摘要

In this paper, we report a series of novel mixed-metal-substituted organic-inorganic hybrid polyoxometalates (POMs) H-3[(CH3)(4)N](14)[NaLn(PW11O39)(3)]center dot 18H(2)O (1-Ln, Ln = Nd, Sm, Eu) via one-pot solvothermal synthesis methods, which present the first series of polyoxometalate trimers composed of both alkali-metal- and lanthanide-substituted keggin-type POMs. The trimeric heterometallic polyoxoanions in 1-Ln show an interesting linear arrangement and can be further packed together to generate a packing structure with cations [(CH3)(4)N](+) and H3O+ filling the gaps between polyoxoanions. Compounds 1-Ln are characterized by single-crystal X-ray diffraction analysis, TGA, IR and PXRD. Additionally, the luminescence and proton conductive properties of 1-Ln are also characterized.