ISSN:
1573-1111
Keywords:
SO2-Hydroquinone clathrate
;
SO2-β-quinol clathrate
;
dielectric
;
solid state13C NMR
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Dielectric measurements of SO2 quinol clathrates show that the reorientation of encaged SO2 molecules is very rapid and depends greatly on the degree of cage occupancy. For aβ-quinol sample of cage occupancyθ = 0.57, the reorientation rate was ∼ 1 MHz at 6 K, with a reorientational activation energy of 673 J/mol. For a sample identified by13C NMR asα-quinol, and for aβ-quinol sample with most cages filled with Xe, SO2 reorientation rates are even greater, with activation energies of only some tens of J/mol. The low temperature dielectric studies show that some ethanol may be enclathrated inβ-quinol recrystallized from this solvent. The13C NMR spectra confirm the X-ray results that the lattice becomes distorted with increased SO2 content.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01131296
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