Assembly of Cu/Ag-quinoxaline-polyoxotungstate hybrids: Influence of Keggin and Wells-Dawson polyanions on the structure

作者：Chi, Ying-Nan; Cui, Feng-Yun; Lin, Zheng-Guo; Xu, Yan; Ma, Xiao-Yu; Shen, Pan-Pan; Huang, Kun-Lin; Hu, Chang-Wen^*

来源：Journal of Solid State Chemistry, 2013, 199: 230-239.

DOI：10.1016/j.jssc.2012.12.032

• Keggin polyoxometalates
• Wells-Dawson polyoxometalates
• Hybrid compound
• Electrochemistry

In order to investigate the influence of Keggin and Wells-Dawson polyoxometalates on the resultant structure, four new organic-inorganic hybrid compounds [Cu-4(qx)(5)(SiW12O40)] (1), [Cu-6(qx)(6) (P2W18O62)(H2O)(1.5)] center dot 4.5H(2)O (2), [Ag-4(qx)(4)(SiW12O40)(H2O)] center dot H2O (3), [Ag-6(qx)(6)(P2W18O62)] center dot 8H(2)O (4) (qx=quinoxaline) were synthesized and structurally characterized by single-crystal X-ray diffraction. In 1, the 2D layers are linked by the SiW12O404- (SiW12) anions to construct a 3D framework. When the Wells-Dawson type P2W18O626- (P2W18) is used, 2 is prepared, in which the 1D helical chains are connected by P2W18 to form a 3D network. In 3, two kinds of 1D metal-organic chains are connected by SiW12 clusters to construct a 3D framework. In 4, there are also two kinds of 1D chains one kind of 1D chain combines with P2W18 by the Ag-O weak interaction and the other kind is just metal-organic chain. In addition, the electrochemistry properties of compounds 1-4 have been studied.

• 出版日期2013-3
• 单位中华人民共和国北京出入境检验检疫局; 重庆师范大学; 南京工业大学; 北京理工大学