ChemInform Abstract: ELECTRON TRANSFER BETWEEN TRANS‐DIHYDROXYTETRAOXOOSMATE(VIII) AND THIOSULFATE. A KINETIC STUDY IN AQUEOUS ALKALINE MEDIA

Panda, R. K.; Neogi, G.; Ramaswamy, D.

doi:10.1002/chin.198205028

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1983

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“…Equilibrium (2) was studied earlier [8] and the value of KOs, evaluated at 30°C and j t = 0.32M, was 19.5 f 3M-l.…”

Section: Discussionmentioning

confidence: 99%

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Electron transfer to trans‐dihydroxotetraoxoosmate(VIII). II. Kinetics of the oxidation of dimethylsulfoxide in aqueous alkaline media

Neogi

Acharya

Panda

et al. 1983

Int J of Chemical Kinetics

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The kinetics of the oxidation of dimethylsulfoxide by oxohydroxoosmate(VII1) complex ions in alkaline media follow pseudo-first-order disappearance in Os(VII1). The values of the observed pseudo-first-order rate constant are linearly dependent on initial dimethylsulfoxide concentrations in a fortyfold range, and increase with increasing [OH-], leveling off at higher relative [OH-]. The results are interpreted in terms of outer sphere interactions involving dimethylsulfoxide and various species of the Os(VII1) complex. The more nucleophilic dihydroxotetraoxoosmate(VII1) ion reacts about 50 times faster than the trihydroxotrioxoosmate(VII1) species.

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“…Equilibrium (2) was studied earlier [8] and the value of KOs, evaluated at 30°C and j t = 0.32M, was 19.5 f 3M-l.…”

Section: Discussionmentioning

confidence: 99%

“…Although osmium tetroxide has been extensively employed as a catalyst for redox reactions in alkaline medium [1,2], its use as an oxidant has largely been restricted to synthetic purposes only. Of late this latter trait has stimulated a considerable amount of interest from a mechanistic viewpoint.…”

Section: Introductionmentioning

confidence: 99%