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6,8-Dibromo-3-nitro-2-phenyl-2H-chromene
In the title compound, C(15)H(9)Br(2)NO(3), the chromene unit is not quite planar (r.m.s. deviation from planarity = 0.0888 Å). The dihydropyran ring adopts an envelope conformation with the phenyl-substituted C atom fused to the dihydropyran ring as the flap. The dihedral angle between the plan...
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
International Union of Crystallography
2013
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3685035/ https://www.ncbi.nlm.nih.gov/pubmed/23795054 http://dx.doi.org/10.1107/S160053681301221X |
| Sumario: | In the title compound, C(15)H(9)Br(2)NO(3), the chromene unit is not quite planar (r.m.s. deviation from planarity = 0.0888 Å). The dihydropyran ring adopts an envelope conformation with the phenyl-substituted C atom fused to the dihydropyran ring as the flap. The dihedral angle between the plane defined by this C atom and the adjacent C and O atoms and the mean plane of the dihydropyran ring excluding the phenyl-substituted C atom is 25.1 (3)°. The dihedral angle between the mean plane of the chromene unit and the phenyl ring is 85.7 (1)°. The crystal structure features C—H⋯O hydrogen bonds and Br⋯O contacts [3.289 (3) Å] involving the nitro O atoms. |
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