Zhang Hong-Tao, Chen Ya-Qing, Xu Li, You Xiao-Zeng
Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China.
Acta Crystallogr C. 2003 Sep;59(Pt 9):m373-5. doi: 10.1107/s0108270103014422. Epub 2003 Aug 16.
The asymmetric unit of the title one-dimensional coordination polymer, Ni(C(7)H(3)NO(4))(C(5)H(5)N)(H(2)O)(2), contains a quinolinate dianion, a nickel(II) ion, two water molecules and a pyridine molecule. The pyridine-2,3-dicarboxylate (quinolinate) ligands connect the nickel(II) ions in a head-to-tail fashion, resulting in the formation of a one-dimensional zigzag chain. Adjacent chains form pairs via an extensive network of hydrogen-bonding interactions. A weak C--H...O intermolecular hydrogen bond links neighboring pairs of chains, thus generating two-dimensional double-sheet layers that are stabilized via pi-pi-stacking interactions between adjacent quinolinate pyridyl rings.
标题一维配位聚合物[Ni(C₇H₃NO₄)(C₅H₅N)(H₂O)₂]ₙ的不对称单元包含一个喹啉酸二价阴离子、一个镍(II)离子、两个水分子和一个吡啶分子。吡啶-2,3-二羧酸（喹啉酸）配体以头对尾的方式连接镍(II)离子，形成一维锯齿链。相邻链通过广泛的氢键相互作用形成对。一个弱的C-H...O分子间氢键连接相邻的链对，从而产生二维双层，通过相邻喹啉酸吡啶环之间的π-π堆积相互作用使其稳定。
