THE SPIN-DELOCALIZATION SUBSTITUENT PARAMETER SIGMA-CENTER-DOT-JJ. .9. CYCLODIMERIZATION RATES OF PARA-METHYLSULFINYL AND PARA-METHYLSULFONYL ALPHA,BETA,BETA-TRIFLUOROSTYRENES

Authors
JIANG XK JI GZ WANG ZR
Citation
Xk. Jiang et al., THE SPIN-DELOCALIZATION SUBSTITUENT PARAMETER SIGMA-CENTER-DOT-JJ. .9. CYCLODIMERIZATION RATES OF PARA-METHYLSULFINYL AND PARA-METHYLSULFONYL ALPHA,BETA,BETA-TRIFLUOROSTYRENES, Journal of fluorine chemistry, 66(2), 1994, pp. 187-192
Citations number
12
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Journal of fluorine chemistry → ACNP
ISSN journal
00221139
Volume
66
Issue
2
Year of publication
1994
Pages
187 - 192
Database
ISI
SICI code
0022-1139(1994)66:2<187:TSSPS.>2.0.ZU;2-K
Abstract
F-19 NMR data and rate constants for the thermal cyclodimerization of para-methylsulfinyl alpha,beta,beta-trifluorostyrene (1) and para-meth ylsulfonyl alpha,beta,beta-trifluorostyrene (2) have been measured. On the basis of these data, the sigma(mb) and sigma(JJ). values for p-Me SO and p-MeSO2 groups have been evaluated. Three methods for the calcu lation of the sigma(JJ). scale yielded the same set of sigma(JJ). cons tants.