Zhong Kai-Long
Department of Applied Chemistry, Nanjing College of Chemical Technology, Nanjing 210048, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2013 Mar 16;69(Pt 4):m207-8. doi: 10.1107/S1600536813006685. Print 2013 Apr 1.
In the title compound, [Co2(SO4)2(C10H8N2)2(C2H6O2)2(H2O)2] n , there are two crystallographically independent Co(II) ions, each of which lies on a twofold rotation axis and has a slightly distorted octa-hedral environment. One Co(II) ion is coordinated by two N atoms from two bridging 4,4'-bipyridine (4,4'-bipy) ligands, two O atoms from two sulfate ions and two O atoms from aqua ligands. The second Co(II) ion is similar but with ethane-1,2-diol ligands in place of water mol-ecules. The sulfate anions act as bridging ligands to link two adjacent Co(II) ions together, leading to the formation of linear ⋯Co1Co2Co1Co2⋯chains along the a axis. Adjacent chains are further bridged by 4,4'-bipy ligands, which are also located on the twofold rotation axis, resulting in a two-dimensional layered polymer extending parallel to (001). In the crystal, the layers are linked by extensive O-H⋯O hydrogen-bonding inter-actions involving the O atoms of the water mol-ecules and ethane-1,2-diol mol-ecules, resulting in a three-dimensional supra-molecular network.
在标题化合物[Co₂(SO₄)₂(C₁₀H₈N₂)₂(C₂H₆O₂)₂(H₂O)₂]ₙ中，存在两个晶体学独立的Co(II)离子，每个离子位于一个二次旋转轴上，且具有略微扭曲的八面体环境。一个Co(II)离子由来自两个桥连4,4'-联吡啶（4,4'-bipy）配体的两个N原子、来自两个硫酸根离子的两个O原子以及来自水配体的两个O原子配位。第二个Co(II)离子情况类似，但用1,2-乙二醇配体取代了水分子。硫酸根阴离子作为桥连配体将两个相邻的Co(II)离子连接在一起，导致沿a轴形成线性⋯Co1Co2Co1Co2⋯链。相邻的链进一步由也位于二次旋转轴上的4,4'-bipy配体桥连，形成平行于(001)延伸的二维层状聚合物。在晶体中，这些层通过涉及水分子和1,2-乙二醇分子的O原子的广泛O-H⋯O氢键相互作用相连，形成三维超分子网络。
