p, T Dependence of Self-diffustion in Fluoroethanols

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The self-diffusion of ethanols substituted by fluorine at the methyl carbon has been studied by FTNMR using pulsed gradient spin-echo techniques for the first time. The results showed that the effects of adding fluorine appear to be steric in nature, with little effect of changing the hydroxyl hydrogen bond strength. 2, 2-difluoroethanol has a more pronounced temperature dependence than 2-fluoroethanol or 2, 2, 2-trifluoroethanol. In addition, analysis of the experimental data to a VTF type equation reveals that 2, 2-difluoroethanol has a much higher ideal glass transition temperature, T<SUB>o</SUB>, than either 2-fluoroethanol or TFE. These data indicate that steric conformations in difluoroethanol produce more stable hydrogen bonded structures than in the other two liquids. There is little evidence from these selfdiffusion data of anv effect of intra-molecular hydrogen bonding.

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  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 1207-1209, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002693384
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494192
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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