
%0 Journal Article
%A Rockley, J 
%A Summers, L 
%T Chemical Constitution and Activity of Bipyridinium Herbicides. XIII. Synthesis, Reduction Potential and Biological Activity of 1-Methyl-4-[[(methylpyridinium-4-yl)Imino]methyl]pyridinium Diiodide
%J Australian Journal of Chemistry
%D 1980/06/01
%V 33
%N 6
%P 1397-1400
%K 
%R https://doi.org/10.1071/CH9801397
%U https://www.publish.csiro.au/paper/CH9801397 
%X A diquaternary salt from the azomethine N-(pyridin-4- ylmethylene)pyridin-4-amine has been prepared. The salt is slowly reduced by zinc dust in aqueous solution to a red radical cation at a potential (E0) of -0.64 V in the pH range 5.2-8.0. In keeping with its low reduction potential the salt is very much less active than paraquat as a post-emergent herbicide. 
