Abstract
COBALT complexes of dimethylglyoxime (CH3C:NOH.C:NOH.CH3), commonly known as cobaloximes, form alkyl derivatives with unusually stable cobalt–carbon bonds1,2. These are regarded by some workers as ‘model’ compounds for vitamin B12, a biological alkylating agent, the action of which depends on the reversible formation of a similar Co–C bond3–5. Various mechanisms have been postulated for this reaction6. The mechanisms of transalkylation reactions undergone by cobaloximes are thus of great interest; such reactions have been investigated with Hg2+ (refs 7 and 8) and with Cr2+ (ref. 9). For comparison we are studying the reaction kinetics of other cobaloximes with Cr2+. These are apparently electron–transfer reactions10–12, and should also be considered in the context of the large volume of work that has been done in that field.
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PRINCE, R., SEGAL, M. Cr2+-cobaloxime electron transfer reactions. Nature 249, 246–247 (1974). https://doi.org/10.1038/249246a0
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DOI: https://doi.org/10.1038/249246a0
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