with the benzo-thio-phene ring system, as the flap. The thia-zole 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 benzo-thio-phene 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, mol-ecules are linked via pairs of N-H⋯O hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. The dimers are linked via C-H⋯O and C-H⋯N hydrogen bonds, forming a three-dimensional structure. The eth-oxy-carbonyl group is disordered over two orientations, with an occupancy ratio of 0.717 (12):0.283 (12).
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Affiliation(s)
- M. P. Savithri
- Department of Physics, Queen Mary’s College (Autonomous), Chennai 600 004, India
| | - M. Suresh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R. Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R. Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A. SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of ethyl 1',1''-dimethyl-2'',3-dioxo-3H-di-spiro-[benzo[b]thio-phene-2,3'-pyrrolidine-2',3''-indoline]-4'-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2015; 71:o142. [PMID: 25844216 PMCID: PMC4350758 DOI: 10.1107/s2056989015002042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 01/30/2015] [Indexed: 11/10/2022]
Abstract
In the title compound, C23H22N2O4S, the pyrrolidine ring has an envelope conformation with the spiro C atom, shared with the indoline ring system, as the flap. The mean planes of the benzo-thio-phene and indoline ring systems are inclined to the mean plane of the pyrrolidine ring by 88.81 (8) and 79.48 (8)°, respectively, and to each other by 68.12 (5)°. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming chains propagating along [001].
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Affiliation(s)
- M. P. Savithri
- Department of Physics, Queen Mary’s College (Autonomous), Chennai 600 004, India
| | - M. Suresh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R. Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R. Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A. SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Savithri MP, Yuvaraj PS, Reddy BSR, Raja R, SubbiahPandi A. Crystal structure of methyl (E)-2-(1-methyl-2-oxoindolin-3-yl-idene)acetate. Acta Crystallogr E Crystallogr Commun 2015; 71:o188-9. [PMID: 25844241 PMCID: PMC4350746 DOI: 10.1107/s2056989015003217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 02/15/2015] [Indexed: 12/05/2022]
Abstract
The title compound, C12H11NO3, is essentially planar, with the mean plane of the acetate side chain [–C—C(=O)—O—C] being inclined to the mean plane of the indole ring system by 12.49 (7)°. The five- and six-membered rings of the indole group are almost coplanar, making a dihedral angle of 1.76 (8)°. The conformation about the C=C bond is E and there is an intramolecular C—H⋯O hydrogen bond present. In the crystal, molecules are linked by pairs of C—H⋯O hydrogen bonds forming inversion dimers, with an R22(16) ring motif. The dimers are linked by a second pair of C—H⋯O hydrogen bonds, enclosing R22(16) ring motifs, forming ribbons lying parallel to (-114). The ribbons are linked via C—H⋯π interactions, forming a three-dimensional structure.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - P S Yuvaraj
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - B S R Reddy
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Savithri MP, Suresh M, Raghunathan R, Raja R, SubbiahPandi A. Crystal structure of 15-(naphthalen-1-yl)-7,7a,8,9,10,11-hexahydro-6a,12a-(methanoepoxymethano)indolizino[2,3- c]quinoline-6,13(5 H)-dione. Acta Crystallogr E Crystallogr Commun 2015; 71:o150-1. [PMID: 25844221 PMCID: PMC4350735 DOI: 10.1107/s2056989015002017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 01/30/2015] [Indexed: 11/10/2022]
Abstract
In the title compound, C27H24N2O3, the dihedral angle between the mean planes of the dihydrofuran and 3,4-dihydroquinoline ring systems is 70.65 (9)°. The dihydrofuran ring adopts an envelope conformation with the C atom adjacent to the methylene C atom of the pyrrolidine ring as the flap. The five-membered pyrrolidine ring adopts a twist conformation on the N—C(tetrasubstituted) bond. In the crystal, molecules are linkedviapairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(8) ring motif. The dimers are linkedviapairs of C—H...O hydrogen bonds, forming ribbons enclosingR22(12) ring motifs lying in a plane parallel to (01-1).
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Savithri MP, Suresh M, Raghunathan R, Vimala G, Raja R, SubbiahPandi A. Crystal structures of ethyl (2S*,2'R*)-1'-methyl-2'',3-dioxo-2,3-di-hydro-dispiro-[1-benzo-thio-phene-2,3'-pyrrolidine-2',3''-indoline]-4'-carboxyl-ate and ethyl (2S*,2'R*)-5''-chloro-1'-methyl-2'',3-dioxo-2,3-di-hydro-dispiro-[1-benzo-thio-phene-2,3'-pyrrolidine-2',3''-indoline]-4'-carboxyl-ate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:94-7. [PMID: 25249864 PMCID: PMC4158536 DOI: 10.1107/s1600536814015426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 07/01/2014] [Indexed: 11/18/2022]
Abstract
The title compounds, (I) and (II), are dispiro-indole-pyrrolidine-benzothiophene derivatives, with (II) having a chlorine substituent on the oxoindole unit. As a result, the conformation of the two molecules differs in the angle of inclination of the indole moiety with respect to the benzothiophene ring system, with a dihedral angle of 71.59 (5) in (I) and 82.27 (7)° in (II). In the title compounds, C22H20N2O4S, (I), and C22H19ClN2O4S, (II), the pyrrolidine rings have twist conformations on the spiro–spiro C—C bonds. In (I), the five-membered ring of the oxindole moiety has an envelope conformation with the spiro C atom as the flap, while in (II) this ring is flat (r.m.s. deviation = 0.042 Å). The mean planes of the pyrrolidine rings are inclined to the mean planes of the indole units [r.m.s deviations = 0.073 and 0.069 Å for (I) and (II), respectively] and the benzothiophene ring systems (r.m.s. deviations = 0.019 and 0.034 Å for (I) and (II), respectively) by 79.57 (8) and 88.61 (7)° for (I), and by 81.99 (10) and 88.79 (10)° for (II). In both compounds, the ethoxycarbonyl group occupies an equatorial position with an extended conformation. The overall conformation of the two molecules differs in the angle of inclination of the indole unit with respect to the benzothiophene ring system, with a dihedral angle between the planes of 71.59 (5) in (I) and 82.27 (7)° in (II). In the crystal of (I), molecules are linked via pairs of N—H⋯O hydrogen bonds, forming inversion dimers enclosing R22(14) loops. The dimers are linked via C—H⋯O and bifurcated C—H⋯O(O) hydrogen bonds, forming sheets lying parallel to (100). In the crystal of (II), molecules are again linked via pairs of N—H⋯O hydrogen bonds, forming inversion dimers but enclosing smaller R22(8) loops. Here, the dimers are linked by C—H⋯O hydrogen bonds, forming ribbons propagating along [010].
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - M Suresh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - R Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - G Vimala
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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