ISSN:
1572-8927
Keywords:
Conductance
;
density
;
viscosity
;
dielectric constants
;
tetrabutylammonium chloride, bromide, iodide, and perchlorate
;
LiCl
;
acetone
;
2-propanol
;
1,1,1,3,3,3-hexafluoro-2-propanol
;
ionic association
;
solvent structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Precise conductance measurements are reported for tetrabutylammonium chloride, bromide, iodie, and perchlorate and lithium chloride in acetone-2-propanol (2-PrOH) and acetone-1,1,1,3,3,3-hexafluoro-2-propanol (HFP) mixtures at 25°C. Densities, viscosities and dielectric constants of the mixtures were determined. The dielectric constant vs mole % acetone curve for the acetone (ε=19.4)-2-propanol (ε=20.5) goes through a minimum at 40% acetone (ε=17.4), while that for acetone-HFP (ε=16.8) goes through a maximum at 50% acetone (ε=26.87). The variations ofK A with ε in acetone-HFP are in accord with the predictions of electrostatic theory, while those for acetone-2-PrOH show more complex behavior. Ionic association in these mixtures is discussed in terms of an interplay between solvent structure and a multiple-step association process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00645574
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