Diethyl 2,2′-bis(hydroxyimino)-3,3′-(hydrazinediylidene)dibutanoate

Abstract

Each molecule of the title compound, C12H18N4O6, is located on an inversion centre at the mid-point of the central N—N bond. The azo groups C=N of the Schiff base group have an E conformation and the azo groups in the oxime C=N—O groups have a Z conformation. O–H...O hydrogen bonds link neighbouring molecules into infinite monolayers perpendicular to the a axis.