title: (E)-2-Acetyl-pyrazine 4-nitro-phenyl-hydrazone.
abstract: In the title compound, C(12)H(11)N(5)O(2), the mol-ecule adopts an E configuration, with the benzene and pyrazine rings located on opposite sides of the N=C double bond. The face-to-face separations of 3.413 (14) and 3.430 (8) Å, respectively between parallel benzene rings and between pyrazine rings indicate the existence of π-π stacking between adjacent mol-ecules. The crystal structure also contains N-H⋯N and C-H⋯O hydrogen bonding.
authors.affiliation: College of Chemical Engineering and Materials Science, Zhejiang University of Technology, People's Republic of China.
authors.forename: Shang
authors.initials: S
authors.lastname: Shan
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Tian
authors.forename: Shan-Heng
authors.initials: SH
authors.lastname: Wang
authors.forename: Wen-Long
authors.initials: WL
authors.lastname: Wang
authors.forename: Ying-Li
authors.initials: YL
authors.lastname: Xu