A Hydrogen Bond Stabilized 3D Network Built from Pyrazine-2,3,5,6-tetracarboxylic Acid and 8-Hydroxyquinoline

作者：Xu Feng; Wei Zhen-Hong^*; Huang Xiang-Lei; Mei Ying-Xuan; Cai Hu

来源：Chinese Journal of Structural Chemistry, 2015, 34(12): 1845-1850.

DOI：10.14102/j.cnki.0254-5861.2011-0775

• pyrazine-2,3,5,6-tetracarboxylic acid
• 8-hydroxyquinoline
• hydrogen bond

8-Hydroxyquinoline salt of pyrazine-2,3,5,6-tetracarboxylic acid [HQ]2[H2pztc]2H20 (1) was prepared and characterized by single -crystal X-ray diffraction, NMR, IR, TGA, elemental analysis and fluorescent measurements. Compound 1 crystallizes in orthorhombic, space group Pbcn with a = 9.953(3), b = 15.966(3), c = 16.081(5) angstrom, V= 2555.5(13) A3, Z= 4,,u = 0.122 mm(-1), Dc= 1.514 Mg/m(3), T = 296(2) K, C26H22N4O12, M,. = 582.48, F(000) = 1208, S = 1.006, R = 0.0448 and wR = 0.1149. Compound 1 has a three-dimensional (3D) network, in which pyrazine-2,3,5,6-tetracarboxylic acids build up two-dimensional (2D) sheets and 8-hydroxyquinoline cations and water molecules act as pillars to connect the 2D sheets into an extended 3D network through strong intermolecular hydrogen bonding and pi-pi stacking interactions. Especially, a very short O-H center dot center dot center dot O hydrogen bond (O center dot center dot center dot O 2.470(2) angstrom) between two neighboring [H2pztc] anions was observed.

• 出版日期2015-12
• 单位南昌大学