English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49090/83208 (59%)
造訪人次 : 7020143      線上人數 : 77
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25147


    題名: Preparation, structure and physical properties of the 1:1 1,3,6,8-tetrakis(ethylthio)pyrene-DDQ complex
    其他題名: 1 : 1之1, 3, 6, 8-Tetrakis(ethylthio)pyrene-DDQ錯合物的製備、結構和物性
    作者: 李榮熹;Lee, Jung-Si;Huang, Kuo-Chih;王文竹;Wang, Wen-jwu;Wang, Jim-Lung
    貢獻者: 淡江大學化學學系
    日期: 1995-03-15
    上傳時間: 2009-12-01
    出版者: Lausanne: Elsevier S.A.
    摘要: Two phases of 1:1 1,3,6,8-tetrakis(ehylthio)pyrene (TEPY) complex with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) have been isolated from a equi-molar mixture of TEPY and DDQ in dichloromethane by slow evaporation of the solvent. The α phase is obtained as black, branchy microcrystals and the β phase large black platelets. Both polymorphs are diamagnetic at room temperature and, in solutions, exhibit very similar electronic absorption spectra. However, their IR spectra are very different; the α phase gives broad bands while the β phase sharp peaks. The room-temperature conductivity is 0.13 and 3.0×10−6 S cm−1, respectively for the α and the β modification. The β phase crystallizes in the triclinic space group P1, with a=9.172(4), b=9.596(2), c=9.820(2)Å, α=72.60(2), β=75.89(3), γ=67.12(3)•, Z=1. The crystal structure consists of nearly planar TEPY and DDQ molecules stacking alternately along the c axis, consistent with the low conductivity of the β-phase complex.
    關聯: Synthetic metals 70(1-3), pp.1227-1228
    DOI: 10.1016/0379-6779(94)02830-R
    顯示於類別:[化學學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML247檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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