Liu Sheng-Bo, Xu Chao, Duan Taike, Chen Qun, Zhang Qian-Feng
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):o2033. doi: 10.1107/S160053681102719X. Epub 2011 Jul 13.
In the title compound, 3C(10)H(8)N(2)·4C(7)H(5)NO(4), the asymmetric unit contains two mol-ecules of pyridine-3,5-dicarb-oxy-lic acid and one mol-ecule of 4,4'-bipyridine in general positions together with one mol-ecule of 4,4'-bipyridine lying across a centre of inversion, thus giving a 4:3 molar ratio of pyridine-3,5-dicarb-oxy-lic acid to 4,4'-bipyridine. The dihedral angle between the bipyridine rings on general positions is 21.2 (2)°. These mol-ecular units are linked by O-H⋯N hydrogen bonds forming an extended two-dimensional framework in the crystal.
在标题化合物3C₁₀H₈N₂·4C₇H₅NO₄中，不对称单元包含两个处于一般位置的吡啶-3,5-二羧酸分子、一个处于一般位置的4,4'-联吡啶分子以及一个位于对称中心上的4,4'-联吡啶分子，因此吡啶-3,5-二羧酸与4,4'-联吡啶的摩尔比为4:3。处于一般位置的联吡啶环之间的二面角为21.2 (2)°。这些分子单元通过O-H⋯N氢键相连，在晶体中形成一个扩展的二维框架。
