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Publication Type
Journal Article
UWI Author(s)
Author, Analytic
Dasgupta, Tara, P.; Beckford, F.A.; Stedman, G.
Author Affiliation, Ana.
Chemistry; Faculty of Pure and Applied Sciences
Article Title
Redox chemistry of [Fe2(CN)10]4- Part 2.1 Reaction with Thiosulfate
Medium Designator
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Connective Phrase
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Journal Title
Journal of the Chemical Society. Dalton Transactions
Translated Title
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Reprint Status
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Date of Publication
1993
Volume ID
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Issue ID
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Page(s)
3605-3608
Language
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Connective Phrase
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Location/URL
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ISSN
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Notes
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Abstract
The oxidation of thiosulfate by the iron (III) dimeric complex [Fe2(CN)10]4- in acidic aqueous solution at an ionic strength of 1.0 mol dm-3 (Na2SO4) has been investigated by stopped-flow and conventional spectrophotometry. The overall reaction is quite complicated, occurring in two distinct processes. The first comprises two steps, involving an intermediate, and results in a relatively fast one-electron reduction to [Fe2(CN)10]5-, the rate of which was monitored by the stopped-flow technique; this is followed by a much slower second reaction leading to fission of the cyanide bridges and the formation of the pentacyano (thiosulfato) ferrate-(II) and -(III) complexes. Separte mechanisms are given for each step based on the observed kinetic data.....
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Keywords
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