1
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Jana S, Pattanayak S, Das S, Ghosh M, Velasco L, Moonshiram D, Sen Gupta S. Comparing the reactivity of an oxoiron(IV) cation radical and its oxoiron(V) tautomer towards C-H bonds. Chem Commun (Camb) 2023; 59:2755-2758. [PMID: 36779358 DOI: 10.1039/d2cc07005g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
An oxoiron(IV) cation radical is generated upon two-electron oxidation of an iron(III) complex bearing an electron-rich methoxy substituted bTAML framework and thoroughly characterized via multiple spectroscopic techniques and density functional theory (DFT). Reactivity studies demonstrate faster rates for oxidation of strong aliphatic sp3 C-H bonds than for its corresponding oxoiron(V) valence tautomer.
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Affiliation(s)
- Sandipan Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Santanu Pattanayak
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Soumadip Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Munmun Ghosh
- Department of Chemistry, Ashoka University, Rajiv Gandhi Education City, Sonepat, Haryana 131029, India.
| | - Lucia Velasco
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Sor Juana Inés de la Cruz, 3, 28049, Madrid, Spain.
| | - Dooshaye Moonshiram
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Sor Juana Inés de la Cruz, 3, 28049, Madrid, Spain.
| | - Sayam Sen Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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2
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Mizrahi A, Bhowmik S, Manna AK, Sinha W, Kumar A, Saphier M, Mahammed A, Patra M, Fridman N, Zilbermann I, Kronik L, Gross Z. Electronic Coupling and Electrocatalysis in Redox Active Fused Iron Corroles. Inorg Chem 2022; 61:20725-20733. [PMID: 36512733 PMCID: PMC9799712 DOI: 10.1021/acs.inorgchem.2c01389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Indexed: 12/15/2022]
Abstract
Conjugated arrays composed of corrole macrocycles are increasingly more common, but their chemistry still lags behind that of their porphyrin counterparts. Here, we report on the insertion of iron(III) into a β,β-fused corrole dimer and on the electronic effects that this redox active metal center has on the already rich coordination chemistry of [H3tpfc] COT, where COT = cyclo-octatetraene and tpfc = tris(pentafluorophenyl)corrole. Synthetic manipulations were performed for the isolation and full characterization of both the 5-coordinate [FeIIItpfc(py)]2COT and 6-coordinate [FeIIItpfc(py)2]2COT, with one and two axial pyridine ligands per metal, respectively. X-Ray crystallography reveals a dome-shaped structure for [FeIIItpfc(py)]2COT and a perfectly planar geometry which (surprisingly at first) is also characterized by shorter Fe-N (corrole) and Fe-N (pyridine) distances. Computational investigations clarify that the structural phenomena are due to a change in the iron(III) spin state from intermediate (S = 3/2) to low (S = 1/2), and that both the 5- and 6-coordinated complexes are enthalpically favored. Yet, in contrast to iron(III) porphyrins, the formation enthalpy for the coordination of the first pyridine to Fe(III) corrole is more negative than that of the second pyridine coordination. Possible interactions between the two corrole subunits and the chelated iron ions were examined by UV-Vis spectroscopy, electrochemical techniques, and density functional theory (DFT). The large differences in the electronic spectra of the dimer relative to the monomer are concluded to be due to a reduced electronic gap, owing to the extensive electron delocalization through the fusing bridge. A cathodic sweep for the dimer discloses two redox processes, separated by 230 mV. The DFT self-consistent charge density for the neutral and cationic states (1- and 2-electron oxidized) reveals that the holes are localized on the macrocycle. A different picture emerges from the reduction process, where both the electrochemistry and the calculated charge density point toward two consecutive electron transfers with similar energetics, indicative of very weak electron communication between the two redox active iron(III) sites. The binuclear complex was determined to be a much better catalyst for the electrochemical hydrogen evolution reaction (HER) than the analogous mononuclear corrole.
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Affiliation(s)
- Amir Mizrahi
- Chemistry
Department, Nuclear Research Centre Negev, Beer-Sheva84190, Israel
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
| | - Susovan Bhowmik
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
- Bankura
Sammilani College (W.B), Bankura722102, India
| | - Arun K. Manna
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot76100, Israel
| | - Woormileela Sinha
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
- Department
of Chemistry, BITS PilaniK K Birla Goa Campus, NH17B, Zuarinagar, Goa403726, India
| | - Amit Kumar
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
| | - Magal Saphier
- Chemistry
Department, Nuclear Research Centre Negev, Beer-Sheva84190, Israel
| | - Atif Mahammed
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
| | | | - Natalia Fridman
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
| | - Israel Zilbermann
- Chemistry
Department, Nuclear Research Centre Negev, Beer-Sheva84190, Israel
- Chemistry
Department, Ben-Gurion University of the
Negev, Beer-Sheva84105, Israel
| | - Leeor Kronik
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot76100, Israel
| | - Zeev Gross
- Schulich
Faculty of Chemistry, Technion Institute
of Technology, Haifa3200003, Israel
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3
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Ren W, Schulz CE, Shroyer MH, Xu W, Xi S, An P, Guo W, Li J. Electronic Configurations and the Effect of Peripheral Substituents of (Nitrosyl)iron Corroles. Inorg Chem 2022; 61:20385-20396. [DOI: 10.1021/acs.inorgchem.2c03026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wanjie Ren
- College of Materials Science and Optoelectronic Technology and Chinese Academy of Sciences Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Yanqi Lake, Huairou District, Beijing101408, P. R. China
| | - Charles E. Schulz
- Department of Physics and Astronomy, Knox College, Galesburg, Illinois61401, United States
| | - Mark H. Shroyer
- Department of Physics and Astronomy, Knox College, Galesburg, Illinois61401, United States
| | - Wei Xu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing100049, P. R. China
- RICMASS, Rome International Center for Materials Science Superstripes, Via dei Sabelli 119A, Rome00185, Italy
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 1 Pesek Road, Jurong Island, Singapore627833, Singapore
| | - Pengfei An
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing100049, P. R. China
| | - Wenping Guo
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd., Huairou District, Beijing101400, P. R. China
| | - Jianfeng Li
- College of Materials Science and Optoelectronic Technology and Chinese Academy of Sciences Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Yanqi Lake, Huairou District, Beijing101408, P. R. China
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4
