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A Sb‐embedded polyoxoniobate has been originally synthesized under hydrothermal conditions. Particularly, the peanut‐like [Sb2Nb24O72]18− cluster cage in 1 with C2h symmetry is composed of two 9‐nuclear {SbNb9O33} motifs and one {Nb6O24} crown‐shaped ring. The compound 1 present the novel structure of Sb‐substituted sandwich‐type polyoxoniobate with antimoniobate cluster cage. Decomposition catalytic studies indicate that compound 1 exhibits good hydrolytic activity and stability on the degradation of nerve agent simulant dimethylphosphonate (DMMP). [ABSTRACT FROM AUTHOR]

In this paper, we report a series of novel mixed‐metal‐substituted organic‐inorganic hybrid polyoxometalates (POMs) H3[(CH3)4N]14[NaLn(PW11O39)3]·18H2O (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)4N]+ 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. A series of unprecedented linear mixed‐metal‐substituted organic‐inorganic hybrid polyoxometalate trimers H3[(CH3)4N]14[NaLn(PW11O39)3]·18H2O (1‐Ln, Ln = Nd, Sm, Eu), composed of both alkali‐metal‐ and lanthanide‐substituted keggin‐type POMs, show interesting luminescence and proton conductive properties. [ABSTRACT FROM AUTHOR]

Four indium-based heterometallic metal-organic frameworks In3M(IMDC)3(NO3)2(H2O)6 ·solvent ( 2-M, M = Mn, Co, Zn, Mg, H3IMDC = imidazole-4,5-dicarboxylic acid) have been made under solvothermal conditions, and are characterized by single-crystal X-ray diffraction studies, energy-dispersive X-ray spectroscopy, infrared spectroscopy, thermogravimetric analysis, and powder X-ray diffraction analysis. Structural analysis indicates that 2-M exhibit 3D porous frameworks generated by linking three intersecting 1D In-IMDC helical chains with different M2+ ions. Powder X-ray diffraction studies reveal that 2-M exhibit good thermal and water stability. Furthermore, 2-M show moderate gas adsorption abilities that can be modulated by introducing different M2+ ions. Finally, the solid-state luminescent emissions of 2-M at room temperature are also elucidated. [ABSTRACT FROM AUTHOR]