Key Laboratory of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun 130024, People's Republic of China.
Inorg Chem. 2011 Sep 19;50(18):8967-72. doi: 10.1021/ic201135g. Epub 2011 Aug 15.
A new polyoxometalate (POM) based on a flexible bidentate ligand and "inverted Keggin" inorganic building block, namely, [Cu(8)L(8)Mo(12)O(46)(AsPh)(4)]·H(2)O (1), where L is 1,3-bis(1,2,4-triazol-1-yl)propane, has been synthesized under hydrothermal condition. In 1, the "inverted Keggin" Mo(12)O(46)(AsPh)(4) building blocks are linked by the one-dimensional (1D) zigzag Cu(I)(trans-L) chains and Cu(I)(4)(cis-L)(4) macrocycles to yield a three-dimensional (3D) framework. The compound 1 represents the first 3D "inverted Keggin" polyoxometalate modified by a transition-metal complex. Topologically, the 3D framework can be considered as an 8-connected net with a Schläfli symbol of 4(22)·6(6). As far as we know, compound 1 is the highest-connected uninodal network topology presently known for POM-based materials. The compound was characterized by its IR spectrum, UV-vis spectrum, thermogravimetric analysis (TGA), and powder X-ray diffraction (XRD) patterns. Remarkably, compound 1 exhibits photocatalytic activity for dye degradation under visible light irradiation and shows good stability toward visible-light photocatalysis.
一种新的多金属氧酸盐（POM）基于柔性双齿配体和“反 Keggin”无机构筑单元，即[Cu(8)L(8)Mo(12)O(46)(AsPh)(4)]·H(2)O（1），其中 L 是 1,3-双（1,2,4-三唑-1-基）丙烷，在水热条件下合成。在 1 中，“反 Keggin”Mo(12)O(46)(AsPh)(4)构筑单元通过一维（1D）锯齿Cu(I)(trans-L)链和Cu(I)(4)(cis-L)(4)大环连接，形成三维（3D）框架。该化合物 1 代表了第一个由过渡金属配合物修饰的三维“反 Keggin”多金属氧酸盐。从拓扑学角度来看，3D 框架可以被认为是一个具有 Schläfli 符号为 4(22)·6(6)的 8 连接网络。据我们所知，化合物 1 是目前已知的基于 POM 材料的最高连接无节点网络拓扑结构。该化合物的结构通过红外光谱、紫外-可见光谱、热重分析（TGA）和粉末 X 射线衍射（XRD）图谱进行了表征。值得注意的是，化合物 1 在可见光照射下具有染料降解的光催化活性，并表现出对可见光光催化的良好稳定性。
