ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The PMR spectra of isomeric p-tolyl-thienyl carbonium ions and the corresponding carbinols were studied in order to compare the relative abilities of 2-thienyl, 3-thienyl and p-tolyl groups to stabilize a carbonium ion. The low field shifts in the ions relative to the neutral molecules are discussed in terms of positive charge delocalisation, as seen by a comparison with calculated π charge densities. Additionally, vicinal coupling constants fit a correlation with π bond order, but this applies only to the thienyl groups in the ionic species.
Additional Material:
5 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270040307
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