Zhu Xiao-Hong, Cheng Xiao-Chun
Faculty of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2011 Nov;67(Pt 11):m1641. doi: 10.1107/S1600536811044485. Epub 2011 Oct 29.
In the asymmetric unit of title coordination polymer, {(C(16)H(36)N)[Zn(3)(C(9)H(3)O(6))(2)(OH)]·0.25H(2)O}(n), there are three independent Zn(2+) cations, two benzene-1,3,5-tricarboxyl-ate ligands and a μ(3)-bridging hydroxide group, together with a tetra-n-butyl-ammonium counter-cation and a partially occupied water molecule of solvation (occupancy 0.25). Each Zn ion is coordinated by three carboxyl-ate O atoms and one O atom from the bridging hydroxide ion, displaying a slightly distorted tetra-hedral stereochemistry [overall Zn-O range = 1.875 (3)-1.987 (2) Å]. An intra-molecular hydrogen bond involving the hydroxide H atom and a carboxyl-ate O-atom acceptor is also present in the complex unit. The bridging benzene-1,3,5-tricarboxyl-ate anions generate a three-dimensional framework structure.
在标题配位聚合物{(C₁₆H₃₆N)[Zn₃(C₉H₃O₆)₂(OH)]·0.25H₂O}ₙ的不对称单元中，有三个独立的Zn²⁺阳离子、两个苯-1,3,5-三羧酸酯配体和一个μ₃-桥连羟基，以及一个四正丁基铵抗衡阳离子和一个部分占据的溶剂化水分子（占有率0.25）。每个Zn离子由三个羧酸酯O原子和一个来自桥连氢氧根离子的O原子配位，呈现出轻微扭曲的四面体立体化学[总的Zn-O范围 = 1.875 (3)-1.987 (2) Å]。在配合物单元中还存在一个涉及羟基H原子和一个羧酸酯O原子受体的分子内氢键。桥连的苯-1,3,5-三羧酸根阴离子形成了三维骨架结构。
