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Koczorowski T, Rębiś T. The Influence of an Extended π Electron System on the Electrochemical Properties and Oxidizing Activity of a Series of Iron(III) Porphyrazines with Bulky Pyrrolyl Substituents. Molecules 2023; 28:7214. [PMID: 37894693 PMCID: PMC10609377 DOI: 10.3390/molecules28207214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
The present study investigates four iron(II/III) porphyrazines with extending pyrrolyl peripheral substituents to understand the impact of introduced phenyl rings on the macrocycle's electrochemical and spectroelectrochemical properties as well as their activity in oxidation reactions. The electrochemical studies showed six well-defined redox processes and quasi-reversible one-electron transfers-two originating from the iron cation and four related to the ring. Adding phenyl rings to the periphery increased the electrochemical gap by 0.1 V. The UV-Vis spectra changes were observed at the applied potential of -1.3 V with the presence of additional red-shifted bands. The oxidizing studies showed increased efficiency in the oxidation reaction of the reference substrate in the cases of Pz1 and Pz2 in both studied oxygen atom donors. The calculated reaction rates in t-BuOOH were 12.0 and 15.0 mmol/min, respectively, for Pz1 and Pz2, compared to 6.4 for Pz3 and 1.8 mmol/min for Pz4. The study identified potential applications for these porphyrazines in mimicking cytochrome P450 prosthetic groups for oxidation and hydroxylation reactions in the future.
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Affiliation(s)
- Tomasz Koczorowski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Tomasz Rębiś
- Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland;
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The Valence and Spin State Tuning of Iron(II/III) Porphyrazines with Bulky Pyrrolyl Periphery in Solution and Solid State. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227820. [PMID: 36431922 PMCID: PMC9695394 DOI: 10.3390/molecules27227820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022]
Abstract
Iron(III) porphyrazines containing peripheral 2,5-dimethyl-, 2-methyl-5-phenyl-, and 2,3,5-triphenyl-1H-pyrrol-1-yl substituents were synthesized and subjected to physicochemical characterization. This was accomplished by high-resolution mass spectrometry, nuclear magnetic resonance (as diamagnetic Fe(II) derivatives), HPLC purity analysis, and UV-Vis spectroscopy, accompanied by the solvation study in dichloromethane and pyridine. X-ray structure analysis was performed for a single crystal of the previously obtained 2,5-diphenyl-substituted derivative of porphyrazine complex (5d). The octahedral geometries of iron cation, present in the porphyrazine core, influenced the packing mode of molecules in the crystals. Mössbauer studies, performed for solid samples of iron porphyrazines, indicated that low-spin reduced iron states might occupy low- or high-symmetry binding sites. It was found that the hyperfine parameters and the subsequent contribution of the iron cations depend on the number of phenyl groups surrounding the pyrrolyl moiety. For iron(II) porphyrazine 2,3,5-triphenylpyrrol-1-yl substituents (5b), a high-spin ferrous state fraction was observed. Temperature-dependent measurements showed that the freed rotation of the peripheral porphyrazine ligands and the increased flexibility of the macrocycle ring result in the Fe2+ ion being stabilized in a diamagnetic state at a binding site of high symmetry at room temperature in the solid state. This process is most probably stimulated by the range of collective motions of the polymeric ribbons consisting of iron(II) porphyrazines observed in the X-ray.
