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Pantalon Juraj N, Tandarić T, Tadić V, Perić B, Moreth D, Schatzschneider U, Brozovic A, Vianello R, Kirin SI. Tuning the coordination properties of chiral pseudopeptide bis(2-picolyl)amine and iminodiacetamide ligands in Zn( ii) and Cu( ii) complexes. Dalton Trans 2022; 51:17008-17021. [DOI: 10.1039/d2dt02895f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modifications of the chiral side chains of bpa and imda ligands lead to different metal ion coordination and hydrogen bonding ability.
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Affiliation(s)
| | | | | | | | - Dominik Moreth
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Ulrich Schatzschneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Márcio E. Berezuk, Samulewski RB, Carvalho NMF, Paesano A, Arroyo PA, Cardozo-Filho L. Mononuclear Iron(III) Piperazine-Derived Complexes and Application in the Oxidation of Cyclohexane. CATALYSIS IN INDUSTRY 2021. [DOI: 10.1134/s2070050421040036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Sundaram GA, Vaithinathan K, Anbalagan K. New monomeric mixed-ligand complex of iron(III)-3-chloropyridine: Synthesis, structure, luminescence, electrochemical and magnetic properties. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Carvalho SS, Rodrigues ACC, Lima JF, Carvalho NM. Photocatalytic degradation of dyes by mononuclear copper(II) complexes from bis-(2-pyridylmethyl)amine NNN-derivative ligands. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119924] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Synthesis, single crystal X-ray, spectroscopic characterization and biological activities of Mn2+, Co2+, Ni2+ and Fe3+ complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127240] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Carvalho SS, Carvalho NM. Degradation of organic dyes by water soluble iron(III) mononuclear complexes from bis-(2-pyridylmethyl)amine NNN-derivative ligands. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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López I, Cao R, Quist DA, Karlin KD, Le Poul N. Direct Determination of Electron-Transfer Properties of Dicopper-Bound Reduced Dioxygen Species by a Cryo-Spectroelectrochemical Approach. Chemistry 2017; 23:18314-18319. [PMID: 29073346 PMCID: PMC5783699 DOI: 10.1002/chem.201705066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Indexed: 01/10/2023]
Abstract
Direct experimental determination of redox properties of superoxo (O2.- ) and peroxo (O22- ) embedded in dicopper complexes bearing an unsymmetrical binucleating ligand was achieved using cryo-electrochemistry and cryo-spectroelectrochemistry in dichloromethane. Cyclic voltammetry for dicopper(I) (1+ ) oxidation to a CuI CuII mixed-valent species (12+ ) under inert atmosphere at 193 K reveals slow heterogeneous electron-transfer kinetics, indicative of a large reorganization energy. Oxygenation of the dicuprous complex 1+ gives the bridged peroxo dicopper(II) species 3+ , which is reversibly oxidized to the superoxo complex 22+ at E0 =0.11 V (vs. SCE) with a small inner sphere electron-transfer reorganization energy, λi =0.54 eV, determined from variable temperature electrochemical impedance spectroscopy. The data suggest that the O2.- /O22- redox process occurs directly on the O2 -derived core.
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Affiliation(s)
- Isidoro López
- UMR CNRS 6521, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, CS 93837, 29238, Brest Cedex 3, France
| | - Rui Cao
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - David A Quist
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - Kenneth D Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - Nicolas Le Poul
- UMR CNRS 6521, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, CS 93837, 29238, Brest Cedex 3, France
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8
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Broering EP, Dillon S, Gale EM, Steiner RA, Telser J, Brunold TC, Harrop TC. Accessing Ni(III)-thiolate versus Ni(II)-thiyl bonding in a family of Ni-N2S2 synthetic models of NiSOD. Inorg Chem 2015; 54:3815-28. [PMID: 25835183 PMCID: PMC4630978 DOI: 10.1021/ic503124f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Superoxide dismutase (SOD) catalyzes the disproportionation of superoxide (O2(• -)) into H2O2 and O2(g) by toggling through different oxidation states of a first-row transition metal ion at its active site. Ni-containing SODs (NiSODs) are a distinct class of this family of metalloenzymes due to the unusual coordination sphere that is comprised of mixed N/S-ligands from peptide-N and cysteine-S donor atoms. A central goal of our research is to understand the factors that govern reactive oxygen species (ROS) stability of the Ni-S(Cys) bond in NiSOD utilizing a synthetic model approach. In light of the reactivity of metal-coordinated thiolates to ROS, several hypotheses have been proffered and include the coordination of His1-Nδ to the Ni(II) and Ni(III) forms of NiSOD, as well as hydrogen bonding or full protonation of a coordinated S(Cys). In this work, we present NiSOD analogues of the general formula [Ni(N2S)(SR')](-), providing a variable location (SR' = aryl thiolate) in the N2S2 basal plane coordination sphere where we have introduced o-amino and/or electron-withdrawing groups to intercept an oxidized Ni species. The synthesis, structure, and properties of the NiSOD model complexes (Et4N)[Ni(nmp)(SPh-o-NH2)] (2), (Et4N)[Ni(nmp)(SPh-o-NH2-p-CF3)] (3), (Et4N)[Ni(nmp)(SPh-p-NH2)] (4), and (Et4N)[Ni(nmp)(SPh-p-CF3)] (5) (nmp(2-) = dianion of N-(2-mercaptoethyl)picolinamide) are reported. NiSOD model complexes with amino groups positioned ortho to the aryl-S in SR' (2 and 3) afford oxidized species (2(ox) and 3(ox)) that are best described as a resonance hybrid between Ni(III)-SR and Ni(II)-(•)SR based on ultraviolet-visible (UV-vis), magnetic circular dichroism (MCD), and electron paramagnetic resonance (EPR) spectroscopies, as well as density functional theory (DFT) calculations. The results presented here, demonstrating the high percentage of S(3p) character in the highest occupied molecular orbital (HOMO) of the four-coordinate reduced form of NiSOD (NiSODred), suggest that the transition from NiSODred to the five-coordinate oxidized form of NiSOD (NiSODox) may go through a four-coordinate Ni-(•)S(Cys) (NiSODox-Hisoff) that is stabilized by coordination to Ni(II).
