Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/10341 https://doi.org/10.1021/jf025957v |
Resumo: | Electrochemical oxidation of propanil in deuterated solutions was studied by cyclic, differential pulse, and square wave voltammetry using a glassy carbon microelectrode. The oxidation of propanil in deuterated acid solutions occurs at the nitrogen atom of the amide at a potential of +1.15 V vs Ag/AgCl. It was also found that, under the experimental conditions used, protonation at the oxygen atom of propanil occurs, leading to the appearance of another species in solution which oxidizes at +0.60 V. The anodic peak found at +0.79 V vs Ag/AgCl in deuterated basic solutions is related to the presence of an anionic species in which a negative charge is on the nitrogen atom. The electrochemical data were confirmed by the identification of all the species formed in acidic and basic deuterated solutions by means of NMR spectroscopy. The results are supported by electrochemical and spectroscopic studies of acetanilide in deuterated solutions. |
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Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide PropanilHerbicidesPropanilAcetanilideDeuterated solutionsOxidation mechanismElectrochemistrySpectroscopyNuclear magnetic resonanceElectrochemical oxidation of propanil in deuterated solutions was studied by cyclic, differential pulse, and square wave voltammetry using a glassy carbon microelectrode. The oxidation of propanil in deuterated acid solutions occurs at the nitrogen atom of the amide at a potential of +1.15 V vs Ag/AgCl. It was also found that, under the experimental conditions used, protonation at the oxygen atom of propanil occurs, leading to the appearance of another species in solution which oxidizes at +0.60 V. The anodic peak found at +0.79 V vs Ag/AgCl in deuterated basic solutions is related to the presence of an anionic species in which a negative charge is on the nitrogen atom. The electrochemical data were confirmed by the identification of all the species formed in acidic and basic deuterated solutions by means of NMR spectroscopy. The results are supported by electrochemical and spectroscopic studies of acetanilide in deuterated solutions.American Chemical Society2003-02-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/10341http://hdl.handle.net/10316/10341https://doi.org/10.1021/jf025957vengJournal of Agricultural and Food Chemistry. 51:4 (2003) 876-8790021-8561Garrido, E. M.Lima, J. L. F. C.Delerue-Matos, C.Borges, F.Silva, A. M. S.Piedade, J. A. P.Brett, A. M. Oliveirainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-05-29T10:04:39Zoai:estudogeral.uc.pt:10316/10341Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:13.010466Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
title |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
spellingShingle |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil Garrido, E. M. Herbicides Propanil Acetanilide Deuterated solutions Oxidation mechanism Electrochemistry Spectroscopy Nuclear magnetic resonance |
title_short |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
title_full |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
title_fullStr |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
title_full_unstemmed |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
title_sort |
Electrochemical and Spectroscopic Studies of the Oxidation Mechanism of the Herbicide Propanil |
author |
Garrido, E. M. |
author_facet |
Garrido, E. M. Lima, J. L. F. C. Delerue-Matos, C. Borges, F. Silva, A. M. S. Piedade, J. A. P. Brett, A. M. Oliveira |
author_role |
author |
author2 |
Lima, J. L. F. C. Delerue-Matos, C. Borges, F. Silva, A. M. S. Piedade, J. A. P. Brett, A. M. Oliveira |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Garrido, E. M. Lima, J. L. F. C. Delerue-Matos, C. Borges, F. Silva, A. M. S. Piedade, J. A. P. Brett, A. M. Oliveira |
dc.subject.por.fl_str_mv |
Herbicides Propanil Acetanilide Deuterated solutions Oxidation mechanism Electrochemistry Spectroscopy Nuclear magnetic resonance |
topic |
Herbicides Propanil Acetanilide Deuterated solutions Oxidation mechanism Electrochemistry Spectroscopy Nuclear magnetic resonance |
description |
Electrochemical oxidation of propanil in deuterated solutions was studied by cyclic, differential pulse, and square wave voltammetry using a glassy carbon microelectrode. The oxidation of propanil in deuterated acid solutions occurs at the nitrogen atom of the amide at a potential of +1.15 V vs Ag/AgCl. It was also found that, under the experimental conditions used, protonation at the oxygen atom of propanil occurs, leading to the appearance of another species in solution which oxidizes at +0.60 V. The anodic peak found at +0.79 V vs Ag/AgCl in deuterated basic solutions is related to the presence of an anionic species in which a negative charge is on the nitrogen atom. The electrochemical data were confirmed by the identification of all the species formed in acidic and basic deuterated solutions by means of NMR spectroscopy. The results are supported by electrochemical and spectroscopic studies of acetanilide in deuterated solutions. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-02-12 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/10341 http://hdl.handle.net/10316/10341 https://doi.org/10.1021/jf025957v |
url |
http://hdl.handle.net/10316/10341 https://doi.org/10.1021/jf025957v |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Agricultural and Food Chemistry. 51:4 (2003) 876-879 0021-8561 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133904724033536 |