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Abstract:

Three new iron complexes Na 2 [Fe(5-SO 3 -salpn)(H 2 O) 2 ]OH•4H 2 O (1•4H 2 O), Na 2 [Fe(5-SO 3 -salpnOH)(H 2 O) 2 ]Cl•7H 2 O (2•7H 2 O) and Na 2 [Fe 2 (5-SO 3 -salpentO)(μ-OAc)(μ-(OH)(H 2 O) 2 ]OH•3H 2 O (3•3H 2 O), where 5-SO 3 -salpn = 1,3-bis(5-SO 3 -salicylidenamino)propane, 5-SO 3 -salpnOH = 1,3-bis(5-SO 3 -salicylidenamino)propan-2-ol and 5-SO 3 -sapentOH = 1,5-bis(5-SO 3 -salicylidenamino) pentan-3-ol, have been obtained and characterized. The ligands tune the redox potential of 1 and 2 within the range required for superoxide dismutase activity, with 2 being less reactive as a result of the formation of an inactive dimer. Complex 3 looses acetate and converts into a μ-oxo-Fe2 species responsible for its catalase activity. The more negative reduction potentials of 1 - 3 and their lower stability result in rates of superoxide and peroxide disproportionation 10- to 100-times slower than those of the Mn counterparts. © ARKAT-USA, Inc.

Registro:

Documento: Artículo
Título:Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
Autor:Daier, V.A.; Palopoli, C.M.; Hureau, C.; De Candia, A.; Signorella, S.R.
Filiación:Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, IQUIR (Instituto de Química Rosario), CONICET, Suipacha 531, S2002LRK Rosario, Argentina
CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse, France
Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EHA, Argentina
Palabras clave:Antioxidant activity; Schiff base ligands; Water soluble Fe complexes
Año:2011
Volumen:2011
Número:7
Página de inicio:327
Página de fin:342
DOI: http://dx.doi.org/10.3998/ark.5550190.0012.727
Título revista:Arkivoc
Título revista abreviado:Arkivoc
ISSN:1551-701
CODEN:AGFUA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1551-701_v2011_n7_p327_Daier

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Citas:

---------- APA ----------
Daier, V.A., Palopoli, C.M., Hureau, C., De Candia, A. & Signorella, S.R. (2011) . Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts. Arkivoc, 2011(7), 327-342.
http://dx.doi.org/10.3998/ark.5550190.0012.727
---------- CHICAGO ----------
Daier, V.A., Palopoli, C.M., Hureau, C., De Candia, A., Signorella, S.R. "Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts" . Arkivoc 2011, no. 7 (2011) : 327-342.
http://dx.doi.org/10.3998/ark.5550190.0012.727
---------- MLA ----------
Daier, V.A., Palopoli, C.M., Hureau, C., De Candia, A., Signorella, S.R. "Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts" . Arkivoc, vol. 2011, no. 7, 2011, pp. 327-342.
http://dx.doi.org/10.3998/ark.5550190.0012.727
---------- VANCOUVER ----------
Daier, V.A., Palopoli, C.M., Hureau, C., De Candia, A., Signorella, S.R. Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts. Arkivoc. 2011;2011(7):327-342.
http://dx.doi.org/10.3998/ark.5550190.0012.727