Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes

This manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions...

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Detalhes bibliográficos
Autores: Mártire, Daniel Osvaldo, González, Mónica Cristina
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2001
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/159130
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/159130
Access Level:acceso abierto
Palavra-chave:Química
phosphate radicals
flash-photolysis
mono-substituted benzenes
tripolyphosphate
pyrophosphate
peroxodiphosphate
phosphate
hydroxyciclohexadienyl radicals
phenoxyl radicals
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spelling Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenesMártire, Daniel OsvaldoGonzález, Mónica CristinaQuímicaphosphate radicalsflash-photolysismono-substituted benzenestripolyphosphatepyrophosphateperoxodiphosphatephosphatehydroxyciclohexadienyl radicalsphenoxyl radicalsThis manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions of SO₄ •⁻ radicals with P₂O₇ ⁴⁻ and P₃O₁₀ ⁵⁻ are also discussed. The logarithm of the bimolecular rate constants for the reactions of the three phosphate radicals (H₂PO₄ •, H₂PO₄ •⁻, PO4 •²⁻) with substituted benzenes are discussed in terms of Hammett correlations and a reaction mechanism is proposed. Phenoxyl type radical formation from the reactions of H₂PO₄ • and HPO₄ •⁻ radicals with phenol, chlorobenzene, and a, a, a-trifluorotoluene (TFT) supports the contribution of an addition pathway yielding a phosphate adduct with the substituted benzene. Additional information on the absorption spectra and decay kinetics of the hydroxycyclohexadienyl radicals of chlorobenzene and TFT is also given.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf201-218http://sedici.unlp.edu.ar/handle/10915/159130enginfo:eu-repo/semantics/altIdentifier/issn/1468-6783info:eu-repo/semantics/altIdentifier/doi/10.3184/00796740110316info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:20:24Zoai:sedici.unlp.edu.ar:10915/159130Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:20:25.107SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
title Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
spellingShingle Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
Mártire, Daniel Osvaldo
Química
phosphate radicals
flash-photolysis
mono-substituted benzenes
tripolyphosphate
pyrophosphate
peroxodiphosphate
phosphate
hydroxyciclohexadienyl radicals
phenoxyl radicals
title_short Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
title_full Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
title_fullStr Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
title_full_unstemmed Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
title_sort Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
dc.creator.none.fl_str_mv Mártire, Daniel Osvaldo
González, Mónica Cristina
author Mártire, Daniel Osvaldo
author_facet Mártire, Daniel Osvaldo
González, Mónica Cristina
author_role author
author2 González, Mónica Cristina
author2_role author
dc.subject.none.fl_str_mv Química
phosphate radicals
flash-photolysis
mono-substituted benzenes
tripolyphosphate
pyrophosphate
peroxodiphosphate
phosphate
hydroxyciclohexadienyl radicals
phenoxyl radicals
topic Química
phosphate radicals
flash-photolysis
mono-substituted benzenes
tripolyphosphate
pyrophosphate
peroxodiphosphate
phosphate
hydroxyciclohexadienyl radicals
phenoxyl radicals
description This manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions of SO₄ •⁻ radicals with P₂O₇ ⁴⁻ and P₃O₁₀ ⁵⁻ are also discussed. The logarithm of the bimolecular rate constants for the reactions of the three phosphate radicals (H₂PO₄ •, H₂PO₄ •⁻, PO4 •²⁻) with substituted benzenes are discussed in terms of Hammett correlations and a reaction mechanism is proposed. Phenoxyl type radical formation from the reactions of H₂PO₄ • and HPO₄ •⁻ radicals with phenol, chlorobenzene, and a, a, a-trifluorotoluene (TFT) supports the contribution of an addition pathway yielding a phosphate adduct with the substituted benzene. Additional information on the absorption spectra and decay kinetics of the hydroxycyclohexadienyl radicals of chlorobenzene and TFT is also given.
publishDate 2001
dc.date.none.fl_str_mv 2001
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/159130
url http://sedici.unlp.edu.ar/handle/10915/159130
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1468-6783
info:eu-repo/semantics/altIdentifier/doi/10.3184/00796740110316
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
201-218
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 15,811543

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