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Schrage BR, Zhou W, Harrison LA, Nevonen DE, Thompson JR, Prosser KE, Walsby CJ, Ziegler CJ, Leznoff DB, Nemykin VN. Resolving a Half-Century-Long Controversy between (Magneto)optical and EPR Spectra of Single-Electron-Reduced [PcFe] −, [PcFeL] −, and [PcFeX] 2– Complexes: Story of a Double Flip. Inorg Chem 2022; 61:20177-20199. [DOI: 10.1021/acs.inorgchem.2c03456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Briana R. Schrage
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996, United States
| | - Wen Zhou
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | - Laurel A. Harrison
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996, United States
| | - Dustin E. Nevonen
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996, United States
| | - John R. Thompson
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | - Kathleen E. Prosser
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | - Charles J. Walsby
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | | | - Daniel B. Leznoff
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | - Victor N. Nemykin
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996, United States
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6
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Vaillard VA, Nieres PD, Vaillard SE, Doctorovich F, Sarkar B, Neuman NI. Cobalt, Iron, and Manganese Metallocorroles in Catalytic Oxidation of Water. An Overview of the Synthesis, Selected Redox and Electronic Properties, and Catalytic Activities. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Victoria A. Vaillard
- Instituto de Desarrollo Tecnológico para la Industria Química INTEC UNL-CONICET Predio CONICET Santa Fe Dr. Alberto Cassano Ruta Nacional N° 168, Km 0 Paraje El Pozo S3000ZAA Santa Fe Argentina
| | - Pablo D. Nieres
- Instituto de Desarrollo Tecnológico para la Industria Química INTEC UNL-CONICET Predio CONICET Santa Fe Dr. Alberto Cassano Ruta Nacional N° 168, Km 0 Paraje El Pozo S3000ZAA Santa Fe Argentina
| | - Santiago E. Vaillard
- Instituto de Desarrollo Tecnológico para la Industria Química INTEC UNL-CONICET Predio CONICET Santa Fe Dr. Alberto Cassano Ruta Nacional N° 168, Km 0 Paraje El Pozo S3000ZAA Santa Fe Argentina
| | - Fabio Doctorovich
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Ciudad Universitaria, Pabellón II Buenos Aires C1428EHA Argentina
| | - Biprajit Sarkar
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Nicolás I. Neuman
- Instituto de Desarrollo Tecnológico para la Industria Química INTEC UNL-CONICET Predio CONICET Santa Fe Dr. Alberto Cassano Ruta Nacional N° 168, Km 0 Paraje El Pozo S3000ZAA Santa Fe Argentina
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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7
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Caulfield KP, Tonzetich ZJ. Alkyl Complexes of Iron(IV) Triphenylcorrole. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenneth P. Caulfield
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Zachary J. Tonzetich
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
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8
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9
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Osterloh WR, Desbois N, Quesneau V, Brandès S, Fleurat-Lessard P, Fang Y, Blondeau-Patissier V, Paolesse R, Gros CP, Kadish KM. Old Dog, New Tricks: Innocent, Five-coordinate Cyanocobalt Corroles. Inorg Chem 2020; 59:8562-8579. [PMID: 32452674 DOI: 10.1021/acs.inorgchem.0c01037] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three mono-CN ligated anionic cobalt A3-triarylcorroles were synthesized and investigated as to their spectroscopic and electrochemical properties in CH2Cl2, pyridine (Py), and dimethyl sulfoxide (DMSO). The newly synthesized corroles provide the first examples of air-stable cobalt corroles with an anionic axial ligand and are represented as [(Ar)3CorCoIII(CN)]-TBA+, where Cor is the trivalent corrole macrocycle, Ar is p-(CN)Ph, p-(CF3)Ph, or p-(OMe)Ph, and TBA+ is the tetra-n-butylammonium (TBA) cation. Multiple redox reactions are observed for each mono-CN derivative with a key feature being a more facile first oxidation and a more difficult first reduction in all three solvents as compared to all previously examined corroles with similar meso- and β-pyrrole substituents. Formation constants (log K) for conversion of the five-coordinate mono-CN complex to its six-coordinate bis-CN form ranged from 102.8 for Ar = p-(OMe)Ph to 104.7 for Ar = p-(CN)Ph in DMSO as determined by spectroscopic methodologies. The in situ generated bis-CN complexes, represented as [(Ar)3CorCoIII(CN)2]2-(TBA+)2, and the mixed ligand complexes, represented as [(Ar)3CorCoIII(CN)(Py)]-TBA+, were also investigated as to their electrochemical and spectroscopic properties. UV-visible spectra and electrode reactions of the synthesized mono-CN derivatives are compared with the neutral mono-DMSO cobalt corrole complexes and the in situ generated bis-CN and bis-Py complexes, and the noninnocent (or innocent) nature of each cobalt corrole system is addressed. The data demonstrate the ability of the CN- axial ligand(s) to stabilize the high-valent forms of the metallocorrole, leading to systems with innocent macrocyclic ligands. Although a number of six-coordinate cobalt(III) corroles with N-donor ligands were characterized in the solid state, a dissociation of one axial ligand readily occurs in nonaqueous solvents, and this behavior contrasts with the high stability of the currently studied bis-CN adducts in CH2Cl2, pyridine, or DMSO. Linear free energy relationships were elucidated between the meso-phenyl Hammett substituent constants (Σσ) and the measured binding constants, the redox potentials, and the energy of the band positions in the mono-CN and bis-CN complexes in their neutral or singly oxidized forms, revealing highly predictable trends in the physicochemical properties of the anionic corroles.
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Affiliation(s)
- W Ryan Osterloh
- Department of Chemistry, University of Houston, Houston 77204-5003, Texas, United States
| | - Nicolas Desbois
- Université Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, Dijon, Cedex 21078, France
| | - Valentin Quesneau
- Université Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, Dijon, Cedex 21078, France
| | - Stéphane Brandès
- Université Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, Dijon, Cedex 21078, France
| | - Paul Fleurat-Lessard
- Université Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, Dijon, Cedex 21078, France
| | - Yuanyuan Fang
- Department of Chemistry, University of Houston, Houston 77204-5003, Texas, United States
| | - Virginie Blondeau-Patissier
- Department Time-Frequency, Université Bourgogne Franche-Comté, Institut FEMTO-ST (UMR CNRS 6174), 26 Chemin de l'épitaphe, Besançon Cedex 25030, France
| | - Roberto Paolesse
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Claude P Gros
- Université Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, Dijon, Cedex 21078, France
| | - Karl M Kadish
- Department of Chemistry, University of Houston, Houston 77204-5003, Texas, United States
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10
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Sinha W, Mahammed A, Fridman N, Gross Z. Water Oxidation Catalysis by Mono- and Binuclear Iron Corroles. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05382] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Woormileela Sinha
