抄録
The title compound, 3-[1-(4-bromophenylamino)ethylidene]-6-methylpyran-2,4-dione, C14H12BrNO3, crystallizes in orthorhombic space group Pbcn, with cell parameters a = 26.7145(7), b = 10.1617(3), c = 9.7098(2)Å, V = 2635.87(12)Å3, Dx = 1.6236 Mg/m3. The structure was refined to a final R = 0.0428 using 4345 unique reflections. The molecule adopts the keto-amine tautomeric form; with the hydroxyl H atom located on the N atom and the NH group and oxo O atom execute a strong intramolecular N-H…O hydrogen bond. The N-H…O hydrogen-bonded ring is planar and coupled with the pyronic ring.
