[1-(3-Nitrophenyl)-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazin-3-ylidine]malonaldehyde

The oxazine ring in the title compound, C21H14N2O5, adopts a flattened boat conformation. The nitrophenyl ring and the naphthalene ring system enclose a dihedral angle of 89.2 (1)°. An intramolecular hydrogen bond is formed between the NH group and one of the adjacent carbonyl O atoms. In addition, the NH group forms an intermolecular hydrogen bond to a symmetry equivalent of this carbonyl O atom, connecting the molecules into centrosymmetric dimers. The structure also contains C—H...O intermolecular interactions.

Abstract licence: CC BY

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