3-Penta­none 2,4-dinitro­phenyl­hydrazone

Crystals of the title compound, C(11)H(14)N(4)O(4), were obtained from a condensation reaction of 2,4-dinitro-phenyl-hydrazine and 3-penta-none. In the crystal structure, the mol-ecule, except one methyl group, displays a nearly planar structure. The imino group links to the adjacent nitro group via intra-molecular hydrogen bonding. The partially overlapped arrangement and face-to-face separation of 3.410 (9) Å between parallel benzene rings indicate the existence of π-π stacking between adjacent mol-ecules. The crystal structure also contains weak inter-molecular C-H⋯O hydrogen bonding.