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Chen CY, Lu JW, Wei HH. Crystal Structures, Magnetic Properties and Catecholase-Like Activities of μ-Alkoxo-μ-Carboxylato Double Bridged Dinuclear and Tetranuclear Copper(II) Complexes. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Allen SE, Walvoord RR, Padilla-Salinas R, Kozlowski MC. Aerobic copper-catalyzed organic reactions. Chem Rev 2013; 113:6234-458. [PMID: 23786461 PMCID: PMC3818381 DOI: 10.1021/cr300527g] [Citation(s) in RCA: 1228] [Impact Index Per Article: 111.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Scott E. Allen
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ryan R. Walvoord
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Rosaura Padilla-Salinas
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Komorsky-Lovrić Š, Lovrić M. Theory of square-wave voltammetry of two electron reduction with the intermediate that is stabilized by complexation. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.02.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Osório REHMB, Peralta RA, Bortoluzzi AJ, de Almeida VR, Szpoganicz B, Fischer FL, Terenzi H, Mangrich AS, Mantovani KM, Ferreira DEC, Rocha WR, Haase W, Tomkowicz Z, Anjos AD, Neves A. Synthesis, Magnetostructural Correlation, and Catalytic Promiscuity of Unsymmetric Dinuclear Copper(II) Complexes: Models for Catechol Oxidases and Hydrolases. Inorg Chem 2012; 51:1569-89. [DOI: 10.1021/ic201876k] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Antonio S. Mangrich
- Departamento de
Química, Universidade Federal do Paraná, 81531-970 Curitiba, Paraná, Brazil
| | - Karen Mary Mantovani
- Departamento de
Química, Universidade Federal do Paraná, 81531-970 Curitiba, Paraná, Brazil
| | - Dalva E. C. Ferreira
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Campus Universitário
Pampulha, 31270-901 Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - Willian R. Rocha
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Campus Universitário
Pampulha, 31270-901 Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - Wolfgang Haase
- Institut für Physikalishe
Chemie, Technische Universität Darmstadt, Petersenstraße 20, D-64287-Darmstadt, Germany
| | - Zbigniew Tomkowicz
- Institut für Physikalishe
Chemie, Technische Universität Darmstadt, Petersenstraße 20, D-64287-Darmstadt, Germany
- Institute of Physics, Reymonta
4, Jagiellonian University, PL-30-059 Krakow,
Poland
| | - Ademir dos Anjos
- Universidade Estadual de Mato Grosso do Sul, 79950-000 Unidade Universitária
de Naviraí, Mato Grosso do Sul, Brazil
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Sumby CJ. Bridging ligands comprising two or more di-2-pyridylmethyl or amine arms: Alternatives to 2,2′-bipyridyl-containing bridging ligands. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.03.015] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Peralta RA, Bortoluzzi AJ, Szpoganicz B, Brandão TAS, Castellano EE, de Oliveira MB, Severino PC, Terenzi H, Neves A. Catecholase and DNase activities of copper(II) complexes containing phenolate-type ligands. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1779] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Functional model for catecholase-like activity: Synthesis, structure, spectra, and catalytic activity of iron(III) complexes with substituted-salicylaldimine ligands. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.06.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis and structure of copper (II) complexes with L–OH (L–OH=2,6-bis-[N-(2-pyridylethyl)-formidoyl]-4-methyl-phenol). Polyhedron 2007. [DOI: 10.1016/j.poly.2006.07.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Peralta RA, Neves A, Bortoluzzi AJ, Dos Anjos A, Xavier FR, Szpoganicz B, Terenzi H, de Oliveira MCB, Castellano E, Friedermann GR, Mangrich AS, Novak MA. New unsymmetric dinuclear CuIICuII complexes and their relevance to copper(II) containing metalloenzymes and DNA cleavage. J Inorg Biochem 2006; 100:992-1004. [PMID: 16563512 DOI: 10.1016/j.jinorgbio.2006.01.041] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2005] [Revised: 01/18/2006] [Accepted: 01/24/2006] [Indexed: 11/17/2022]
Abstract
