
%0 Journal Article
%A Calf, GE 
%A Garnett, JL 
%A Pickles, VA 
%T Catalytic deuterium exchange reactions with organics. XL. Pyridine, the quinolines, azines, and aniline on unsupported Group VIII transition metals
%J Australian Journal of Chemistry
%D 1968/04/01
%V 21
%N 4
%P 961-972
%K 
%R https://doi.org/10.1071/CH9680961
%U https://www.publish.csiro.au/paper/CH9680961 
%X Pyridine, the quinolines, pyridazine, pyrimidine, pyrazine, s-triazine, and aniline have been exchanged with heavy water on the following Group VIII transition metals: Fe, Co, Ni, 0s. Ru, Rh, Pd, Ir, and Pt. Three types of catalyst activation have been used, including self-activation, hydrogen and sodium borohydride reduction of the inorganlo salts. Platinum is the most useful catalyst for general exchange whereas cobalt possesses valuable specificity for selective a exchange in a large number of the heterocyclic compounds. A kinetic study of the deuteration of pyridine on platinum has been performed. The exchange results have been rationalized in terms of charge-transfer adsorbed intermediates. E.s.r. has been used to support this conclusion for the interaction between pyridine and potassium chloropalladite. &#960;-Complex mechanisms have been proposed to explain the observed deuteration behaviour. 
