Ethyl 2-[2-(3-methoxyphenyl)hydrazinylidene]-3-oxobutanoate

Abstract

The title compound, C 13H 16N 2O 4, is approximately planar (r.m.s. deviation = 0.065 Å for the 19 non-H atoms). An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif and the mol-ecule adopts an E conformation with respect to the central C=N double bond. In the crystal, pairs of intermolecular C -H⋯O hydrogen bonds link adjacent molecules into inversion dimers. The crystal structure also features weak C-H⋯π interactions.