Mechanism of reduction of thiosulfate ions on the cathode

Shvab, N. A.; Litovchenko, V. G.; Rudkovskaya, L. M.

doi:10.1134/s1070427207110146

Cited by 14 publications

(5 citation statements)

References 4 publications

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“…The products of both enzymatic 37,38 and electrochemical 63 reduction of thiosulfate are hydrogen sulfide and sulfite, i.e. , in the course of reduction the S–S bond cleaves.…”

Section: Resultsmentioning

confidence: 99%

Kinetics and mechanism of oxidation of super-reduced cobalamin and cobinamide species by thiosulfate, sulfite and dithionite

et al. 2013

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We studied the kinetics of reactions of cob(I)alamin and cob(I)inamide with thiosulfate, sulfite, and dithionite by UV-Visible (UV-Vis) and stopped-flow spectroscopy. We found that the two Co(I) species were oxidized by these sulfur-containing compounds to Co(II) forms: oxidation by excess thiosulfate leads to penta-coordinate complexes and oxidation by excess sulfite or dithionite leads to hexa-coordinate Co(II)–SO2− complexes. The net scheme involves transfer of three electrons in the case of oxidation by thiosulfate and one electron for oxidation by sulfite and dithionite. On the basis of kinetic data, the nature of the reactive oxidants was suggested, i.e., HS2O3− (for oxidation by thiosulfate), S2O52−, HSO3−, and aquated SO2 (for oxidation by sulfite), and S2O42− and SO2− (for oxidation by dithionite). No difference was observed in kinetics with cobalamin(I) or cobinamide(I) as reductants.

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“…The products of both enzymatic 37,38 and electrochemical 63 reduction of thiosulfate are hydrogen sulfide and sulfite, i.e. , in the course of reduction the S–S bond cleaves.…”

Section: Resultsmentioning

confidence: 99%

Kinetics and mechanism of oxidation of super-reduced cobalamin and cobinamide species by thiosulfate, sulfite and dithionite

et al. 2013

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“…The reactants for such processes are quite possibly supplied from the H 2 S -O 2 reaction products, since their concentration keeps increasing in the limited volume reactor vessel over time. For instance, thiosulfate is recognized as a candidate for direct cathodic reduction, either directly as an oxidizing agent, or in combination with atomic hydrogen already present at the surface of the electrode [20]:…”

Section: Impact Of O 2 On Hydrogen Uptakementioning

confidence: 99%

Impact of oxygen contamination on the electrochemical impedance spectroscopy of iron corrosion in H2S solutions

et al. 2020

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“…Overall, the oxidation state of the sulfur atoms in thiosulfate is 2+; however, this is based on an average formal oxidation state of the two sulfur atoms. With regard to the formal oxidation states of each sulfur, there are three likely options: (a) S 2– –S 6+ –O 3 , (b) S 0 –S 4+ –O 3 , and (c) S – –S 5+ –O 3 . − All options give an average oxidation state of 2+, as both the Latimer diagram and the Eh–pH diagram describe . Option a allows for the central sulfur in thiosulfate to be reduced to form sulfite, whereas the terminal sulfur can simply dissociate to form sulfide .…”

Section: Introductionmentioning

confidence: 99%

Syntheses and Structures of the First Lanthanide–Thiosulfate Complexes and the Subsequent Formation of Mixed Thiosulfate–Sulfite Compounds

Dalton

Blomberg

Villa

2021

Crystal Growth & Design

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The first rare-earth (RE) thiosulfate complexes, RE(S2O3)6 9–, have been crystallized via room-temperature reactions and structurally characterized through single-crystal X-ray diffraction. The incorporation of KCl was essential to their successful crystallization. Then through the use of both solvent-layering and heating techniques, these complexes can undergo structural changes through breaking the thiosulfate S–S bond and forming the sulfite anion (SO3 2–). Using the former approach, two novel lanthanide mixed thiosulfate–sulfite compounds were synthesized; moreover, through the addition of low-temperature heating time, a new structure with a higher proportion of sulfite to thiosulfate was produced. These syntheses and techniques open the door to a new family of unexplored complexes containing hard lanthanide cations and soft thiosulfate anions. The 23 compounds discussed herein show how simple changes to the synthetic process illuminate manipulatable redox reactions able to produce unique rare-earth thiosulfate materials.

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Mechanism of reduction of thiosulfate ions on the cathode

Cited by 14 publications

References 4 publications

Kinetics and mechanism of oxidation of super-reduced cobalamin and cobinamide species by thiosulfate, sulfite and dithionite

Kinetics and mechanism of oxidation of super-reduced cobalamin and cobinamide species by thiosulfate, sulfite and dithionite

Impact of oxygen contamination on the electrochemical impedance spectroscopy of iron corrosion in H2S solutions

Syntheses and Structures of the First Lanthanide–Thiosulfate Complexes and the Subsequent Formation of Mixed Thiosulfate–Sulfite Compounds

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