N′-[1-(Pyrazin-2-yl)ethylidene]pyrazine-2-carbohydrazide

Abstract

The title compoud, C11H10N6O, was synthesized by the condensation reaction of pyrazine-2-carbohydrazide with 2-acetylpyrazine in ethanol. The dihedral angle between the pyrazine rings is 4.7 (3)°. In the crystal, aromatic π–π stacking [centroid–centroid separations = 3.606 (5) and 3.671 (5) Å] connect the molecules into stacks propagating in the [010] direction. A weak C—H...N interaction is also observed. The crystal studied was refined as a two-component twin.