淡江大學機構典藏:Item 987654321/102132
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62830/95882 (66%)
造访人次 : 4032877      在线人数 : 992
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/102132


    题名: 含吡啶腙基配位子銀錯合物之金屬超分子研究
    其它题名: Metallo-supranolecules based on silver complexes with pyridine-hydrazone deviative ligands
    作者: 李俊暉;Li, Chun-Hui
    贡献者: 淡江大學化學學系碩士班
    王文竹;Wang, Wen-Jwu
    关键词: 超分子;銀錯合物;自組裝;螺旋錯合物;腙基;Supramolecule;Silver complex;Self-assembly;helicate;Hydrazone
    日期: 2014
    上传时间: 2015-05-04 09:48:12 (UTC+8)
    摘要: 在本研究中,合成了亞胺腙基吡啶型配位子L1、L2、L3、L4以及L5,與銀離子配位得到[Ag2L22](BF4)2 (1)、{[Ag4L32(H2O)2](BF4)4‧2H2O}∞ (2)、[Ag3L52]2(PF6)5 (3)、[Ag2L52](PF6)2 (4)對其特性進行研究。

    L2可與銀鹽形成Ag2L2的錯合物(1),配位子上氧原子擔任架橋同時配位兩個銀離子;L3可與銀鹽進一步形成coordination polymer的錯合物(2);L5根據合成方式的不同,能夠形成雙核以及三核的雙股螺旋錯合物,並且銀-銀距離皆小於銀離子凡得瓦半徑合,靠著分子間的π-π作用力進一步形成無限的一維金屬線

    L5的核磁共振光譜滴定實驗與錯合物3的核磁共振光譜比較,觀察出即使錯合物是Ag3L52
    ,在溶液態中需要更大量的銀才能維持穩定的結構,並且藉由變溫核磁共振光譜實驗可得知溫度的改變會使錯合物2、3的結構扭曲。

    在研究分子自組裝方面,利用UV-Vis滴定測量以銀鹽滴定配位子的光譜變化,再以SPECFIT計算得知分子的反應機制是以L、AgL、AgL2、Ag4L2、。

    固態結構與自組裝反應的實驗結果一致,證明此系列的配位子在與銀形成錯合物時,可自組裝形成穩定的錯合物。
    In this research, a series of new ligands (L1、L2、L3、L4 and L5) containing hydrazone and derivative pyridine moiety were synthesized. Four silver complexes, [Ag2L22](BF4)2 (1)、{[Ag4L32(H2O)2](BF4)4‧2H2O}∞ (2)、[Ag3L52]2(PF6)5 (3)、[Ag2L52](PF6)2 (4) have been prepared and characterized by X-ray diffraction study.

    Complex 1 synthesis from L2 and silver salt, the oxygen atoms were bridge two silver ions. Complex 2 can further form coordination polymer. According to different synthesis, L5 can form Ag3L52 and Ag2L52 complexes. The Ag-Ag distance smaller than the sum of Van der Waals radii of silver ion. The π−π stacking interaction to form polymeric superstructure.

    Compare with NMR titration of L5 and NMR of complex 3, we found that even if the formation of complex 3 is Ag3L52, complex 3 need more silvers to stabilize the structure in solution state, and we found that the structure of complex 2 and 3 will distorted by using the VTNMR studys.

    The self-assembling process and reaction mechanism were studied by UV-Vis titration. The step-wise and overall ability constant of L、AgL、AgL2、AgL2、Ag4L2 were investigated by systematic measurement.

    The results were consistent for the crystal and titration of L2 with AgPF6. Overall, double helical structure is the most stable conformation of L2 silver complex.
    显示于类别:[化學學系暨研究所] 學位論文

    文件中的档案:

    档案 大小格式浏览次数
    index.html0KbHTML182检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