Polyoxometalate-Bridged Cu(I)- and Ag(I)-Thiacalix[4]arene Dimers for Heterogeneous Catalytic Oxidative Desulfurization and Azide–Alkyne “Click” Reaction
作者:Ming-Yue Yu、Ting-Ting Guo、Xiao-Chuan Shi、Jin Yang、Xianxiu Xu、Jian-Fang Ma、Zhen-Tao Yu
DOI:10.1021/acs.inorgchem.9b01557
日期:2019.8.19
ne dimers, namely, [Cu4(SiW12O40)(L)2(DMF)2]·2EtOH·DMF (1-Cu) and [Ag4(PMo12O40)(L)2]·OH (1-Ag), were prepared by using a new thiacalix[4]arene, metal cation and polyoxometalate (L = tetra[2-(ethylthio)-1-methyl-1H-imidazole]-thiacalix[4]arene). In 1-Cu and 1-Ag, two thiacalix[4]arenes were linked together by one [SiW12O40]4– or [PMo12O40]3– anion via two metal cations to give a molecular dimer. Further
两种重要的多金属氧酸盐桥连的Cu(I)和Ag(I)-硫杂杯[4]芳烃二聚体,即[Cu 4(SiW 12 O 40)(L)2(DMF)2 ]·2EtOH·DMF(1-铜和[Ag 4(PMo 12 O 40)(L)2 ]·OH(1-Ag),是使用新的噻唑杯[4]芳烃,金属阳离子和多金属氧酸盐(L =四[2-(乙硫基) )-1-甲基-1 H-咪唑]-噻杯[4]芳烃)。在1-Cu和1-Ag中,两个硫杂杯[4]芳烃通过一个[SiW 12 O 40 ] 4–连接在一起。或[PMo 12 O 40 ] 3–阴离子通过两个金属阳离子生成分子二聚体。此外,相邻的二聚体通过氢键延伸成高维超分子结构。值得注意的是,这些分子二聚体在有机溶剂中极其稳定,然后被用作催化氧化脱硫以及叠氮化物-炔烃“点击”反应的有效催化剂。