Glyoxylate (gox) catalyses the reduction of [Mn(pd),] to Mn" in aqueous perchlorate media (pH 5.5-7.5) containing excess of pentane-2,4-dione (Hpd). I n this process, 1 rnol of Hpd, but no gox, is consumed per rnol of Mn"' reduced. E.p.r. studies indicate the generation of a pd' radical in a cyclic redox process. The kinetically active manganese( 111) species are [Mn(pd),(gox)] and [Mn(pd),( H,O) (OH)]; [Mn(pd),] makes no appreciable contribution to the rate. The rate constants * A very similar e.p.r. spectrum was observed in the course of the thermal decomposition of [Ru(pd),] in acid perchlorate media (B. Chakraborty, personal communication).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.