The new homodinuclear complexes, [Cu(2)(II)(HLdtb)(mu-OCH(3))](ClO(4))(2) (1) and [Cu(2)(II)(Ldtb)(mu-OCH(3))](BPh(4)) (2), with the unsymmetrical N(5)O(2) donor ligand (H(2)Ldtb) - {2-[N,N-Bis(2-pyridylmethyl)aminomethyl]-6-[N',N'-(3,5-di-tert-butylbenzyl-2-hydroxy)(2-pyridylmethyl)]aminomethyl}-4-methylphenol have been synthesized and characterized in the solid state by X-ray crystallography. In both cases the structure reveals that the complexes have a common {Cu(II)(mu-phenoxo)(mu-OCH(3))Cu(II)} structural unit. Magnetic susceptibility studies of 1 and 2 reveal J values of -38.3 cm(-1) and -2.02 cm(-1), respectively, and that the degree of antiferromagnetic coupling is strongly dependent on the coordination geometries of the copper centers within the dinuclear {Cu(II)(mu-OCH(3))(mu-phenolate)Cu(II)} structural unit. Solution studies in dichloromethane, using UV-Visible spectroscopy and electrochemistry, indicate that under these experimental conditions the first coordination spheres of the Cu(II) centers are maintained as observed in the solid state structures, and that both forms can be brought into equilibrium ([Cu(2)(HLdtb)(mu-OCH(3))](2+)=[Cu(2)(Ldtb)(mu-OCH(3))](+)+H(+)) by adjusting the pH with Et(3)N (Ldtb(2-) is the deprotonated form of the ligand). On the other hand, potentiometric titration studies of 1 in an ethanol/water mixture (70:30 V/V; I=0.1M KCl) show three titrable protons, indicating the dissociation of the bridging CH(3)O(-) group.The catecholase activity of 1 and 2 in methanol/water buffer (30:1 V/V) demonstrates that the deprotonated form is the active species in the oxidation of 3,5-di-tert-butylcatechol and that the reaction follows Michaelis-Menten behavior with k(cat)=5.33 x 10(-3)s(-1) and K(M)=3.96 x 10(-3)M. Interestingly, 2 can be electrochemically oxidized with E(1/2)=0.27 V vs.Fc(+)/Fc (Fc(+)/Fc is the redox pair ferrocinium/ferrocene), a redox potential which is believed to be related to the formation of a phenoxyl radical. Since these complexes are redox active species, we analyzed their activity toward the nucleic acid DNA, a macromolecule prone to oxidative damage. Interestingly these complexes promoted DNA cleavage following an oxygen dependent pathway.
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Affiliation(s)
- Rosely A Peralta
- Departamento de Química - LABINC - Universidade Federal de Santa Catarina, Campus Universitário - Trindade, 88040-900 Florianópolis, SC, Brazil
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Weng CH, Cheng SC, Wei HM, Wei HH, Lee CJ. Magnetostructural correlations and catecholase-like activities of μ-alkoxo-μ-carboxylato double bridged dinuclear and tetranuclear copper(II) complexes. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.12.047] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Plieger PG, Downard AJ, Moubaraki B, Murray KS, Brooker S. Dimetallic complexes of acyclic pyridine-armed ligands derived from 3,6-diformylpyridazine. Dalton Trans 2004:2157-65. [PMID: 15249952 DOI: 10.1039/b403131h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bis(pyridine-armed) acyclic Schiff base ligand L1 has been synthesised from 3,6-diformylpyridazine and two equivalents of 2-(2-aminoethyl)pyridine. Reduction of this ligand using NaBH(4) resulted in the formation of the amine analogue L2. Complexes of the form [M(2)L1(mu-X)]Y(2)ClO(4)[where: M = Cu(II), X = OH(-) and Y = ClO(4)(-) 1, Cl(-) 2, Br(-) 3 or I(-) 4; M = Co(II), X = OH(-) and Y = ClO(4)(-) 5; M = Ni(II), X = SCN(-) 6 or X = N(3)(-) 7 and Y = ClO(4)(-)], and [Cu(2)L2(mu-OH)](ClO(4))(3) 8 were prepared and characterised. The complexes 1 and 5-7 have been characterised by single-crystal X-ray diffraction. The acyclic L1 ligand provides three nitrogen donor atoms per metal centre, including a pyridazine bridge between the metal centres, and the anion X also bridges the two metal centres. As required, coordinating solvent molecules or additional anions make up the remainder of the coordination sphere. The two copper centres of 1 are very strongly antiferromagnetically coupled (2J=-1146 cm(-1))via the pyridazine and hydroxide ion bridges, whereas the competing antiferromagnetic pyridazine bridging pathway and ferromagnetic 1,1-bridging azide pathway resulted in the observation of weak antiferromagnetic exchange in the dinickel(II) complex 7 (2J=-14 cm(-1)). Electrochemical examination of L1, L2 and complexes 1 and 5-8 revealed multiple redox processes. These have been tentatively assigned to a mixture of metal centred and ligand centred redox processes on the basis of cyclic voltammetry and coulometry results and comparisons with literature examples.
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Affiliation(s)
- Paul G Plieger
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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FÁBIÁN ISTVÁN, CSORDÁS VIKTOR. METAL ION CATALYZED AUTOXIDATION REACTIONS: KINETICS AND MECHANISMS. ADVANCES IN INORGANIC CHEMISTRY 2003. [DOI: 10.1016/s0898-8838(03)54008-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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