Abstract
The stoichiometry of the redox reaction of caffeic acid with iron(III) was determined at pH 2.5. A linear increase in the yield of iron(II) was found with increasing iron(III) concentration until reached constant values when iron(III)/caffeic acid molar ratios were higher than 9. The reaction proceeds through two steps each having different rates, and involving intermediates with different redox activities. A mechanism of the redox reaction consistent with our results is proposed.
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Deiana, S., Gessa, C., Manunza, B. et al. Mechanism and stoichiometry of the redox reaction between iron(III) and caffeic acid. Plant Soil 145, 287–294 (1992). https://doi.org/10.1007/BF00010357
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DOI: https://doi.org/10.1007/BF00010357