7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione
In the title molecule, C24H22O8, the mean planes of the two coumarin units are inclined to each other at a dihedral angle of 79.93 (3)°. The attached methoxy groups form torsion angles of 7.65 (19) and 78.36 (14)° with respect to on...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
International Union of Crystallography
2009-06-01
|
| Series: | Acta Crystallographica Section E |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536809018029 |
| _version_ | 1831684454154764288 |
|---|---|
| author | Hoong-Kun Fun Samuel Robinson Jebas Mehtab Parveen Zakia Khanam Raza Murad Ghalib |
| author_facet | Hoong-Kun Fun Samuel Robinson Jebas Mehtab Parveen Zakia Khanam Raza Murad Ghalib |
| author_sort | Hoong-Kun Fun |
| collection | DOAJ |
| description | In the title molecule, C24H22O8, the mean planes of the two coumarin units are inclined to each other at a dihedral angle of 79.93 (3)°. The attached methoxy groups form torsion angles of 7.65 (19) and 78.36 (14)° with respect to one coumarin unit, and angles of 9.01 (16) and 99.08 (11)° with respect to the other coumarin unit. In the crystal structure, weak intermolecular C—H...O hydrogen bonds connect pairs of molecules to form dimers, generating R22(16) and R22(18) rings; the dimers are linked by further weak intermolecular C—H...O hydrogen bonds, forming extended chains. Additional stabilization is provided by weak C—H...π interactions. |
| first_indexed | 2024-12-20T08:01:09Z |
| format | Article |
| id | doaj.art-48bca88c98844513a4e054db21a064d2 |
| institution | Directory Open Access Journal |
| issn | 1600-5368 |
| language | English |
| last_indexed | 2024-12-20T08:01:09Z |
| publishDate | 2009-06-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | Acta Crystallographica Section E |
| spelling | doaj.art-48bca88c98844513a4e054db21a064d22022-12-21T19:47:31ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682009-06-01656o1322o132310.1107/S16005368090180297,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dioneHoong-Kun FunSamuel Robinson JebasMehtab ParveenZakia KhanamRaza Murad GhalibIn the title molecule, C24H22O8, the mean planes of the two coumarin units are inclined to each other at a dihedral angle of 79.93 (3)°. The attached methoxy groups form torsion angles of 7.65 (19) and 78.36 (14)° with respect to one coumarin unit, and angles of 9.01 (16) and 99.08 (11)° with respect to the other coumarin unit. In the crystal structure, weak intermolecular C—H...O hydrogen bonds connect pairs of molecules to form dimers, generating R22(16) and R22(18) rings; the dimers are linked by further weak intermolecular C—H...O hydrogen bonds, forming extended chains. Additional stabilization is provided by weak C—H...π interactions.http://scripts.iucr.org/cgi-bin/paper?S1600536809018029 |
| spellingShingle | Hoong-Kun Fun Samuel Robinson Jebas Mehtab Parveen Zakia Khanam Raza Murad Ghalib 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione Acta Crystallographica Section E |
| title | 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione |
| title_full | 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione |
| title_fullStr | 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione |
| title_full_unstemmed | 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione |
| title_short | 7,7′,8,8′-Tetramethoxy-4,4′-dimethyl-3,5′-bichromene-2,2′-dione |
| title_sort | 7 7 amp 8242 8 8 amp 8242 tetramethoxy 4 4 amp 8242 dimethyl 3 5 amp 8242 bichromene 2 2 amp 8242 dione |
| url | http://scripts.iucr.org/cgi-bin/paper?S1600536809018029 |
| work_keys_str_mv | AT hoongkunfun 77amp824288amp8242tetramethoxy44amp8242dimethyl35amp8242bichromene22amp8242dione AT samuelrobinsonjebas 77amp824288amp8242tetramethoxy44amp8242dimethyl35amp8242bichromene22amp8242dione AT mehtabparveen 77amp824288amp8242tetramethoxy44amp8242dimethyl35amp8242bichromene22amp8242dione AT zakiakhanam 77amp824288amp8242tetramethoxy44amp8242dimethyl35amp8242bichromene22amp8242dione AT razamuradghalib 77amp824288amp8242tetramethoxy44amp8242dimethyl35amp8242bichromene22amp8242dione |