p,T Dependence of Self-diffusion in Fluoroethanols.
-
- Price W. E.
- Department of Chemistry, University of Wollongong
-
- Karger N.
- Institut für Biophysik und physikalische Biochemie, Universität Regensburg
-
- Gross T.
- Institut für Biophysik und physikalische Biochemie, Universität Regensburg
Bibliographic Information
- Other Title
-
- p T Dependence of Self-diffusion in Flu
Search this article
Abstract
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, To, 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.
Journal
-
- The Review of High Pressure Science and Technology
-
The Review of High Pressure Science and Technology 7 1207-1209, 1998
The Japan Society of High Pressure Science and Technology
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282679358863616
-
- NII Article ID
- 10002693384
-
- NII Book ID
- AN10452913
-
- ISSN
- 13481940
- 0917639X
-
- NDL BIB ID
- 4494192
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed