
%0 Journal Article
%A Burgess, DA 
%A Finn, MF 
%A Jordan, D 
%A Rae, ID 
%A Walters, D 
%T Fluorine magnetic resonance studies. VII. Fluorine-fluorine coupling over five bonds in 1-Fluoro-2-(2'-fluorophenyl)ethanes
%J Australian Journal of Chemistry
%D 1984/08/01
%V 37
%N 8
%P 1769-1773
%K 
%R https://doi.org/10.1071/CH9841769
%U https://www.publish.csiro.au/paper/CH9841769 
%X Spin-spin coupling between an aromatic fluorine and fluorines in an adjacent side chain (Ar-C-C-F), with J values in the range 2-5 Hz, is reported for four new compounds. The coupling probably arises from through-space interactions taking place when rotation of the side chain brings the two types of fluorine into close proximity. In a Diels-Alder adduct of fluoranil and 1-fluoro-4-methyl- anthracene, this proximity is denied the fluorines and no coupling is observed. 
