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Publication Type
Journal Article
UWI Author(s)
Author, Analytic
Bennett, Deon A.; Dasgupta, Tara P.; Stedman, Geoffrey
Author Affiliation, Ana.
Department of Chemistry
Article Title
Redox chemistry of [Fe2(CN)10]4. Part 5. Reaction with thiourea
Medium Designator
n/a
Connective Phrase
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Journal Title
Transition Metal Chemistry
Translated Title
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Reprint Status
Refereed
Date of Publication
1998
Volume ID
23
Issue ID
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Page(s)
749-53
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 reaction of the dimeric iron(III) complex [Fe2(CN)10]4- with a large excess of thiourea, tu, takes place in a series of stages, the first two of which have been examined in detail. The first stage is a one equivalent outer sphere electron transfer to form [Fe2-(CN)10]5- and the radical cation tu+ which dimerises to form the disulfide tu2+2. There is kinetic evidence for the formation of a significant proportion of a precursor complex [Fe2(CN)104-.tu at high concentrations of tu. The second stage involves cleavage of the mixed valence dimer to yield [Fe(CN)5tu]2- and [Fe(CN)5H2O]3-. On standing, substitution of H2O by tu and oxidation by air occurs slowly, and finally all of the original iron is observed as [Fe(CN)5tu]2-.....
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