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Ivanova SS, Salnikov DS, Knorr G, Ledovich O, Sliznev V, Kubat P, Novakova V, Stuzhin PA. Water-soluble sulfonated phosphorus(V) corrolazines and porphyrazines: the effect of macrocycle contraction and pyrazine ring fusion on spectral, acid-base and photophysical properties. Dalton Trans 2021; 51:1364-1377. [PMID: 34935016 DOI: 10.1039/d1dt02453a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel water-soluble dihydroxophosphorus(V) complexes of sulphophenyl substituted porphyrazine (6), corrolazine (7) and its pyrazine fused derivative (8) were prepared and their spectral, acid-base and photophysical properties in aqueous solutions were studied. Due to the presence of eight SO3H groups, the compounds were fully monomeric (7 and 8) or only slightly aggregated (6) in water. Spectrophotometric titration revealed that the two stage deprotonation of axially bonded hydroxy groups can be achieved for porphyrazine 6 (pKa1 = 5.62, pKa2 = 9.13) and pyrazine fused corrolazine 8 (pKa1 = 6.5, pKa2 = 11.7), while only the first dissociation stage could be observed for corrolazine 7 (pKa1 = 9.94). The fluorescence emission of the corrolazines 7, 8 and especially porphyrazine 6 was low in water (ΦF = 0.086, 0.18, and 0.014, respectively) and completely quenched under basic conditions due to photoinduced electron transfer. In comparison with porphyrazine 6, the contraction of the macrocycle in the corrolazines 7 and 8 induced significant improvement of singlet oxygen production in water reaching values of ΦΔ = 0.56 and 0.43, respectively, which makes the corrolazines promising photosensitizers for photodynamic therapy. The observed evolution of the electronic absorption spectra and fluorescence quenching observed in a basic medium was explained using the model DFT calculations (cc-pvtz basis set) performed for the dihydroxophosphorus(V) complexes of unsubstituted porphyrazine and corrolazine and their mono- and doubly deprotonated forms.
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Affiliation(s)
- Svetlana S Ivanova
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
| | - Denis S Salnikov
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
| | - Gleb Knorr
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
| | - Olesja Ledovich
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
| | - Valerij Sliznev
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
| | - Pavel Kubat
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, 182 23 Prague, Czech Republic
| | - Veronika Novakova
- Faculty of Pharmacy in Hradec Kralove, Charles University, Hradec Kralove, 500 05 Czech Republic
| | - Pavel A Stuzhin
- Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia.
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Haller P, Machado I, Torres J, Vila A, Veiga N. Fe(III)-Complex-Imprinted Polymers for the Green Oxidative Degradation of the Methyl Orange Dye Pollutant. Polymers (Basel) 2021; 13:3127. [PMID: 34578028 PMCID: PMC8468195 DOI: 10.3390/polym13183127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 11/25/2022] Open
Abstract
One of the biggest problems worldwide is the pollution of natural water bodies by dyes coming from effluents used in the textile industry. In the quest for novel effluent treatment alternatives, the aim of this work was to immobilize Fe(III) complexes in molecularly imprinted polymers (MIPs) to produce efficient Fenton-like heterogeneous catalysts for the green oxidative degradation of the methyl orange (MO) dye pollutant. Different metal complexes bearing commercial and low-cost ligands were assayed and their catalytic activity levels towards the discoloration of MO by H2O2 were assessed. The best candidates were Fe(III)-BMPA (BMPA = di-(2-picolyl)amine) and Fe(III)-NTP (NTP = 3,3',3″-nitrilotripropionic acid), displaying above 70% MO degradation in 3 h. Fe(III)-BMPA caused the oxidative degradation through two first-order stages, related to the formation of BMPA-Fe-OOH and the generation of reactive oxygen species. Only the first of these stages was detected for Fe(III)-NTP. Both complexes were then employed to imprint catalytic cavities into MIPs. The polymers showed catalytic profiles that were highly dependent on the crosslinking agent employed, with N,N-methylenebisacrylamide (MBAA) being the crosslinker that rendered polymers with optimal oxidative performance (>95% conversion). The obtained ion-imprinted polymers constitute cheap and robust solid matrices, with the potential to be coupled to dye-containing effluent treatment systems with synchronous H2O2 injection.
