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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50865

    Title: Cs(2)USi(6)O(15): A Tetravalent Uranium Silicate
    Authors: Liu,HK;Lii,KH
    Contributors: 化學學系
    Date: 2011
    Issue Date: 2012-03-27 18:11:38 (UTC+8)
    Publisher: 國立中央大學
    Abstract: A uranium(IV) silicate has been synthesized under high-temperature, high-pressure hydrothermal conditions. The structure consists of unbranched dreier single layers with the composition [Si(2)O(5)] that are connected by UO(6) octahedra to form a 3D framework with 7-ring channels where the Cs(+) cations are located. Each UO(6) octahedron spans four neighboring dreier single chains and, therefore, introduces a high degree of corrugation in the silicate layers. The U 4f X-ray photoelectron spectroscopy spectrum was measured to confirm the valence state of the uranium. A comparison of related metal silicate structures is made. After the synthesis of this compound, all members in the family of uranium silicates and germanates with oxidation states of uranium from 4+ to 6+ have been observed.
    Appears in Collections:[化學學系] 期刊論文

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