Wang Yan, Li Yue-Qin, Shen Ying-Zhong
Applied Chemistry Department, School of Material Science & Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2008 Aug 30;64(Pt 9):m1203-4. doi: 10.1107/S1600536808026494.
In the title compound, {[Zn(2)(C(16)H(4)I(2)O(8))(H(2)O)(4)]·2H(2)O}(n), two crystallographically independent Zn(II) atoms are each located on a twofold rotation axis. Both Zn(II) atoms are in distorted octa-hedral coordination geometries: one is coordinated by six O atoms from four carboxyl-ate groups, while the other is coordinated by two carboxyl-ate groups and four water mol-ecules. The tetra-carboxyl-ate ligand mol-ecules connect the Zn(II) atoms, completing a three-dimensional metal-organic framework. O-H⋯O hydrogen bonds link the metal-organic framework with the uncoord-inated water mol-ecules.
在标题化合物{[Zn₂(C₁₆H₄I₂O₈)(H₂O)₄]·2H₂O}ₙ中,两个晶体学独立的Zn(II)原子均位于二重旋转轴上。两个Zn(II)原子均处于扭曲的八面体配位几何构型:一个由来自四个羧酸根基团的六个O原子配位,而另一个由两个羧酸根基团和四个水分子配位。四羧酸根配体分子连接Zn(II)原子,形成三维金属有机骨架。O—H⋯O氢键将金属有机骨架与未配位的水分子相连。