- Schulich Faculty of Chemistry and the Nancy and Stephen Grand Technion Energy Program (GTEP), Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Atif Mahammed
- Schulich Faculty of Chemistry and the Nancy and Stephen Grand Technion Energy Program (GTEP), Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry and the Nancy and Stephen Grand Technion Energy Program (GTEP), Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Zeev Gross
- Schulich Faculty of Chemistry and the Nancy and Stephen Grand Technion Energy Program (GTEP), Technion-Israel Institute of Technology, Haifa 32000, Israel
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11
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Mondal S, Naik PK, Adha JK, Kar S. Synthesis, characterization, and reactivities of high valent metal–corrole (M = Cr, Mn, and Fe) complexes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.213043] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Caulfield KP, Conradie J, Arman HD, Ghosh A, Tonzetich ZJ. Iron(II) Corrole Anions. Inorg Chem 2019; 58:15225-15235. [DOI: 10.1021/acs.inorgchem.9b02209] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kenneth P. Caulfield
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Jeanet Conradie
- Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway
- Department of Chemistry, University of the Free State, P.O. Box 339, 9300 Bloemfontein, Republic of South Africa
| | - Hadi D. Arman
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Abhik Ghosh
- Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Zachary J. Tonzetich
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
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13
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Gomes LMF, Mahammed A, Prosser KE, Smith JR, Silverman MA, Walsby CJ, Gross Z, Storr T. A catalytic antioxidant for limiting amyloid-beta peptide aggregation and reactive oxygen species generation. Chem Sci 2019; 10:1634-1643. [PMID: 30842826 PMCID: PMC6369440 DOI: 10.1039/c8sc04660c] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 11/27/2018] [Indexed: 12/29/2022] Open
Abstract
Alzheimer's disease (AD) is a multifaceted disease that is characterized by increased oxidative stress, metal-ion dysregulation, and the formation of intracellular neurofibrillary tangles and extracellular amyloid-β (Aβ) aggregates. In this work we report the large affinity binding of the iron(iii) 2,17-bis-sulfonato-5,10,15-tris(pentafluorophenyl)corrole complex FeL1 to the Aβ peptide (K d ∼ 10-7) and the ability of the bound FeL1 to act as a catalytic antioxidant in both the presence and absence of Cu(ii) ions. Specific findings are that: (a) an Aβ histidine residue binds axially to FeL1; (b) that the resulting adduct is an efficient catalase; (c) this interaction restricts the formation of high molecular weight peptide aggregates. UV-Vis and electron paramagnetic resonance (EPR) studies show that although the binding of FeL1 does not influence the Aβ-Cu(ii) interaction (K d ∼ 10-10), bound FeL1 still acts as an antioxidant thereby significantly limiting reactive oxygen species (ROS) generation from Aβ-Cu. Overall, FeL1 is shown to bind to the Aβ peptide, and modulate peptide aggregation. In addition, FeL1 forms a ternary species with Aβ-Cu(ii) and impedes ROS generation, thus showing the promise of discrete metal complexes to limit the toxicity pathways of the Aβ peptide.
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Affiliation(s)
- Luiza M F Gomes
- Department of Chemistry , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada .
| | - Atif Mahammed
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa , 32000 , Israel .
| | - Kathleen E Prosser
- Department of Chemistry , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada .
| | - Jason R Smith
- Department of Chemistry , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada .
| | - Michael A Silverman
- Department of Biological Sciences , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada
| | - Charles J Walsby
- Department of Chemistry , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada .
| | - Zeev Gross
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa , 32000 , Israel .
| | - Tim Storr
- Department of Chemistry , Simon Fraser University , V5A-1S6 , Burnaby , BC , Canada .
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14
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Jiang X, Naitana ML, Desbois N, Quesneau V, Brandès S, Rousselin Y, Shan W, Osterloh WR, Blondeau-Patissier V, Gros CP, Kadish KM. Electrochemistry of Bis(pyridine)cobalt (Nitrophenyl)corroles in Nonaqueous Media. Inorg Chem 2018; 57:1226-1241. [DOI: 10.1021/acs.inorgchem.7b02655] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoqin Jiang
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Mario L. Naitana
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Nicolas Desbois
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Valentin Quesneau
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Stéphane Brandès
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Yoann Rousselin
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Wenqian Shan
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - W. Ryan Osterloh
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Virginie Blondeau-Patissier
- Department of Time-Frequency, Université de Bourgogne Franche-Comté, Institut FEMTO-ST (UMR CNRS 6174), 26 Chemin de l’épitaphe, 25030 Besançon Cedex, France
| | - Claude P. Gros
- Université de Bourgogne Franche-Comté, ICMUB (UMR CNRS 6302), 9 Avenue Alain Savary, BP 47870, 21078 Dijon, Cedex, France
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
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15
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Jiang X, Pomarico G, Bischetti M, Galloni P, Cicero DO, Cui Y, Kadish KM, Paolesse R. Iron, iron everywhere: synthesis and characterization of iron 5,10,15-triferrocenylcorrole complexes. NEW J CHEM 2018. [DOI: 10.1039/c7nj05076c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of iron triferrocenylcorroles with three different axial ligands, NO, Cl−and σ-Ph, is synthesized and characterized using1H NMR, electrochemical and spectroelectrochemical techniques in nonaqueous media.
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Affiliation(s)
- X. Jiang
- Department of Chemistry, University of Houston
- USA
| | - G. Pomarico
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - M. Bischetti
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - P. Galloni
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - D. O. Cicero
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - Y. Cui
- Department of Chemistry, University of Houston
- USA
| | - K. M. Kadish
- Department of Chemistry, University of Houston
- USA
| | - R. Paolesse
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata
- 00133 Rome
- Italy
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16
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Jiang X, Shan W, Desbois N, Quesneau V, Brandès S, Caemelbecke EV, Osterloh WR, Blondeau-Patissier V, Gros CP, Kadish KM. Mono-DMSO ligated cobalt nitrophenylcorroles: electrochemical and spectral characterization. NEW J CHEM 2018. [DOI: 10.1039/c8nj00300a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four mono-DMSO ligated cobalt corroles with one or threemeso-nitrophenyl substituents on the macrocycle were synthesized and investigated as to their electrochemical and spectroscopic properties in CH2Cl2and DMSO.
