ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The low-temperature 19F NMR spectra of (pentafluorophenyl)sulfur trifluoride are explained by the trigonal bipyramid structure (1a) with the pentafluorophenyl ring in the basal plane and a relatively high barrier to rotation about the C—S bond. In the presence of a hydrogen fluoride scavenger, there is a high barrier to intramolecular rearrangement of the sulfur fluorines about the sulfur atom. The single basal fluorine couples strongly with one ortho fluorine and weakly with the other, but the two apical fluorines couple equally with both ortho fluorines. A six-bond coupling between S—F and p—F is found in (pentafluorophenyl)sulfur trifluoride and in (pentafluorophenyl)-sulfinyl fluoride, but not in (pentafluorophenyl)sulfonyl fluoride.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270040509