Ethyl 2-[(4-chloro-phen-yl)hydrazono]-3-oxobutanoate

Abstract

The mol-ecule of the title oxobutanoate derivative, C<inf>12</inf>H <inf>13</inf>ClN<inf>2</inf>O<inf>3</inf>, is nearly planar; the inter-planar angle between the benzene ring and the mean plane through the hydrazono-3-oxobutanoate unit is 2.69 (3)°. An intra-molecular N - H?O hydrogen bond generates an S(6) ring motif. In the crystal packing, C - H?O(3-oxo) inter-actions link mol-ecules into dimers. The dimers thus formed are linked through C - H?O(carboxyl-ate C=O) inter-actions, leading to the formation of ribbons along the [01 ] direction, which are stabilized via Cl?Cl [3.2916 (3) Å] contacts. The ribbons are stacked via C?O contacts [3.2367 (12)-3.3948 (12) Å].