title: [Oxalylbis(aza-nedi-yl)]bis-{[amino-(2-pyrid-yl)methyl-ene]ammonium}.
abstract: The title compound, C(14)H(16)N(8)O(2) (2+)·2ClO(4) (-), was prepared by reaction of bis-[amino-(2-pyrid-yl)methyl-ene]oxalohydrazide with perchloric acid. The mol-ecular symmetry is C(i) and thus the asymmetric unit comprises one half-mol-ecule. The dihedral angle between the aromatic ring and the plane of the oxamide group is 70.8 (3)°. The perchlorate anions and the cations are connected by inter-molecular N-H⋯O hydrogen bonds.
authors.forename: Wen-Tao
authors.initials: WT
authors.lastname: Bi
authors.forename: Nai-Liang
authors.initials: NL
authors.lastname: Hu
authors.forename: Jian-Hong
authors.initials: JH
authors.lastname: Bi