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Issue 38, 2011
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Cobalamin reduction by dithionite. Evidence for the formation of a six-coordinate cobalamin(II) complex

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Abstract

Evidence for the formation of a unique, six-coordinate cobalamin(II) complex with the anion-radical SO2 during the reduction of aquacobalamin(III) by sodium dithionite, was obtained from spectrophotometric and EPR measurements. The pKa value of the weakly coordinated dimethylbenzimidazole group was found to be 4.8 ± 0.1 at 25 °C.

Graphical abstract: Cobalamin reduction by dithionite. Evidence for the formation of a six-coordinate cobalamin(ii) complex

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Publication details

The article was received on 08 Feb 2011, accepted on 24 Jun 2011 and first published on 30 Aug 2011


Article type: Paper
DOI: 10.1039/C1DT10219B
Citation: Dalton Trans., 2011,40, 9831-9834
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    Cobalamin reduction by dithionite. Evidence for the formation of a six-coordinate cobalamin(II) complex

    D. S. Salnikov, R. Silaghi-Dumitrescu, S. V. Makarov, R. van Eldik and G. R. Boss, Dalton Trans., 2011, 40, 9831
    DOI: 10.1039/C1DT10219B

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