Journal of Solution Chemistry

, Volume 20, Issue 6, pp 565–582 | Cite as

Dielectric properties of solutions of tetra-iso-pentylammonium nitrate in dioxane-water mixtures

  • Tove Sigvartsen
  • Jon Songstad
  • Bo Gestblom
  • Erik Noreland
Article

Abstract

Dielectric properties of solutions of tetra-iso-pentylammonium nitrate, i-Pen 4 NNO 3 . in various dioxane-water mixtures have been studied using dielectric time domain spectroscopy (TDS). The static permittivity of the solutions ɛs increases for low concentrations of solute but levels off to asymptotic values at higher concentrations. The limiting slopedɛsdc, and the asymptotic value depend on the static permittivity of the solvent mixture. The relaxation time due to the solute varies with solute concentration and depends on the solvent mixture. In the solvent mixtures of lowest permittivity the plots of relaxation time vs. concentration go through a maximum, while in the mixtures of highest permittivity the relaxation time initially decreases and then levels off to an asymptotic value. The concentration dependence of the dielectric parameters is discussed in relation to ion association.

Key Words

Dielectric static permittivity relaxation tetra-isopentylammonium nitrate dioxane-water mixtures ionic association time domain spectroscopy (TDS) 

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Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • Tove Sigvartsen
    • 1
  • Jon Songstad
    • 1
  • Bo Gestblom
    • 2
  • Erik Noreland
    • 2
  1. 1.Department of ChemistryUniversity of BergenBergenNorway
  2. 2.Department of PhysicsUppsala UniversityUppsalaSweden

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