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Affiliation(s)
- Ellen P. Broering
- Department of Chemistry and Center for Metalloenzyme Studies, The University of Georgia, 1001 Cedar Street, Athens, Georgia 30602, United States
| | - Stephanie Dillon
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Eric M. Gale
- Department of Chemistry and Center for Metalloenzyme Studies, The University of Georgia, 1001 Cedar Street, Athens, Georgia 30602, United States
| | - Ramsey A. Steiner
- Department of Chemistry and Center for Metalloenzyme Studies, The University of Georgia, 1001 Cedar Street, Athens, Georgia 30602, United States
| | - Joshua Telser
- Department of Biological, Chemical and Physical Sciences, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605, United States
| | - Thomas C. Brunold
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Todd C. Harrop
- Department of Chemistry and Center for Metalloenzyme Studies, The University of Georgia, 1001 Cedar Street, Athens, Georgia 30602, United States
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Iron(II) α-Aminopyridine Complexes and Their Catalytic Activity in Oxidation Reactions: A Comparative Study of Activity and Ligand Decomposition. Chempluschem 2012. [DOI: 10.1002/cplu.201200244] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Das P, Sarmah PP, Borah M, Phukan AK. Low-spin, mononuclear, Fe(III) complexes with P,N donor hemilabile ligands: A combined experimental and theoretical study. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Benhamou L, Machkour A, Rotthaus O, Lachkar M, Welter R, Mandon D. Regiospecific Intramolecular O-Demethylation of the Ligand by Action of Molecular Dioxygen on a Ferrous Complex: Versatile Coordination Chemistry of Dioxygen in FeCl2 Complexes with (2,3-Dimethoxyphenyl) α-Substituted Tripods in the tris(2-Pyridylmethyl)amine Series. Inorg Chem 2009; 48:4777-86. [DOI: 10.1021/ic802359z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laila Benhamou
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie, UMR CNRS no. 7177, Université Louis Pasteur, 4 rue Blaise Pascal, B.P. 1032, F-67070 Strasbourg cedex, France
- Laboratoire d’Ingénierie des Matériaux Organométalliques et Moléculaires, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, BP 1796 (Atlas), 30000 Fez, Morocco
| | - Ahmed Machkour
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie, UMR CNRS no. 7177, Université Louis Pasteur, 4 rue Blaise Pascal, B.P. 1032, F-67070 Strasbourg cedex, France
- Laboratoire d’Ingénierie des Matériaux Organométalliques et Moléculaires, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, BP 1796 (Atlas), 30000 Fez, Morocco
| | - Olaf Rotthaus
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie, UMR CNRS no. 7177, Université Louis Pasteur, 4 rue Blaise Pascal, B.P. 1032, F-67070 Strasbourg cedex, France
| | - Mohammed Lachkar
- Laboratoire d’Ingénierie des Matériaux Organométalliques et Moléculaires, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, BP 1796 (Atlas), 30000 Fez, Morocco
| | - Richard Welter
- Laboratoire DECOMET, Institut de Chimie, UMR CNRS no. 7177, Université Louis Pasteur, 4 rue Blaise Pascal, B.P. 1032, F-67070 Strasbourg cedex, France
| | - Dominique Mandon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie, UMR CNRS no. 7177, Université Louis Pasteur, 4 rue Blaise Pascal, B.P. 1032, F-67070 Strasbourg cedex, France
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Fernández TL, Souza ET, Visentin LC, Santos JV, Mangrich AS, Faria RB, Antunes O, Scarpellini M. A new oxo-vanadium complex employing an imidazole-rich tripodal ligand: A bioinspired bromide and hydrocarbon oxidation catalyst. J Inorg Biochem 2009; 103:474-9. [DOI: 10.1016/j.jinorgbio.2009.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 02/03/2009] [Accepted: 02/03/2009] [Indexed: 11/28/2022]
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13
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Roy P, Nandi M, Manassero M, Riccó M, Mazzani M, Bhaumik A, Banerjee P. Four μ4-oxo-bridged copper(ii) complexes: magnetic properties and catalytic applications in liquid phase partial oxidation reactions. Dalton Trans 2009:9543-54. [DOI: 10.1039/b913556a] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Iron(III) complexes of the tris-(3-aminopropyl) derivative of a 14-membered tetraazamacrocycle: Potentiometric, spectroscopic and electrochemical studies. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.04.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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