Kumagai Hitoshi, Kawata Satoshi
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):o2636. doi: 10.1107/S1600536811035926. Epub 2011 Sep 14.
The title compound, C(10)H(10)N(2) (2+)·C(8)Br(4)O(4) (2-)·2H(2)O, consists of a tetra-bromo-terephthalate dianion, a 4,4'-bipyridinium dication and two solvent water mol-ecules. Crystallographic inversion centers are situated at the center of the aromatic ring of the dianion as well as at the midpoint of the carbon-carbon bond connecting the pyridine rings in the dication. In the crystal, inter-molecular N-H⋯O hydrogen-bonding inter-actions between tetra-bromo-terephthalate dianions and protonated 4,4'-bipyridinium dications result in the formation of a chain-like structure. Further O-H⋯O hydrogen bonds between carboxyl-ate O atoms and water mol-ecules lead to the formation of a two-dimensional network in the crystal structure.
标题化合物C(10)H(10)N(2)(2+)·C(8)Br(4)O(4)(2-)·2H(2)O由一个四溴对苯二甲酸二阴离子、一个4,4'-联吡啶二价阳离子和两个溶剂水分子组成。晶体学反演中心位于二阴离子芳环的中心以及二价阳离子中连接吡啶环的碳-碳键的中点。在晶体中，四溴对苯二甲酸二阴离子与质子化的4,4'-联吡啶二价阳离子之间的分子间N-H⋯O氢键相互作用导致形成链状结构。羧酸根O原子与水分子之间进一步的O-H⋯O氢键导致在晶体结构中形成二维网络。
