
%0 Journal Article
%A Jones, A 
%T Pyrrole studies. II. The structure of 2-pyrrolylmethyleneimines
%J Australian Journal of Chemistry
%D 1964/08/01
%V 17
%N 8
%P 894-900
%K 
%R https://doi.org/10.1071/CH9640894
%U https://www.publish.csiro.au/paper/CH9640894 
%X 2-Pyrrolylmethyleneimines (III) are shown to exist as such and not in the alternative tautomeric form (IV). The graph obtained on plotting the long wave- length ultraviolet band of the aryl compounds (III: R = aryl) against their Hammett &#963; value is non-linear. This is explained in terms of the relative energies of the ground and excited states of the compounds and is also due to the overall electron-donating effect of the pyrrole ring. 
