Issue 11, 1977
From the journal:

Journal of the Chemical Society, Dalton Transactions

Kinetics and mechanism of the osmium(VIII)-catalyzed oxidation of phosphite by hexacyanoferrate(III) ion in aqueous alkaline media

Devendra Mohan  and  Yugul K. Gupta  

Abstract

The oxidation of phosphite by alkaline [Fe(CN)6]3– occurs with a measurable rate at 35 °C in the presence of OsVIII according to equation (i) and rate law (ii), where k is the rate constant and K3 is the equilibrium constant for 2[Fe(CN)6]3–+[HPO3]2–+ 2[OH]–→ 2[Fe(CN)6]4–+[HPO4]2–+ H2O (i), –d[Fe(CN)63–]/dt=2kK3[OsVIII][OH–][HPO32–]//1 +K3[OH–](ii) the complex formation between OsVIII and [OH]–; k and K3 are 1.0 ± 0.05 dm6 mol–2s–1 and 32 ± 3 dm3 mol–1 respectively at 35 °C and I= 1.0 mol dm–3. A spectrophotometric value of K3 is 30 ± 6 dm3 mol–1. A mechanism consistent with the above facts has been suggested.

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Article information

DOI
https://doi.org/10.1039/DT9770001085
Article type
Paper

J. Chem. Soc., Dalton Trans., 1977, 1085-1089

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Kinetics and mechanism of the osmium(VIII)-catalyzed oxidation of phosphite by hexacyanoferrate(III) ion in aqueous alkaline media

D. Mohan and Y. K. Gupta, J. Chem. Soc., Dalton Trans., 1977, 1085 DOI: 10.1039/DT9770001085

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