Niu Cao-Yuan, Ning Ai-Min, Feng Chao-Ling, Dang Yu-Li, Kou Chun-Hong
College of Sciences, Henan Agricultural University, Zhengzhou 450002, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2008 Nov 26;64(Pt 12):m1616-7. doi: 10.1107/S1600536808038919.
In the title polymer, {[Cu(SO(4))(C(12)H(9)N(3)O)(2)(H(2)O)(2)]·4H(2)O}(n), both the metal center and the sulfate anion are located on a twofold axis. The Cu(II) ion is coordinated by two pyridyl N atoms from two symmetry-related organic ligands, two O atoms from two symmetry-related water mol-ecules, and two O atoms from two symmetry-related sulfate anions, resulting in a distorted octa-hedral geometry. The sulfate anions act as μ(2)-bridges and connect metal ions, forming a one-dimensional chain along the b axis. The three-dimensional crystal structure is established through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds involving the organic ligands, sulfate anions, coordinated and uncoordinated water mol-ecules, and through π-π inter-acting 2-pyridone rings, with centroid-centroid separations of ca 3.96 Å and tilt angles of ca 2.62°.
在标题聚合物{[Cu(SO₄)(C₁₂H₉N₃O)₂(H₂O)₂]·4H₂O}ₙ中，金属中心和硫酸根阴离子均位于二重轴上。Cu(II)离子由来自两个对称相关有机配体的两个吡啶基N原子、来自两个对称相关水分子的两个O原子以及来自两个对称相关硫酸根阴离子的两个O原子配位，形成扭曲的八面体几何构型。硫酸根阴离子作为μ₂ - 桥连接金属离子，沿b轴形成一维链。三维晶体结构通过涉及有机配体、硫酸根阴离子、配位和未配位水分子的分子间N - H⋯O和O - H⋯O氢键以及通过质心 - 质心间距约为3.96 Å且倾斜角约为2.62°的π - π相互作用的2 - 吡啶酮环建立。
