Dipole moments of flourobenzene and its mesogenic derivative in 1,4-dioxane and 1-butanol solutions

A. Ghanadzadeh Gilani*, A. Ranjkesh, M.S. Beevers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)557-570
Number of pages14
JournalJournal of Solution Chemistry
Volume38
Issue number5
Early online date10 Mar 2009
DOIs
Publication statusPublished - 1 May 2009

Keywords

  • dipole moment
  • fluorinated compounds
  • Kirkwood factor
  • molecular association
  • permittivity
  • polar binary mixtures

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