title: 2-[({[Bis(pyridin-2-yl)methylidene]hydrazinecarbonyl}hydrazinylidene)(pyridin-2-yl)methyl]pyridinium tetra-fluoro-borate.
abstract: In the title compound, C(23)H(19)N(8)O(+)·BF(4) (-), one pyridine N atom is protonated. Two intra-molecular N-H⋯N hydrogen bonds occur. In the crystal, inter-molecular N-H⋯N hydrogen bond links neighboring C(23)H(19)N(8)O(+) units into cyclic supra-molecular dimers while C-H⋯O hydrogen bonds link the C(23)H(19)N(8)O(+) units into a two-dimensional supra-molecular network structure.
authors.affiliation: School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province,  People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Angew Chem Int Ed Engl. 2009;48(8):1475-8
references.pmid: 19040239