Abstract
Experimental data from dielectric investigations of solutions of flourobenzene (FB) and its mesogenic derivative (1-fluoro-4-(4-pentylcyclohexyl) benzene (FPCHB) in 1,4-dioxane are reported for various mole fractions and temperatures. The molecular dipole moments were determined using the Guggenheim-Debye method in the temperature range of 298.2 to 318.2 K. Both fluorinated compounds show a positive and small temperature coefficient for the effective dipole moment. Variations of the effective dipole moment and correlation factor, g, with mole fraction in these mixtures were investigated using the Kirkwood-Frohlich equation. Dielectric measurements were also carried out on binary mixtures of FPCHB with 1-butanol for various concentrations at 318.2 K. The Kirkwood correlation factor, the Bruggeman factor, and the excess permittivity were determined.
| Original language | English |
|---|---|
| Pages (from-to) | 557-570 |
| Number of pages | 14 |
| Journal | Journal of Solution Chemistry |
| Volume | 38 |
| Issue number | 5 |
| Early online date | 10 Mar 2009 |
| DOIs | |
| Publication status | Published - 1 May 2009 |
Keywords
- dipole moment
- fluorinated compounds
- Kirkwood factor
- molecular association
- permittivity
- polar binary mixtures
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