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Affiliation(s)
- X. Jiang
- Department of Chemistry
- University of Houston
- Houston
- USA
| | - W. Shan
- Department of Chemistry
- University of Houston
- Houston
- USA
| | - N. Desbois
- Université de Bourgogne Franche-Comté
- ICMUB (UMR CNRS 6302)
- 21078 Dijon
- France
| | - V. Quesneau
- Université de Bourgogne Franche-Comté
- ICMUB (UMR CNRS 6302)
- 21078 Dijon
- France
| | - S. Brandès
- Université de Bourgogne Franche-Comté
- ICMUB (UMR CNRS 6302)
- 21078 Dijon
- France
| | - E. Van Caemelbecke
- Department of Chemistry
- University of Houston
- Houston
- USA
- Department of Chemistry
| | | | - V. Blondeau-Patissier
- Department Time-Frequency
- Université de Bourgogne Franche-Comté
- Institut FEMTO-ST (UMR CNRS 6174)
- 25030 Besançon
- France
| | - C. P. Gros
- Université de Bourgogne Franche-Comté
- ICMUB (UMR CNRS 6302)
- 21078 Dijon
- France
| | - K. M. Kadish
- Department of Chemistry
- University of Houston
- Houston
- USA
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17
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Tanaka T, Ooi S, Ide Y, Ikeue T, Suzuki M, Chen PP, Takahashi M, Osuka A. Different Antiferromagnetic Coupling between 5,5′‐ and 10,10′‐Linked Iron(III) Corrole Dimers. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601363] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Takayuki Tanaka
- Department of Chemistry Graduate School of Science Kyoto University 606‐8502 Sakyo‐ku, Kyoto Japan
| | - Shota Ooi
- Department of Chemistry Graduate School of Science Kyoto University 606‐8502 Sakyo‐ku, Kyoto Japan
| | - Yuki Ide
- Department of Chemistry, Graduate School of Science and Engineering Shimane University 1060 Nishikawatsu, Matsue 690‐8504 Japan
| | - Takahisa Ikeue
- Department of Chemistry, Graduate School of Science and Engineering Shimane University 1060 Nishikawatsu, Matsue 690‐8504 Japan
| | - Masaaki Suzuki
- Department of Chemistry, Graduate School of Science and Engineering Shimane University 1060 Nishikawatsu, Matsue 690‐8504 Japan
| | - Peter P.‐Y. Chen
- Department of Chemistry National Chung Hsing University Taichung 402 Taiwan Republic of China
| | - Masashi Takahashi
- Department of Chemistry Faculty of Science and Research Center for Materials with Integrated Properties 274‐8510 Toho University Japan
| | - Atsuhiro Osuka
- Department of Chemistry Graduate School of Science Kyoto University 606‐8502 Sakyo‐ku, Kyoto Japan
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18
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Affiliation(s)
- Yuanyuan Fang
- School
of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhongping Ou
- School
of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Karl M. Kadish
- Department
of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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19
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Synthesis of Functionalized BODIPYs, BODIPY-Corrole, and BODIPY-Porphyrin Arrays with 1,2,3-Triazole Linkers Using the 4-Azido(tetrafluorophenyl)-BODIPY Building Block. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500413] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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20
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Sinha W, Kumar M, Garai A, Purohit CS, Som T, Kar S. Semi-insulating behaviour of self-assembled tin(IV)corrole nanospheres. Dalton Trans 2015; 43:12564-73. [PMID: 25005871 DOI: 10.1039/c4dt01257g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Three novel tin(iv)corrole complexes have been prepared and characterized by various spectroscopic techniques including single crystal X-ray structural analysis. Packing diagrams of the tin(iv)corroles revealed that corrolato-tin(iv)-chloride molecules are interconnected by intermolecular C-HCl hydrogen bonding interactions. HCl distances are 2.848 Å, 3.051 Å, and 2.915 Å, respectively, for the complexes. In addition, the C-HCl angles are 119.72°, 144.70°, and 147.08°, respectively, for the complexes. It was also observed that in one of the three synthesized complexes dimers were formed, while in the other two cases 1D infinite polymer chains were formed. Well-defined and nicely organized three-dimensional hollow nanospheres (SEM images on silicon wafers) with diameters of ca. 676 nm and 661 nm are obtained in the complexes, forming 1D polymer chains. By applying a thin layer of tin(iv)corrole nanospheres to an ITO surface (AFM height images of ITO films; ∼200 nm in height), a device was fabricated with the following composition: Ag/ITO-coated glass/tin(iv)corrole nanospheres/ITO-coated glass/Ag. The resistivity (ρ) of the nanostructured film was calculated to be ∼2.4 × 10(8) Ω cm, which falls in the range of semi-insulating semiconductors. CAFM current maps at 10 V bias show bright spots with a 10-20 pA intensity and indicate that the nanospheres (∼250 nm in diameter) are the electron-conducting pathway in the device. The semi-insulating behavior arises from the non-facile electron transfer in the HOMOs of the tin(iv)corrole nanospheres.
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Affiliation(s)
- Woormileela Sinha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar - 751005, India.
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21
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Pascualini ME, Di Russo NV, Quintero PA, Thuijs AE, Pinkowicz D, Abboud KA, Dunbar KR, Christou G, Meisel MW, Veige AS. Synthesis, Characterization, and Reactivity of Iron(III) Complexes Supported by a Trianionic ONO3– Pincer Ligand. Inorg Chem 2014; 53:13078-88. [DOI: 10.1021/ic502251p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Dawid Pinkowicz
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | | | - Kim R. Dunbar
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
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22
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Nardis S, Cicero DO, Licoccia S, Pomarico G, Berionni Berna B, Sette M, Ricciardi G, Rosa A, Fronczek FR, Smith KM, Paolesse R. Phenyl derivative of iron 5,10,15-tritolylcorrole. Inorg Chem 2014; 53:4215-27. [PMID: 24697623 PMCID: PMC4002138 DOI: 10.1021/ic5003572] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Indexed: 01/10/2023]
Abstract
The phenyl-iron complex of 5,10,15-tritolylcorrole was prepared by reaction of the starting chloro-iron complex with phenylmagnesium bromide in dichloromethane. The organometallic complex was fully characterized by a combination of spectroscopic methods, X-ray crystallography, and density functional theory (DFT) calculations. All of these techniques support the description of the electronic structure of this phenyl-iron derivative as a low-spin iron(IV) coordinated to a closed-shell corrolate trianion and to a phenyl monoanion. Complete assignments of the (1)H and (13)C NMR spectra of the phenyl-iron derivative and the starting chloro-iron complex were performed on the basis of the NMR spectra of the regioselectively β-substituted bromo derivatives and the DFT calculations.
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Affiliation(s)
- Sara Nardis
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | - Daniel O. Cicero
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | - Silvia Licoccia
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | - Giuseppe Pomarico
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | - Beatrice Berionni Berna
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | - Marco Sette
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
| | | | - Angela Rosa
- Dipartimento di
Scienze, Università della Basilicata, 85100 Potenza, Italy
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803, United States
| | - Kevin M. Smith
- Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803, United States
| | - Roberto Paolesse
- Department
of Chemical Science and Technologies, Università
di Roma Tor Vergata, 00133 Roma, Italy
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23
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Sinha W, Deibel N, Agarwala H, Garai A, Schweinfurth D, Purohit CS, Lahiri GK, Sarkar B, Kar S. Synthesis, Spectral Characterization, Structures, and Oxidation State Distributions in [(corrolato)FeIII(NO)]n (n = 0, +1, −1) Complexes. Inorg Chem 2014; 53:1417-29. [DOI: 10.1021/ic402304e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Woormileela Sinha
- School
of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, 751005, India
| | - Naina Deibel
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
- Institut
für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70550, Stuttgart, Germany
| | - Hemlata Agarwala
- Department
of Chemistry, Indian Institute of Technology−Bombay, Powai, Mumbai 400076, India
| | - Antara Garai
- School
of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, 751005, India
| | - David Schweinfurth
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Chandra Shekhar Purohit
- School
of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, 751005, India
| | - Goutam Kumar Lahiri
- Department
of Chemistry, Indian Institute of Technology−Bombay, Powai, Mumbai 400076, India
| | - Biprajit Sarkar
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Sanjib Kar
- School
of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, 751005, India
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24
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Gao D, Canard G, Giorgi M, Vanloot P, Balaban TS. Electronic and Steric Effects of the Peripheral Substitution in Deca- and Undecaaryl Metallocorroles. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301314] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Gao H, Chen F, Wang C, Wang G, Chen D. Vibrational Spectra and Density Functional Theory Calculations of Metallotriphenylcorroles. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/04/398-408] [Citation(s) in RCA: 3] [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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26
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Zhu C, Liang J, Wang B, Zhu J, Cao Z. Significant effect of spin flip on the oxygen atom transfer reaction from (oxo)manganese(V) corroles to thioanisole: insights from density functional calculations. Phys Chem Chem Phys 2013; 14:12800-6. [PMID: 22874974 DOI: 10.1039/c2cp41647f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The electronic and structural features of (oxo)manganese(V) corroles and their catalyzed oxygen atom transfers to thioanisole in different spin states have been investigated by the B3LYP functional calculations. Calculations show that these corrole-based oxidants and their complexes with thioanisole generally have the singlet ground state, and their triplet forms are also accessible in consideration of the spin-orbit coupling interaction. Due to strong d-π conjugation interactions between Mn and the corrole ring arising from the π electron donation of the corrole moiety, the five-coordinated Mn approximately has the stable 18-electron configuration. The predicted free energy barriers for the singlet oxygen atom transfer reactions are generally larger than 22 kcal mol(-1), while the spin flip in reaction may remarkably increase the reactivity. In particular, the bromination on β-pyrrole carbon atoms of the meso-substituted (oxo)manganese(V) corrole strikingly enhances the spin-orbit coupling interaction and results in the dramatic increase of reactivity. The multiple spin changes are predicted to be involved in the low-energy reaction pathway. The present results show good agreement with the experimental observation and provide a detailed picture for the oxygen atom transfer reaction induced by the (oxo)manganese(V) corroles.
