ISSN:
1572-8927
Keywords:
Antimony trihalides
;
methanol
;
dielectric properties
;
hydrogen bonded structures
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The complex permittivities obtained by time domain reflectometry (TDR) measurements in the frequency range 0.1–15 GHz are reported for solutions of SbF3, SbCl3 and SbBr3 in methanol at 25°C. By increasing the concentration of the solutes, a marked increase of the main relaxation time and of the static permittivity of methanol is observed. These effects have been attributed to the ability of antimony (III) halides to strengthen the hydrogen bonding in methanol and to promote the shift of the dynamic equilibria among the various populations of hydrogen bonded methanol aggregates toward those characterized by a parallel orientation of neighboring dipoles. A second relaxation, occurring at low frequencies, was attributed to the rotational dynamics of the solvated solute molecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00647729
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