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dc.contributor.author
Daier, Veronica Andrea
dc.contributor.author
Rivière, Eric
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Mallet Ladeira, Sonia
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Moreno, Diego Martin
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Hureau, C
dc.contributor.author
Signorella, Sandra Rosanna
dc.date.available
2018-07-19T20:50:16Z
dc.date.issued
2016-10
dc.identifier.citation
Daier, Veronica Andrea; Rivière, Eric; Mallet Ladeira, Sonia; Moreno, Diego Martin; Hureau, C; et al.; Synthesis, characterization and activity of imidazolate-bridged and Schiff-base dinuclear complexes as models of Cu,Zn-SOD. A comparative study; Elsevier Science Inc; Journal of Inorganic Biochemistry; 163; 10-2016; 162-175
dc.identifier.issn
0162-0134
dc.identifier.uri
http://hdl.handle.net/11336/52716
dc.description.abstract
Two imidazolate-bridged diCuII and CuIIZnII complexes, [CuZn(dien)2(μ-Im)](ClO4)3·MeOH (1) and [Cu2(dien)2(μ-Im)](ClO4)3 (2) (Im = imidazole, dien = diethylenetriamine), and two complexes formed with Schiff base ligands, [CuZn(salpn)Cl2] (3) and [Cu2(salbutO)ClO4] (4) (H2salpn = 1,3-bis(salicylidenamino)propane, H3salbutO = 1,4-bis(salicylidenamino)butan-2-ol) have been prepared and characterized. The reaction of [Cu(dien)(ImH)](ClO4)2 with [Zn(dien)(H2O)](ClO4)2 at pH ≥ 11 yields complex 1; at lower pH, the Cu3Zn tetranuclear complex [{(dien)Cu(μ-Im)}3Zn(OH2)(ClO4)2](ClO4)3 (1a) forms as the main reaction product. X-ray diffraction of 1a reveals that the complex contains a metal centered windmill-shaped cation having three blades with a central Zn ion and three peripheral capping Cu(dien) moieties bound to the central Zn ion through three imidazolate bridges. The four complexes are able to disproportionate O2− in aqueous medium at pH 7.8, with relative rates 4 > 1 > 2 ≫ 3. [Cu2(salbutO)]+ (4) is the most easily reducible of the four complexes and exhibits the highest activity among the SOD models reported so far; a fact related to the ligand flexibility to accommodate the copper ion in both CuI and CuII oxidation states and the lability of the fourth coordination position of copper facilitating stereochemical rearrangements.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cu/Zn Complexes
dc.subject
Sod Activity
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Stability
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Structure
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Synthesis, characterization and activity of imidazolate-bridged and Schiff-base dinuclear complexes as models of Cu,Zn-SOD. A comparative study
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-07-18T20:49:38Z
dc.journal.volume
163
dc.journal.pagination
162-175
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Daier, Veronica Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Química Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario; Argentina
dc.description.fil
Fil: Rivière, Eric. Université Paris Sud; Francia. Centre National de la Recherche Scientifique; Francia. Universite de Paris XI. Institut de Chimie Moléculaire et des Matériaux d'Orsay; Francia
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Fil: Mallet Ladeira, Sonia. Université Paul Sabatier; Francia
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Fil: Moreno, Diego Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Química Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario; Argentina
dc.description.fil
Fil: Hureau, C. Université Paul Sabatier; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Signorella, Sandra Rosanna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Química Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario; Argentina
dc.journal.title
Journal of Inorganic Biochemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jinorgbio.2016.07.008
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016201341630201X
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