Self-assembly of a new 3D platelike ternary-oxo-cluster:An efficient catalyst for the synthesis of pyrazoles  

作　　者：Guoping Yang Yufeng Liu Xiaoling Lin Bangming Ming Ke Li Changwen Hu 

机构地区：[1]Jiangxi Province Key Laboratory of Synthetic Chemistry,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,East China University of Technology,Nanchang 330013,China [2]Jiangxi Engineering Technology Research Center of Nuclear Geoscience Data Science and System,East China University of Technology,Nanchang 330013,China [3]Key Laboratory of Cluster Science of Ministry of Education,School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Chinese Chemical Letters》2022年第1期354-357,共4页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22001034,21871026,21804019);the Open Fund of the Jiangxi Province Key Laboratory of Synthetic Chemistry(No.JXSC202008);the Research Found of East China University of Technology(Nos.DHBK2019264,DHBK2019265,DHBK2019267)。

摘　　要：A new metal-oxo-clusters-based inorganic framework[NaCo_(2)Mo_(2)O_(7)(OH)_(3)]_(n)(NaCoMo),named as 3D platelike ternary-oxo-cluster,has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction structure analysis,FT-IR spectroscopy,powder X-ray diffraction(PXRD),scanning electron microscope(SEM),energy-dispersive X-ray spectroscopy(EDS)analyses,X-ray photoelectron spectroscopy(XPS)and thermogravimetric analysis(TGA).Structure analysis reveals that there are no classical building units in NaCoMo,and the asymmetric units of NaCoMo are directly extended into a new platelike 3D structure.Density functional theory calculations(DFT)indicates that the crystal formation process is exothermic and the structure is extremely stable.In addition,the compound presents excellent catalytic activity in the condensation and cyclization reaction of sulfonyl hydrazides and 1,3-diketones to synthesize pyrazoles,and the yield of the desired product is up to 99%.The successful synthesis of NaCoMo represents the discovery of a new kind of non-classical polyoxometalates.

关 键 词：POLYOXOMETALATES Oxo clusters 3D inorganic framework Condensation reaction PYRAZOLES 

分 类 号：O626.21[理学—有机化学] O643.36[理学—化学]