N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide
The title compound, C16H12N2O4S, was obtained by the condensation of 3-acetyl-4-hydroxycoumarin with thien-2-ylcarbonyl hydrazide. The pyran ring adopts a 2,4-dione tautomeric form. The benzopyran ring system is almost coplanar with the thiophene ring [dihedral angle 0.9 (2)&#1...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Union of Crystallography
2011-04-01
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| Series: | Acta Crystallographica Section E |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536811010907 |
| _version_ | 1818286007061053440 |
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| author | Madeleine Helliwell Despina A. Nasiopoulou Philip A. Harris Antigoni Kotali John A. Joule |
| author_facet | Madeleine Helliwell Despina A. Nasiopoulou Philip A. Harris Antigoni Kotali John A. Joule |
| author_sort | Madeleine Helliwell |
| collection | DOAJ |
| description | The title compound, C16H12N2O4S, was obtained by the condensation of 3-acetyl-4-hydroxycoumarin with thien-2-ylcarbonyl hydrazide. The pyran ring adopts a 2,4-dione tautomeric form. The benzopyran ring system is almost coplanar with the thiophene ring [dihedral angle 0.9 (2)°]. The exocyclic C=C double bond has an E geometry. The molecular conformation is stabilized by an intramolecular N—H...O hydrogen bond. In the crystal, intermolecular N—H...O hydrogen bonds link the molecules into chains along the a axis. |
| first_indexed | 2024-12-13T01:17:44Z |
| format | Article |
| id | doaj.art-964d420b409c4951832d587dd7aa8900 |
| institution | Directory Open Access Journal |
| issn | 1600-5368 |
| language | English |
| last_indexed | 2024-12-13T01:17:44Z |
| publishDate | 2011-04-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | Acta Crystallographica Section E |
| spelling | doaj.art-964d420b409c4951832d587dd7aa89002022-12-22T00:04:18ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682011-04-01674o1014o101410.1107/S1600536811010907N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazideMadeleine HelliwellDespina A. NasiopoulouPhilip A. HarrisAntigoni KotaliJohn A. JouleThe title compound, C16H12N2O4S, was obtained by the condensation of 3-acetyl-4-hydroxycoumarin with thien-2-ylcarbonyl hydrazide. The pyran ring adopts a 2,4-dione tautomeric form. The benzopyran ring system is almost coplanar with the thiophene ring [dihedral angle 0.9 (2)°]. The exocyclic C=C double bond has an E geometry. The molecular conformation is stabilized by an intramolecular N—H...O hydrogen bond. In the crystal, intermolecular N—H...O hydrogen bonds link the molecules into chains along the a axis.http://scripts.iucr.org/cgi-bin/paper?S1600536811010907 |
| spellingShingle | Madeleine Helliwell Despina A. Nasiopoulou Philip A. Harris Antigoni Kotali John A. Joule N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide Acta Crystallographica Section E |
| title | N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide |
| title_full | N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide |
| title_fullStr | N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide |
| title_full_unstemmed | N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide |
| title_short | N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl]thiophene-2-carbohydrazide |
| title_sort | n amp 8242 1 2 4 dioxo 3 4 dihydro 2h 1 benzopyran 3 ylidene ethyl thiophene 2 carbohydrazide |
| url | http://scripts.iucr.org/cgi-bin/paper?S1600536811010907 |
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