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Affiliation(s)
- Chun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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27
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Bazanov MI, Berezina NM, Karimov DR, Berezin DB. Electrochemical and electrocatalytic properties of meso-triphenylcorrole and its complexes with Mn(III), Co(III), Cu(III), and Zn(II). RUSS J ELECTROCHEM+ 2012. [DOI: 10.1134/s1023193512040039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Ghosh A, Lee WZ, Ravikanth M. Synthesis, Structure and Properties of a Five-Coordinate Oxophosphorus(V) meso-Triphenylcorrole. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200651] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Singh P, Saltsman I, Mahammed A, Goldberg I, Tumanskii B, Gross Z. Iron complexes of tris(4-nitrophenyl)corrole, with emphasis on the (nitrosyl)iron complex. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612500605] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The iron complexes of 5,10,15-tris(4-nitrophenyl)corrole have been prepared and characterized by various spectroscopic techniques. The (nitrosyl)iron complex is diamagnetic and its X-ray structure reveals an almost perfectly linear Fe–N–O bond. EPR spectroscopy in conjunction with 15N labelling were used to deduce the redox centre of the one-electron reduction and oxidation products of the (nitrosyl)iron corrole.
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Affiliation(s)
- Pinky Singh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Irena Saltsman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Atif Mahammed
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Israel Goldberg
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
| | - Boris Tumanskii
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
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30
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Gao HL, Yao GH, Chen F, Wang WL, Chen DM. Density Functional Theory Investigation of Structures and Electronic Spectra of N-protonated Corroles. CHINESE J CHEM PHYS 2012. [DOI: 10.1088/1674-0068/25/03/281-290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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PAOLESSE ROBERTO, SAGONE FRANCESCO, MACAGNANO ANTONELLA, BOSCHI TRISTANO, PRODI LUCA, MONTALTI MARCO, ZACCHERONI NELSI, BOLLETTA FABRIZIO, SMITH KEVINM. Photophysical Behaviour of Corrole and its Symmetrical and Unsymmetrical Dyads. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1002/(sici)1099-1409(199906)3:5<364::aid-jpp141>3.0.co;2-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The luminescence properties at room temperature and 77 K of octamethylcorrole are reported for the first time, together with the photophysical behaviour of corrole-corrole and porphyrin-corrole dyads covalently linked through the 10-position with a phenyl bridge. The photophysical properties of corrole free base are very similar to those of the porphyrin analogues, whereas the dimeric systems show luminescence bands different from those of the parent monomers, indicating an unexpectedly high degree of interaction between the chromophores. The porphyrin-corrole dyad undergoes photocatalysed ring opening of the corrole moiety to give the corresponding porphyrin-biliverdin species.
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Affiliation(s)
- ROBERTO PAOLESSE
- Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica, I-00173 Roma, Italy
| | - FRANCESCO SAGONE
- Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica, I-00173 Roma, Italy
| | - ANTONELLA MACAGNANO
- Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica, I-00173 Roma, Italy
| | - TRISTANO BOSCHI
- Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica, I-00173 Roma, Italy
| | - LUCA PRODI
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy
| | - MARCO MONTALTI
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy
| | - NELSI ZACCHERONI
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy
| | - FABRIZIO BOLLETTA
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy
| | - KEVIN M. SMITH
- Department of Chemistry, University of California, Davis, CA 95616, USA
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32
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Ghosh A, Ravikanth M. Synthesis, Structure, Spectroscopic, and Electrochemical Properties of Highly Fluorescent Phosphorus(V)-meso-Triarylcorroles. Chemistry 2012; 18:6386-96. [DOI: 10.1002/chem.201103226] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 01/27/2012] [Indexed: 11/07/2022]
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33
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Nardis S, Stefanelli M, Mohite P, Pomarico G, Tortora L, Manowong M, Chen P, Kadish KM, Fronczek FR, McCandless GT, Smith KM, Paolesse R. β-Nitro derivatives of iron corrolates. Inorg Chem 2012; 51:3910-20. [PMID: 22394192 PMCID: PMC3307940 DOI: 10.1021/ic3002459] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two different methods for the regioselective nitration of different meso-triarylcorroles leading to the corresponding β-substituted nitrocorrole iron complexes have been developed. A two-step procedure affords three Fe(III) nitrosyl products-the unsubstituted corrole, the 3-nitrocorrole, and the 3,17-dinitrocorrole. In contrast, a one-pot synthetic approach drives the reaction almost exclusively to formation of the iron nitrosyl 3,17-dinitrocorrole. Electron-releasing substituents on the meso-aryl groups of the triarylcorroles induce higher yields and longer reaction times than what is observed for the synthesis of similar triarylcorroles with electron-withdrawing functionalities, and these results can be confidently attributed to the facile formation and stabilization of an intermediate iron corrole π-cation radical. Electron-withdrawing substituents on the meso-aryl groups of triarylcorrole also seem to labilize the axial nitrosyl group which, in the case of the pentafluorophenylcorrole derivative, results in the direct formation of a disubstituted iron μ-oxo dimer complex. The influence of meso-aryl substituents on the progress and products of the nitration reaction was investigated. In addition, to elucidate the most important factors which influence the redox reactivity of these different iron nitrosyl complexes, selected compounds were examined by cyclic voltammetry and thin-layer UV-visible or FTIR spectroelectrochemistry in CH(2)Cl(2).
