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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/102132

    Title: 含吡啶腙基配位子銀錯合物之金屬超分子研究
    Other Titles: Metallo-supranolecules based on silver complexes with pyridine-hydrazone deviative ligands
    Authors: 李俊暉;Li, Chun-Hui
    Contributors: 淡江大學化學學系碩士班
    王文竹;Wang, Wen-Jwu
    Keywords: 超分子;銀錯合物;自組裝;螺旋錯合物;腙基;Supramolecule;Silver complex;Self-assembly;helicate;Hydrazone
    Date: 2014
    Issue Date: 2015-05-04 09:48:12 (UTC+8)
    Abstract: 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



    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.
    Appears in Collections:[化學學系暨研究所] 學位論文

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