Kinetics of oxidation of tris-(2,2'-bipyridyl)cobalt(II) by iron(III)-2,2'-bipyridyl complex - Micellar effect of sodium dodecylsulphate

Iron(III)-2,2'-bipyridyl complex obtained, in situ, by direct mixing of iron(III) and 2,2'-bipyridyl, oxidises \ Co(Bipy)(3)(2+) and the reaction is markedly accelerated by sodium dodecylsulphate. The rate-[surfactant] profile exhibits a maximum. The kinetic analysis of the micellar effect has been carried out using Berezin's approach. The binding constants of 2,2'-bipyridyl and Co(Bipy)(3)(2+) have been determined.