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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50868


    Title: Cs(4)UGe(8)O(20): A Tetravalent Uranium Germanate Containing Four- and Five-Coordinate Germanium
    Authors: Nguyen,QB;Lii,KH
    Contributors: 化學學系
    Keywords: BOND-VALENCE PARAMETERS;CRYSTAL-CHEMISTRY;XPS SPECTRA;SILICATE;COFFINITE;MINERALS;CHANNELS
    Date: 2011
    Issue Date: 2012-03-27 18:11:41 (UTC+8)
    Publisher: 國立中央大學
    Abstract: A very rare tetravalent uranium germanate has been synthesized under hydrothermal conditions at 585 degrees C and 160 MPa. Its structure contains layers of single-ring Ge(3)O(9)(6-) germanate anions that are connected by UO(6) octahedra and dimers of edge-sharing GeO(5) trigonal bipyramids to form a three-dimensional framework with intersecting 6- and 7-ring channels. UV visible, photoluminescence, and U 4f X-ray photoelectron spectroscopy were used to confirm the valence state of uranium.
    Relation: INORGANIC CHEMISTRY
    Appears in Collections:[化學學系] 期刊論文

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