
TY  - JOUR
A1  - Fong, CW 
T1  - Electronic effects of halogen-substituted methyl groups
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1980
VL  - 33
IS  - 6
SP  - 1291
EP  - 1300
KW  - 
UR  - https://doi.org/10.1071/CH9801291 
N2  - The electronic effects of the halogen-substituted methyl groups, CHnX3-n, where X is F, Cl, Br or I, have been examined by 13C n.m.r, spectroscopy in a series of &#945;-halogen-substituted toluenes. The substituent chemical shifts of all carbon atoms, as well as the &#963;I and &#963;R0 substituent parameters derived from a dual substituent parameter (DSP) analysis, are examined in terms of hyperconjugative and &#960;-inductive substituent effects. Bulky CHnX3-n substituents cause molecular deformations of the benzene ring, consequently invalidating the derivation of substituent parameters from a DSP analysis. 
ER  -