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Affiliation(s)
- Sara Nardis
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
| | - Manuela Stefanelli
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
| | - Pruthviraj Mohite
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
| | - Giuseppe Pomarico
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
| | - Luca Tortora
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
| | - Machima Manowong
- Department of Chemistry, University of Houston, Houston, Texas, 77204-5003 USA
| | - Ping Chen
- Department of Chemistry, University of Houston, Houston, Texas, 77204-5003 USA
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, Texas, 77204-5003 USA
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 USA
| | - Gregory T. McCandless
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 USA
| | - Kevin M. Smith
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 USA
| | - Roberto Paolesse
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via della Ricerca Scientifica, 1, 00133 Rome, Italy
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34
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Fryxelius J, Eilers G, Feyziyev Y, Magnuson A, Sun L, Lomoth R. Synthesis and redox properties of a [meso-tris(4-nitrophenyl) corrolato]Mn(III) complex. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424605000472] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The Mn complexated corrole [ T (4- NO 2 P ) Corr ] Mn ( py ) (3) has been prepared ( py = pyridine ) where [ T (4- NO 2 P ) Corr ] is the trianion of the electron-poor 5,10,15-tris(4-nitrophenyl)corrole (1). The preparation of 3 includes a new synthetic method to form the corrole ligand 1 in a two-step synthesis. The Mn(III) complex gives a parallel mode EPR signal centered around g = 8.2 with six distinct hyperfine lines ( A || = 139 × 10-4 cm -1). Electrochemically 3 undergoes one reversible oxidation ( E 1/2 = 0.12 V vs Fc) and two reversible reductions ( E 1/2 = -1.45, -1.61 V). The oxidation is metal-centered and the product has been characterized by EPR spectroscopy as an S = 3/2 Mn(IV) species with no indication for oxidation of the macrocycle. The reductions of complex 3 are ligand based, and at the potential of the second reduction step a stable nitrogen centered radical with g = 2.0055 is generated. Chemical oxidation of 3 by iodosobenzene yields a Mn(IV) complex and epoxidation of cis-stilbene is not catalyzed by the Mn complex.
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Affiliation(s)
- Jacob Fryxelius
- Department of Organic Chemistry, Arrhenius Laboratories, Stockholm University, S-106 91 Stockholm, Sweden
| | - Gerriet Eilers
- Department of Physical Chemistry, BMC, Uppsala University, P.O. Box 579, S-751 23 Uppsala, Sweden
| | - Yashar Feyziyev
- Molecular Biomimetics, Uppsala University, Villavägen 6, S-752 36 Uppsala, Sweden
| | - Ann Magnuson
- Molecular Biomimetics, Uppsala University, Villavägen 6, S-752 36 Uppsala, Sweden
| | - Licheng Sun
- Department of Organic Chemistry, Arrhenius Laboratories, Stockholm University, S-106 91 Stockholm, Sweden
| | - Reiner Lomoth
- Department of Physical Chemistry, BMC, Uppsala University, P.O. Box 579, S-751 23 Uppsala, Sweden
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35
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Ou Z, Erben C, Autret M, Will S, Rosen D, Lex J, Vogel E, Kadish KM. Manganese(III) and manganese(IV) corroles: synthesis, spectroscopic, electrochemical and X-ray structural characterization. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424605000502] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The synthesis, spectroscopic characterization and electrochemistry of four Mn(III) and Mn(IV) octaethylcorroles are reported and the potentials of the Mn(III) / Mn(IV) and Mn(IV) / Mn(III) processes examined as a function of the axial ligand. The investigated compounds are represented as ( OEC ) Mn , ( OEC ) MnCl , ( OEC ) Mn ( py ) and ( OEC ) Mn ( C 6 H 5) where OEC is the trianion of octaethylcorrole. The first one-electron oxidation of ( OEC ) Mn III and ( OEC ) Mn III ( py ) in PhCN or pyridine containing 0.1 M TBAP leads to the facile formation of a Mn(IV) species while the first one-electron reduction of ( OEC ) Mn IV Cl and ( OEC ) Mn IV ( C 6 H 5) in the same two solvents leads to the Mn(III) corrole. All other redox reactions occur at the corrole macrocycle to give π-cation radicals or π-anion radicals and there is no evidence for electrogeneration of a compound with a Mn(II) oxidation state as is the case for manganese(III) porphyrins which are all easily reduced to the Mn(II) state in nonaqueous media. The products of each Mn(III)/Mn(IV) redox reaction were characterized by UV-visible and/or ESR spectroscopy and the structures of ( OEC ) MnCl , ( OEC ) Mn ( py ) and ( OEC ) Mn ( C 6 H 5) were determined by single-crystal X-ray diffraction.
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Affiliation(s)
- Zhongping Ou
- Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA
| | - Christoph Erben
- Institut für Organische Chemie, Universität zu Köln, Greinstraße 4, 50939 Köln, Germany
| | - Marie Autret
- Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA
| | - Stefan Will
- Institut für Organische Chemie, Universität zu Köln, Greinstraße 4, 50939 Köln, Germany
| | - Daniel Rosen
- Institut für Organische Chemie, Universität zu Köln, Greinstraße 4, 50939 Köln, Germany
| | - Johann Lex
- Institut für Organische Chemie, Universität zu Köln, Greinstraße 4, 50939 Köln, Germany
| | - Emanuel Vogel
- Institut für Organische Chemie, Universität zu Köln, Greinstraße 4, 50939 Köln, Germany
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA
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36
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Schwalbe M, Dogutan DK, Stoian SA, Teets TS, Nocera DG. Xanthene-Modified and Hangman Iron Corroles. Inorg Chem 2011; 50:1368-77. [DOI: 10.1021/ic101943h] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Schwalbe
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dilek K. Dogutan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Sebastian A. Stoian
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Thomas S. Teets
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Daniel G. Nocera
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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37
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Affiliation(s)
- Vijayendra S. Shetti
- Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India
| | - Uday R. Prabhu
- NMR Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Mangalampalli Ravikanth
- Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India
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38
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Matsuo T, Hayashi A, Abe M, Matsuda T, Hisaeda Y, Hayashi T. Meso-Unsubstituted Iron Corrole in Hemoproteins: Remarkable Differences in Effects on Peroxidase Activities between Myoglobin and Horseradish Peroxidase. J Am Chem Soc 2009; 131:15124-5. [DOI: 10.1021/ja907428e] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takashi Matsuo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Akihiro Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Masato Abe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Takaaki Matsuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Yoshio Hisaeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Takashi Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan, Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
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39
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40
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A study of nerve agent model organophosphonate binding with manganese-A2B-corrole and -A2B2-porphyrin systems. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.04.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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McGown AJ, Kerber WD, Fujii H, Goldberg DP. Catalytic Reactivity of a Meso-N-Substituted Corrole and Evidence for a High-Valent Iron−Oxo Species. J Am Chem Soc 2009; 131:8040-8. [DOI: 10.1021/ja809183z] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amanda J. McGown
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore Maryland, 21218, and Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8787, Japan
| | - William D. Kerber
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore Maryland, 21218, and Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8787, Japan
| | - Hiroshi Fujii
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore Maryland, 21218, and Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8787, Japan
| | - David P. Goldberg
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore Maryland, 21218, and Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8787, Japan
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42
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Shen J, El Ojaimi M, Chkounda M, Gros CP, Barbe JM, Shao J, Guilard R, Kadish KM. Solvent, anion, and structural effects on the redox potentials and UV-visible spectral properties of mononuclear manganese corroles. Inorg Chem 2008; 47:7717-27. [PMID: 18671345 DOI: 10.1021/ic8007415] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of manganese(III) corroles were investigated as to their electrochemistry and spectroelectrochemistry in nonaqueous solvents. Up to three oxidations and one reduction were obtained for each complex depending on the solvents. The main compound discussed in this paper is the meso-substituted manganese corrole, (Mes 2PhCor)Mn, and the main points are how changes in axially coordinated anion and solvent will affect the redox potentials and UV-vis spectra of each electrogenerated species in oxidation states of Mn(III), Mn(IV), or Mn(II). The anions OAc (-), Cl (-), CN (-), and SCN (-) were found to form five-coordinate complexes with the neutral Mn(III) corrole while two OH (-) or F (-) anions were shown to bind axially in a stepwise addition to give the five- and six-coordinate complexes in nonaqueous media. In each case, complexation with one or two anionic axial ligands led to an easier oxidation and a harder reduction as compared to the uncomplexed four-coordinate species.
