Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts

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 =...

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Detalles Bibliográficos
Publicado:	2011
Materias:	Antioxidant activity Schiff base ligands Water soluble Fe complexes
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1551-701_v2011_n7_p327_Daier http://hdl.handle.net/20.500.12110/paper_1551-701_v2011_n7_p327_Daier
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1551-701_v2011_n7_p327_Daier
record_format	dspace
spelling	paper:paper_1551-701_v2011_n7_p327_Daier2023-06-08T16:23:02Z Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts Antioxidant activity Schiff base ligands Water soluble Fe complexes 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. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1551-701_v2011_n7_p327_Daier http://hdl.handle.net/20.500.12110/paper_1551-701_v2011_n7_p327_Daier
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Antioxidant activity Schiff base ligands Water soluble Fe complexes
spellingShingle	Antioxidant activity Schiff base ligands Water soluble Fe complexes Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
topic_facet	Antioxidant activity Schiff base ligands Water soluble Fe complexes
description	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.
title	Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
title_short	Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
title_full	Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
title_fullStr	Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
title_full_unstemmed	Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts
title_sort	properties and antioxidant activity of water-soluble iron catalysts with schiff base ligands. comparison with their manganese counterparts
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1551-701_v2011_n7_p327_Daier http://hdl.handle.net/20.500.12110/paper_1551-701_v2011_n7_p327_Daier
_version_	1768545434826964992

Properties and antioxidant activity of water-soluble iron catalysts with Schiff base ligands. Comparison with their manganese counterparts

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