Zhong Kai-Long, Chen Li, Chen Lin
Department of Applied Chemistry, Nanjing College of Chemical Technology, People's Republic of China.
Acta Crystallogr C. 2011 Feb;67(Pt 2):m62-4. doi: 10.1107/S0108270110052558. Epub 2011 Jan 27.
The title compound, Cu(2)(SO(4))(2)(C(10)H(8)N(2))(2)(C(2)H(6)O(2))(2)(H(2)O)(2), contains two crystallographically unique Cu(II) centres, each lying on a twofold axis and having a slightly distorted octahedral environment. One Cu(II) centre is coordinated by two bridging 4,4'-bipyridine (4,4'-bipy) ligands, two sulfate anions and two aqua ligands. The second is surrounded by two 4,4'-bipy N atoms and four O atoms, two from bridging sulfate anions and two from ethane-1,2-diol ligands. The sulfate anion bridges adjacent Cu(II) centres, leading to the formation of linear ···Cu1-Cu2-Cu1-Cu2··· chains. Adjacent chains are further bridged by 4,4'-bipy ligands, which are also located on the twofold axis, resulting in a two-dimensional layered polymer. In the crystal structure, extensive O-H···O hydrogen-bonding interactions between water molecules, ethane-1,2-diol molecules and sulfate anions lead to the formation of a three-dimensional supramolecular network structure.
标题化合物[Cu₂(SO₄)₂(C₁₀H₈N₂)₂(C₂H₆O₂)₂(H₂O)₂]ₙ包含两个晶体学上独特的Cu(II)中心，每个中心位于一个二次轴上，具有略微扭曲的八面体环境。一个Cu(II)中心由两个桥联的4,4'-联吡啶（4,4'-bipy）配体、两个硫酸根阴离子和两个水配体配位。第二个中心被两个4,4'-bipy的N原子和四个O原子包围，其中两个O原子来自桥联硫酸根阴离子，另外两个来自1,2-二醇配体。硫酸根阴离子桥联相邻的Cu(II)中心，导致形成线性···Cu1-Cu2-Cu1-Cu2···链。相邻的链进一步由也位于二次轴上的4,4'-bipy配体桥联，形成二维层状聚合物。在晶体结构中，水分子、1,2-二醇分子和硫酸根阴离子之间广泛的O-H···O氢键相互作用导致形成三维超分子网络结构。
