Effect of Na(Ⅰ)-H2O clusters on self-assembly of sandwich-type U(Ⅵ)-containing silicotungstates and the efficient catalytic activity for the synthesis of substituted phenylsulfonyl-1H-pyrazoles  

作　　者：Ke Li Xiao-Ling Lin Kai Zeng Xiao-Fei Gao Wei Cen Yu-Feng Liu Guo-Ping Yang 

机构地区：[1]Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,Jiangxi Province Key Laboratory of Synthetic Chemistry,East China University of Technology,Nanchang,330013,China [2]Russia School of Social and Human Sciences-International Relations,Tyumen State University,Tyumen,625003,Russia

出　　处：《Tungsten》2022年第2期149-157,共9页钨科技（英文）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 22001034);the Open Fund of the Jiangxi Province Key Laboratory of Synthetic Chemistry (Grant No. JXSC202008);the Research Found of East China University of Technology (Grant Nos. DHBK2019264, DHBK2019265, DHBK2019267)

摘　　要：In this study,a sandwich-type uranium(Ⅵ)-containing silicotungstate KNa11H2(H2O)30[Na(UO2)(SiW9O34)]2·8H2O(1)with new three-dimensional(3D)structure was synthesized and characterized using single-crystal X-ray diffraction,Fourier transform infrared,Raman,solid-state ultraviolet–visible diffuse reflection spectra,thermogravimetric analysis and powder X-ray diffraction.Single crystal analysis revealed that the Na(I)-H2O clusters in 1 showed a two-dimensional structure similar to(4,4)-network and resulted in the formation of a new 3D structure of 1.In addition,it was notable that 1 presented excellent catalytic activity for the synthesis of substituted phenylsulfonyl-1H-pyrazoles via the cyclization reaction of 1,3-diketones with various substituted benzenesulfonyl hydrazides.

关 键 词：Uranium POLYOXOTUNGSTATES Condensation reaction Phenylsulfonyl-1H-pyrazoles 

分 类 号：O626.21[理学—有机化学] O641.3[理学—化学]