The reduction of thioether and carboxylate chelates of cobalt(III) by chromium(II)
Abstract
The rates of reduction by chromium(II) of Co(en)2(NH2CH2CO2)2+(carboxylate-bridged), Co(en)2(O2CCH2SMe)2+(carboxylate-bridged) and Co(en)2(NH2CH2SMe)3+(outer-sphere) indicate reactivity advantages for chelated bridging carboxylate and nonbridging cis thioether ligands in inner-sphere reactions and a high reactivity associated with thioether functions in outersphere reactions.