title: N,N'-Bis(2-quinolylcarbon-yl)hydrazine.
abstract: The title compound, C(20)H(14)N(4)O(2), crystallizes in the ortho-rhom-bic system with a crystallographic twofold axis through the N-N bond. The mol-ecule is non-planar and the dihedral angle between two amide groups is 74.9 (2)°. An intra-molecular N-H⋯N hydrogen bond is present. In the crystal, the mol-ecules are packed in chains running along the c axis through inter-molecular N-H⋯O hydrogen bonds. These chains are further stabilized by inter-molecular C-H⋯O hydrogen bonds and C-H⋯π inter-actions leading to the formation of a three-dimensional network.
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, People's Republic of China.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Cheng
authors.forename: Lang
authors.initials: L
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.forename: Xuan
authors.initials: X
authors.lastname: Shen
authors.forename: Dun-Ru
authors.initials: DR
authors.lastname: Zhu