Hydrothermal syntheses and structures of four new polyoxometalate based supramolecular architectures
- 作者：Li-Na Xiao ; Yan Wang ; Yu Peng ; Guang-Hua Li ; Jia-Ning Xu ; La-Mei Wang ; Yang-Yang Hu ; Tie-Gang Wang ; Zhong-Min Gao ; Da-Fang Zheng ; Xiao-Bing Cui ; cuixb@mail.jlu.edu.cn ; Ji-Qing Xu ; xjq@mail.jlu.edu.cn
- 关键词：Polyoxometalate ; Hydrothermal synthesis ; Keggin ; Hydrogen bonding interactions
- 刊名：Inorganica Chimica Acta
- 出版年：2012
- 期刊代码：40_00201693
- 类别：ch
- 出版时间：30 May, 2012
- 卷：387
- 期：Complete
- 页码：204-211
- 文件大小：1212 K
摘要
Four new supramolecular architectures based on Keggin polyoxometalates (POMs): [(HSiMo12O40)(H4,4鈥?bpy)2][(H4,4鈥?bpy)(H2O)2]路2H2O (1), [(HSiW12O40)(H4,4鈥?bpy)2][(H4,4鈥?bpy)(H2O)2]路2H2O (2), [(SiW12O40)(H4,4鈥?bpy)4]路(4,4鈥?bpy)路2H2O (3) and [H4SiW12O40](2,2鈥?bpy)4 (4) (bpy = bipyridine) have been prepared hydrothermally and characterized by IR, UV-Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), powder XRD analyses, elemental analyses, fluorescence analysis and single crystal X-ray diffraction analyses. Both compounds 1 and 2 exhibit supramolecular 2D layer structures. Compound 3 exhibits a novel supramolecular double chain structure. Compound 4 contains a 1D chain structure with two 2,2鈥?bpy ligands as double bridges. It should be noted that compound 4 is the first example of hybrid compound based on 2,2鈥?bpy ligands and POMs.