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Affiliation(s)
- Jing Shen
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA
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43
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Goldberg DP. Corrolazines: new frontiers in high-valent metalloporphyrinoid stability and reactivity. Acc Chem Res 2007; 40:626-34. [PMID: 17580977 DOI: 10.1021/ar700039y] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The activation of dioxygen and its analogues, such as hydrogen peroxide, by metalloporphyrins leads to the generation of high-valent metal-oxo species. This process is critically important to heme-catalyzed reactions, such as for cytochrome P450, and synthetic porphyrin-catalyzed oxidations. We have synthesized a new ring-contracted porphyrinoid system called a corrolazine that is designed to stabilize high oxidation states, including high-valent metal-oxo species. The corrolazine ligand stabilizes manganese(V) terminal oxo and terminal imido complexes for isolation, both of which are only transiently observed with normal porphyrin macrocycles. Examination of both oxygen atom transfer and hydrogen atom abstraction reactions for the Mn(V)-oxo complex has led to a number of mechanistic insights regarding these transformations. The activation of H 2O 2 to give the Mn(V)-oxo complex exhibits some dramatic and unexpected axial ligand effects that call into question the normal role of axial ligands in O-O bond cleavage pathways.
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Affiliation(s)
- David P Goldberg
- The Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA
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44
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Bröring M, Brégier F, Cónsul Tejero E, Hell C, Holthausen MC. Revisiting the electronic ground state of copper corroles. Angew Chem Int Ed Engl 2007; 46:445-8. [PMID: 17131440 DOI: 10.1002/anie.200603676] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Bröring
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany.
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45
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Bröring M, Brégier F, Cónsul Tejero E, Hell C, Holthausen M. Zum elektronischen Grundzustand des Kupfercorrols. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200603676] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Walker FA, Licoccia S, Paolesse R. Iron corrolates: Unambiguous chloroiron(III) (corrolate)2− π-cation radicals. J Inorg Biochem 2006; 100:810-37. [PMID: 16519943 DOI: 10.1016/j.jinorgbio.2006.01.038] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2005] [Revised: 01/09/2006] [Accepted: 01/09/2006] [Indexed: 10/24/2022]
Abstract
The structures, electron configurations, magnetic susceptibilities, spectroscopic properties, molecular orbital energies and spin density distributions, redox properties and reactivities of iron corrolates having chloride, phenyl, pyridine, NO and other ligands are reviewed. It is shown that with one very strong donor ligand such as phenyl anion the electron configuration of the metal is d(4)S=1 Fe(IV) coordinated to a (corrolate)(3-) anion, while with one weaker donor ligand such as chloride or other halide, the electron configuration is d(5)S=3/2 Fe(III) coordinated to a (corrolate)(2-.) pi-cation radical, with antiferromagnetic coupling between the metal and corrolate radical electron. Many of these complexes have been studied by electrochemical techniques and have rich redox reactivity, in most cases involving two 1-electron oxidations and two 1-electron reductions, and it is not possible to tell, from the shapes of cyclic voltammetric waves, whether the electron is added or removed from the metal or the macrocycle; often infrared, UV-Vis, or EPR spectroscopy can provide this information. (1)H and (13)C NMR spectroscopic methods are most useful in delineating the spin state and pattern of spin density distribution of the complexes listed above, as would also be expected to be the case for the recently-reported formal Fe(V)O corrolate, if this complex were stable enough for characterization by NMR spectroscopy. Iron, manganese and chromium corrolates can be oxidized by iodosylbenzene and other common oxidants used previously with metalloporphyrinates to effect efficient oxidation of substrates. Whether the "resting state" form of these complexes, most generally in the case of iron [FeCl(Corr)], actually has the electron configuration Fe(IV)(Corr)(3-) or Fe(III)(Corr)(2-.) is not relevant to the high-valent reactivity of the complex.
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Affiliation(s)
- F Ann Walker
- Department of Chemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721-0041, USA.
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47
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Abstract
The rotating ring disk electrode method has been used to study O2 electroreduction with metal corroles. Catalysis begins at potentials that are 0.5-0.7 V more positive than the expected potential of the M(III/II) couple based on studies in non-aqueous solutions. The path of O2 reduction depends on the nature of the metal ion. Cobalt corroles promote O2 reduction to H2O2. Iron corroles catalyse O2 reduction via parallel two- and four-electron pathways, with a predominate four-electron reaction. The rate constants for the individual O2 reduction paths are given at pH 7. Mechanisms are proposed on the basis of pH dependence, inhibition studies, and Tafel slopes. An imidazole-tailed iron corrole catalyses H2O2 disproportionation analogous to catalase.
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Affiliation(s)
- James P Collman
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA.
