6,8-Dibromo-3-nitro-2-phenyl-2H-chromene
نویسندگان
چکیده
In the title compound, C15H9Br2NO3, the chromene unit is not quite planar (r.m.s. deviation from planarity = 0.0888 Å). The di-hydro-pyran ring adopts an envelope conformation with the phenyl-substituted C atom fused to the di-hydro-pyran 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 di-hydro-pyran 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.
منابع مشابه
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