English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65421/65421 (100%)
Visitors : 22355906      Online Users : 367
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6113


    Title: 含有機分子之氟化鈾化合物的合成、結構鑑定與物性探討;Synthesis,Characterization and Properties of Organically Templated Uranium Fluorides
    Authors: 廖家賢;Chia-Hsien Liao
    Contributors: 化學研究所
    Keywords: 水熱合成;結構鑑定;structure;hydrothermal synthesis
    Date: 2005-07-01
    Issue Date: 2009-09-22 10:13:25 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 摘要 本論文中以水熱法合成出四個新穎結構的氟化鈾化合物以及一個等結構氟化鈾化合物,茲將化合物所列如下: (U-1) : [N(CH2CH2NH3)3][UVIO2F3][UIV2F10].2H2O (U-2) : [N(CH2CH2NH3)3] [U3F15] (U-3) : [H4APPIP][U4F20] (U-4) : [H3DETA] [U2F11] (U-5) : [H4TETA][U2F12] 以上所列化合物均得到單晶,由單晶X-光繞射儀鑑定出結構;之後由粉末X-光繞分析確定產物的純度以及元素分析( EA)確定化合物中C、H、N等元素比例。利用熱重分析(TGA)研究化合物的熱性質;最後利用超導量子干涉磁量儀(SQUID)來量測化合物的磁性現象。 在氟化鈾的系統中化合物(U-1)是第一個具有二維和一維無機結構的混價化合物。化合物(U-2)是在此系統中是第一個同時具有共角、共邊和共面的二維結構。化合物(U-3)為新穎的二維層狀結構;其構造是由雙鏈(double chain)經共角方式連接形成具有六圓環的二維結構。化合物(U-4)為新穎的二維層狀結構;其構造是由UF8和UF9多面體經共角和共邊的方式連接形成具有八圓環的二維結構。化合物(U-5)是一維鏈狀等結構的化合物。 Recently, Uranium chemistry becomes greatly inviting, owing the high coordination numbers and variety of coordination geometries could be expected to synthesize new, complex framework architectures in the presence of organic species, and the demonstrated applications in fabrication of devices with optical, magnetic, and catalytic properties. We have synthesized some interesting compounds under hydrothermal conditions. [N(CH2CH2NH3)3][U3O2F13]·2H2O (U-1) 2D layer [N(CH2CH2NH3)3] [U3F15] (U-2) 2D layer [H4APPIP][U4F20] (U-3) 2D layer [H3DETA][U2F11] (U-4) 2D layer [H4TETA][U2F12] (U-5) 1D chain These compounds have been characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and magnetic susceptibility measurements.The variable-temperature magnetic susceptibility of these compounds are consistent with antiferromagnetic interactions between U(IV) centers.
    Appears in Collections:[化學研究所] 博碩士論文

    Files in This Item:

    File SizeFormat
    0KbUnknown484View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明