ISSN:
0749-1581
Schlagwort(e):
Tribromobenzene
;
13C spin-lattice relaxation times
;
correlation times
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The 13C spin-lattice relaxation times and nuclear Overhauser enhancements of protonated carbons in 1, 3, 5-tribromobenzene were measured in a number of solvents of widely varying viscosity, Derived reorientational correlation times were found to increase approximately linearly with solution viscosity, as predicted by hydrodynamic theories of rotational diffusion.Rotational correlation times calculated from the perrin stick model were two to three times longer than the measured τc values. Similarly, correlation times predicted by the Hu-Zwanzig slip model were too small by a factor of two. On the other hand, application of the newer Hynes-Kapral-Weinberg theory furnished reorientational correlation times that were in virtually quantitative agreement with the experimental results.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/mrc.1260260807
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