Reactions the Role of Adsorption

The previously discussed oxidation of olefin-Hg(II) complexes (p. 48) in aqueous perchloric acid behaves similarly to the Kolbe reaction, oxygen evolution between 1-4 and 1-8 V being displaced by the organic process at a potential above 2 3 V. 

In general, competition reactions between two substrates instead of between substrate and SSE components can show similar features as those discussed above. As an example, methyl iodide reduces at a potential 0 1 V more anodic than ethyl iodide at a lead cathode and 

Another type of mutual interaction between two substrates in competition reactions is the phenomenon that one substrate can influence the product distribution from another one (Eberson and Wilkinson, 1972). Thus, 5 mole % of pyrene added to an electrolyte solution for acetoxylation of anisole (HOAc/NaOAc) changed the o/p ratio from 2 2 to T3. Similar behaviour was observed for other mixtures. 

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Orientation Effects Induced by the Electrode Surface Competing Reactions the Role of Adsorption Adsorption versus -values. ... 

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