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- W1972721752 abstract "The kinetics of reduction of iron(III) in pyridine-2-carboxylate, picolinate (pic–), solutions by ascorbate ion show a complex dependence upon pH, ligand concentration, and reductant concentration. The data analysis reveals a single redox-active species, [Fe(pic)2(OH)], which is reduced by ascorbate ion with a second-order rate constant of 6.4 × 103 dm3 mol–1 s–1 at 25 °C and I= 0.10 mol dm–3. This species is in rapid equilibrium with [Fe(pic)3], and the equilibrium constant between the two species is evaluated. Oxidations of iron(II) in picolinate solutions by [Co(pic)3] and [Co(ox)3]3–[ox = oxalate(2–)] reveal a dominant pathway involving [Fe(pic)2] and a minor pathway involving [Fe(pic)3]–. It is suggested that these are outer-sphere processes and Marcus theory is used to estimate self-exchange rates for the complexes." @default.
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- W1972721752 date "1986-01-01" @default.
- W1972721752 modified "2023-09-27" @default.
- W1972721752 title "Redox reactions of some iron(II), iron(III), and cobalt(II) picolinate complexes" @default.
- W1972721752 doi "https://doi.org/10.1039/dt9860000619" @default.
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