Source:http://linkedlifedata.com/resource/pubmed/id/20039719
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
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| pubmed:dateCreated |
2010-1-28
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| pubmed:abstractText |
The mechanism of oxidation of ArSO(2)(-) (PhSO(2)(-) and 5-sulfinato-2-nitrobenzoic acid = TNBO(2)(1-/2-)) with HOCl/OCl(-) has been investigated using the kinetic method. In contrast to previous reports for PhSO(2)(-) (for which it was suggested that OCl(-) and not HOCl was the reactant), the reaction proceeds through a conventional pathway: nucleophilic attack by ArSO(2)(-) on HOCl with concomitant Cl(+) transfer to give a sulfonyl chloride intermediate (ArSO(2)Cl), which we have identified spectrophotometrically. Remarkably, the rate constant for the reaction of HOCl with ArSO(2)(-) is on the order of 10(9) M(-1) s(-1), larger than the rate constants for corresponding thiolates, and is nearly diffusion-controlled. In contrast, the rate constant for the reaction of OCl(-) with ArSO(2)(-) is approximately 7 orders of magnitude smaller.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Feb
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| pubmed:issn |
1520-5215
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
4
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| pubmed:volume |
114
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
1670-6
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| pubmed:year |
2010
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| pubmed:articleTitle |
Reactive sulfur species: kinetics and mechanism of the oxidation of aryl sulfinates with hypochlorous acid.
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| pubmed:affiliation |
Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, USA.
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| pubmed:publicationType |
Journal Article
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