
%0 Journal Article
%A Rae, ID 
%A Smith, LK 
%T Fluorine magnetic resonance studies. I. <I>para</I>-Substituted &#946;,&#946;-difluorostyrenes
%J Australian Journal of Chemistry
%D 1972/07/01
%V 25
%N 7
%P 1465-1471
%K 
%R https://doi.org/10.1071/CH9721465
%U https://www.publish.csiro.au/paper/CH9721465 
%X A series of seven para-substituted &#946;,&#946;-difluorostyrenes has been prepared and their proton and fluorine magnetic resonance spectra recorded. The fluorine spectra show interesting correlations with the &#963;- values for the para substituents, the fluorine resonances moving to lower field and the geminal fluorine-fluorine coupling constant decreasing as &#963;- increases. These trends parallel those observed in the analogous styrenes but rather more precise relationships have been established for the fluorine compounds. Long range fluorine-fluorine spin-spin coupling over six and seven bonds, respectively, has been observed in the &#946;,&#946;,&#946;,3- and &#946;,&#946;,4-trifluoro-styrenes. 