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48
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Guilard R, Gros CP, Barbe JM, Espinosa E, Jérôme F, Tabard A, Latour JM, Shao J, Ou Z, Kadish KM. Alkyl- and Aryl-Substituted Corroles. 5. Synthesis, Physicochemical Properties, and X-ray Structural Characterization of Copper Biscorroles and Porphyrin−Corrole Dyads. Inorg Chem 2004; 43:7441-55. [PMID: 15530095 DOI: 10.1021/ic049651c] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and characterization of cofacial copper biscorroles and porphyrin-corroles linked by a biphenylenyl or anthracenyl spacer are described. The investigated compounds are represented as (BCA)Cu(2) and (BCB)Cu(2) in the case of the biscorrole (BC) derivatives and (PCA)Cu(2) and (PCB)Cu(2) in the case of porphyrin (P)-corrole (C) dyads, where A and B represent the anthracenyl and biphenylenyl bridges, respectively. A related monomeric corrole (Me(4)Ph(5)Cor)Cu and monomeric porphyrin (Me(2)Et(6)PhP)Cu that comprise the two halves of the porphyrin-corrole dyads were also studied. Electron spin resonance (ESR), (1)H NMR, and magnetic measurements data demonstrate that the copper corrole macrocycle, when linked to another copper corrole or copper(II) porphyrin, can be considered to be a Cu(III) complex in equilibrium with a Cu(II) radical species, copper(III) corrole being the main oxidation state of the corrole species at all temperatures. The cofacial orientation of (BCB)Cu(2), (BCA)Cu(2), and (PCB)Cu(2) was confirmed by X-ray crystallography. Structural data: (BCB)Cu(2)(C(110)H(82)N(8)Cu(2).3CDCl(3)), triclinic, space group P, a = 10.2550(2) A, b = 16.3890(3) A, c = 29.7910(8) A, alpha = 74.792(1) degrees , beta = 81.681(1) degrees , gamma = 72.504(2) degrees , Z = 2; (BCA)Cu(2)(C(112)H(84)N(8)Cu(2).C(7)H(8).1.5H(2)O), monoclinic, space group P 2(1)/c, a = 16.0870(4) A, b = 35.109(2) A, c = 19.1390(8) A, beta = 95.183(3) degrees , Z = 4; (PCB)Cu(2)(C(89)H(71)N(8)Cu(2).CHCl(3)), monoclinic, space group P2(1)/n, a = 16.7071(3) A, b = 10.6719(2) A, c = 40.8555(8) A, beta = 100.870(1) degrees , Z = 4. The two cofacial biscorroles, (BCA)Cu(2) and (BCB)Cu(2), both show three electrooxidations under the same solution conditions. The reduction of (BCA)Cu(2) involves a reversible electron addition to each macrocycle at the same potential of E(1/2) = -0.20 V although (BCB)Cu(2) is reversibly reduced in two steps to give first [(BCB)Cu(2)](-) and then [(BCB)Cu(2)](2)(-), each of which was characterized by ESR spectroscopy as containing a Cu(II) center. These latter electrode reactions occur at E(1/2) = -0.36 and -0.51 V versus a saturated calomel reference electrode. The half-reduced and fully reduced (BCB)Cu(2) show similar Cu(II) ESR spectra, and no evidence of a triplet signal is observed. The two well-separated reductions of (BCB)Cu(2) to give [(BCB)Cu(2)](2)(-) can be attributed to a stronger pi-pi interaction between the two macrocycles of this dimer as compared to those of (BCA)Cu(2). The copper porphyrin-corrole dyads, (PCA)Cu(2) and (PCB)Cu(2), show five reversible oxidations and two reversible reductions, and these potentials are compared with corresponding values for electrochemical reactions of the porphyrin and corrole monomers under the same solution conditions.
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Affiliation(s)
- Roger Guilard
- Université de Bourgogne, LIMSAG UMR 5633, Faculté des Sciences Gabriel, 6 boulevard Gabriel, 21000-Dijon, France.
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49
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Ramdhanie B, Telser J, Caneschi A, Zakharov LN, Rheingold AL, Goldberg DP. An Example of O2 Binding in a Cobalt(II) Corrole System and High-Valent Cobalt−Cyano and Cobalt−Alkynyl Complexes. J Am Chem Soc 2004; 126:2515-25. [PMID: 14982461 DOI: 10.1021/ja036983s] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel cobalt corrolazine (Cz) complexes (TBP)(8)CzCoCN (1) and (TBP)(8)CzCo(CCSiPh(3)) (2) have been synthesized and examined in light of the recent intense interest regarding the role of corrole ligands in stabilizing high oxidation states. In the case of 2, the molecular structure has been determined by X-ray crystallography, revealing a short Co[bond]C distance of 1.831(4) A and an intermolecular pi-stacking interaction between Cz ring planes, and this structure has been analyzed in regards to the electronic configuration. By a combination of spectroscopic techniques it has been shown that 1 is best described as a cobalt(III)[bond]pi-cation-radical complex, whereas 2 is likely best represented as the resonance hybrid (Cz)Co(IV)(CCSiPh(3)) <--> (Cz+*)Co(III)(CCSiPh(3)). The reduced cobalt(II) complex, [(TBP)(8)CzCo(II)(py)](-), has been generated in situ and shown to bind dioxygen at low temperature to give [(TBP)(8)CzCo(III)(py)(O(2))](-). For the reduced complex [(TBP)(8)CzCo(II)(py)](-), the EPR spectrum in frozen solution is indicative of a low-spin cobalt(II) complex with a d(z)2 ground state. Exposure of [(TBP)(8)CzCo(II)(py)](-) to O(2) leads to the reversible formation of the cobalt(III)-superoxo complex [(TBP)(8)CzCo(III)(py)(O(2))](-), which has been characterized by EPR spectroscopy. VT-EPR measurements show that the dioxygen adduct is stable up to T approximately 240 K. This work is the first observation, to our knowledge, of O(2) binding to a cobalt(II) corrole.
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Affiliation(s)
- Bobby Ramdhanie
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA
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50
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Kadish KM, Shao J, Ou Z, Gros CP, Bolze F, Barbe JM, Guilard R. Alkyl- and aryl-substituted corroles. 4. Solvent effects on the electrochemical and spectral properties of cobalt corroles. Inorg Chem 2003; 42:4062-70. [PMID: 12817962 DOI: 10.1021/ic030010b] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solvent effects on the electrochemistry and spectroscopic properties of alkyl- and aryl-substituted corroles in nonaqueous media are reported. The oxidation and reduction of six compounds containing zero to seven phenyl or substituted phenyl groups on the macrocycle were studied in four different nonaqueous solvents (CH(2)Cl(2), PhCN, THF, and pyridine) containing 0.1 M tetra-n-butylammonium perchlorate. Dimers were formed upon oxidation of all corroles in CH(2)Cl(2), but this was not the case in the other three solvents, where either monomers or dimers were formed upon oxidation depending upon the solvent Gutmann donor number and the number or location of aryl substituents on the macrocycle. The half-wave potentials were analyzed as a function of the number of aryl substituents on the macrocycle as well as the concentration of added pyridine to PhCN solutions of the compound, and these data were combined with data from the spectroelectrochemistry experiments to determine the stoichiometry of the species actually in solution after the first oxidation or first reduction of each compound. The results of these experiments indicate that reduction of the bispyridine adduct (Cor)Co(III)(py)(2) proceeds via the monopyridine complex (Cor)Co(III)(py) to give in each case the unligated cobalt(II) corrole [(Cor)Co(II)](-). In contrast, pyridine remains coordinated after electrooxidation, and the final product was characterized as [(Cor)Co(III)(py)(2)](+).
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Affiliation(s)
- Karl M Kadish
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
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