title: 3-Penta-none 2,4-dinitro-phenyl-hydrazone.
abstract: 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.
authors.forename: Lu-Feng
authors.initials: LF
authors.lastname: Xu
authors.forename: Shang
authors.initials: S
authors.lastname: Shan
authors.forename: Wen-Long
authors.initials: WL
authors.lastname: Wang
authors.forename: Shan-Heng
authors.initials: SH
authors.lastname: Wang