FENTON REACTION DRIVEN BY IRON LIGANDS

One of the most important sources of reactive oxygen species (ROS) in biological systems is the Fenton reaction. In this, the Fe2+ or Fe3+ reacts with H2O2 to produce ROS as the hydroxyl radical (∙OH), superoxide radical (O2-) and singlet oxygen (¹O2). The main ROS, responsible for the hig...

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Autores principales: SALGADO,PABLO, MELIN,VICTORIA, CONTRERAS,DAVID, MORENO,YANKO, MANSILLA,HECTOR D
Lenguaje:English
Publicado: Sociedad Chilena de Química 2013
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ROS
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400043
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spelling oai:scielo:S0717-970720130004000432014-09-02FENTON REACTION DRIVEN BY IRON LIGANDSSALGADO,PABLOMELIN,VICTORIACONTRERAS,DAVIDMORENO,YANKOMANSILLA,HECTOR D Fenton reaction iron ligands ROS One of the most important sources of reactive oxygen species (ROS) in biological systems is the Fenton reaction. In this, the Fe2+ or Fe3+ reacts with H2O2 to produce ROS as the hydroxyl radical (∙OH), superoxide radical (O2-) and singlet oxygen (¹O2). The main ROS, responsible for the high oxidizing power of the Fenton reaction, is not clear. Some authors claim that the principal reactive species is ∙OH, while others propose a ferryl specie (Fe4+ or [FeO]2+)(1,2). Recently, have been proposed that the kind of reaction species produced depends mainly of pH and the iron composition of the coordination sphere. This is highlighted for Fe³+, because in mono and (some) bis-complexes Fe3+ is reduced to Fe2+ and there are some positions occupied by water or hydroxide ligands, readily to be exchanged by H2O2. On the other hand, in tris-complexes there are not any positions occupied by water or hydroxide, avoiding the formation of peroxo-complexes, necessary for Fenton or Fenton like reaction. The 1,2-dihydroxybenzenes (DHBs) have been described as modulators of Fenton reaction. The DHBs driven Fenton reaction have been used for environmental applications as an advanced oxidation process. Furthermore, these systems participate in different biological process, as the wood biodegradation by fungi and oxidative stress in neurodegenerative diseases. In this review, the effect of 1,2-dihydroxybenzenes on the activated species production by the Fenton and Fenton like reaction will be discussed and its participation in different systems.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400043en10.4067/S0717-97072013000400043
institution Scielo Chile
collection Scielo Chile
language English
topic Fenton reaction
iron ligands
ROS
spellingShingle Fenton reaction
iron ligands
ROS
SALGADO,PABLO
MELIN,VICTORIA
CONTRERAS,DAVID
MORENO,YANKO
MANSILLA,HECTOR D
FENTON REACTION DRIVEN BY IRON LIGANDS
description One of the most important sources of reactive oxygen species (ROS) in biological systems is the Fenton reaction. In this, the Fe2+ or Fe3+ reacts with H2O2 to produce ROS as the hydroxyl radical (∙OH), superoxide radical (O2-) and singlet oxygen (¹O2). The main ROS, responsible for the high oxidizing power of the Fenton reaction, is not clear. Some authors claim that the principal reactive species is ∙OH, while others propose a ferryl specie (Fe4+ or [FeO]2+)(1,2). Recently, have been proposed that the kind of reaction species produced depends mainly of pH and the iron composition of the coordination sphere. This is highlighted for Fe³+, because in mono and (some) bis-complexes Fe3+ is reduced to Fe2+ and there are some positions occupied by water or hydroxide ligands, readily to be exchanged by H2O2. On the other hand, in tris-complexes there are not any positions occupied by water or hydroxide, avoiding the formation of peroxo-complexes, necessary for Fenton or Fenton like reaction. The 1,2-dihydroxybenzenes (DHBs) have been described as modulators of Fenton reaction. The DHBs driven Fenton reaction have been used for environmental applications as an advanced oxidation process. Furthermore, these systems participate in different biological process, as the wood biodegradation by fungi and oxidative stress in neurodegenerative diseases. In this review, the effect of 1,2-dihydroxybenzenes on the activated species production by the Fenton and Fenton like reaction will be discussed and its participation in different systems.
author SALGADO,PABLO
MELIN,VICTORIA
CONTRERAS,DAVID
MORENO,YANKO
MANSILLA,HECTOR D
author_facet SALGADO,PABLO
MELIN,VICTORIA
CONTRERAS,DAVID
MORENO,YANKO
MANSILLA,HECTOR D
author_sort SALGADO,PABLO
title FENTON REACTION DRIVEN BY IRON LIGANDS
title_short FENTON REACTION DRIVEN BY IRON LIGANDS
title_full FENTON REACTION DRIVEN BY IRON LIGANDS
title_fullStr FENTON REACTION DRIVEN BY IRON LIGANDS
title_full_unstemmed FENTON REACTION DRIVEN BY IRON LIGANDS
title_sort fenton reaction driven by iron ligands
publisher Sociedad Chilena de Química
publishDate 2013
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400043
work_keys_str_mv AT salgadopablo fentonreactiondrivenbyironligands
AT melinvictoria fentonreactiondrivenbyironligands
AT contrerasdavid fentonreactiondrivenbyironligands
AT morenoyanko fentonreactiondrivenbyironligands
AT mansillahectord fentonreactiondrivenbyironligands
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