
%0 Journal Article
%A Hatton, PM 
%A Sternhell, S 
%T An N.M.R. Investigation of Polarization of Pyridine by +R Substituents and a Proposed New Method for Determination of the Substituent Resonance Parameter (&#963;<sub>R</sub>)
%J Australian Journal of Chemistry
%D 1993/01/01
%V 46
%N 1
%P 149-152
%K 
%R https://doi.org/10.1071/CH9930149
%U https://www.publish.csiro.au/paper/CH9930149 
%X The previously established 1H n.m.r. method of probing bond order1 has been used to show that electron-donating (+R) substituents at C2 of pyridine cause significant ground-state polarization of the heteroaromatic system. This has led to a new and independent method of estimating the substituent resonance parameter (&#963;R ). 