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Affiliation(s)
- Paulina Haller
- Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República (UdelaR), Av. Gral. Flores 2124, Montevideo 11800, Uruguay; (P.H.); (J.T.)
| | - Ignacio Machado
- Química Analítica, Departamento Estrella Campos, Facultad de Química, Universidad de la República (UdelaR), Av. Gral. Flores 2124, Montevideo 11800, Uruguay;
| | - Julia Torres
- Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República (UdelaR), Av. Gral. Flores 2124, Montevideo 11800, Uruguay; (P.H.); (J.T.)
| | - Agustina Vila
- Laboratorio de Biocatálisis y Biotransformaciones, Departamento de Química Orgánica, Facultad de Química, Universidad de la República (UdelaR), Av. Gral. Flores 2124, Montevideo 11800, Uruguay;
| | - Nicolás Veiga
- Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República (UdelaR), Av. Gral. Flores 2124, Montevideo 11800, Uruguay; (P.H.); (J.T.)
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Kundu S, Shen LQ, Somasundar Y, Annavajhala M, Ryabov AD, Collins TJ. TAML- and Buffer-Catalyzed Oxidation of Picric Acid by H 2O 2: Products, Kinetics, DFT, and the Mechanism of Dual Catalysis. Inorg Chem 2020; 59:13223-13232. [DOI: 10.1021/acs.inorgchem.0c01581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soumen Kundu
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Longzhu Q. Shen
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, United Kingdom
| | - Yogesh Somasundar
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Medini Annavajhala
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D. Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J. Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Warner GR, Somasundar Y, Weng C, Akin MH, Ryabov AD, Collins TJ. Zero-Order Catalysis in TAML-Catalyzed Oxidation of Imidacloprid, a Neonicotinoid Pesticide. Chemistry 2020; 26:7631-7637. [PMID: 32187755 DOI: 10.1002/chem.202000384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/17/2020] [Indexed: 02/02/2023]
Abstract
Bis-sulfonamide bis-amide TAML activator [Fe{4-NO2 C6 H3 -1,2-(NCOCMe2 NSO2 )2 CHMe}]- (2) catalyzes oxidative degradation of the oxidation-resistant neonicotinoid insecticide, imidacloprid (IMI), by H2 O2 at pH 7 and 25 °C, whereas the tetrakis-amide TAML [Fe{4-NO2 C6 H3 -1,2-(NCOCMe2 NCO)2 CF2 }]- (1), previously regarded as the most catalytically active TAML, is inactive under the same conditions. At ultra-low concentrations of both imidacloprid and 2, 62 % of the insecticide was oxidized in 2 h, at which time the catalyst is inactivated; oxidation resumes on addition of a succeeding aliquot of 2. Acetate and oxamate were detected by ion chromatography, suggesting deep oxidation of imidacloprid. Explored at concentrations [2]≥[IMI], the reaction kinetics revealed unusually low kinetic order in 2 (0.164±0.006), which is observed alongside the first order in imidacloprid and an ascending hyperbolic dependence in [H2 O2 ]. Actual independence of the reaction rate on the catalyst concentration is accounted for in terms of a reversible noncovalent binding between a substrate and a catalyst, which usually results in substrate inhibition when [catalyst]≪[substrate] but explains the zero order in the catalyst when [2]>[IMI]. A plausible mechanism of the TAML-catalyzed oxidations of imidacloprid is briefly discussed. Similar zero-order catalysis is presented for the oxidation of 3-methyl-4-nitrophenol by H2 O2 , catalyzed by the TAML analogue of 1 without a NO2 -group in the aromatic ring.
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Affiliation(s)
- Genoa R Warner
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA.,Present Addresses: Department of Comparative Biosciences, University of Illinois, 2001 S. Lincoln Avenue, Urbana, IL 61802, USA
| | - Yogesh Somasundar
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Cindy Weng
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA.,Present Addresses: Department of Civil and Environmental Engineering, Stanford University, Y2E2, 473 Via Ortega, Stanford, CA, 94305, USA
| | - Mete H Akin
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Alexander D Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Terrence J Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
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7
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Somasundar Y, Lu IC, Mills MR, Qian LY, Olivares X, Ryabov AD, Collins TJ. Oxidative Catalysis by TAMLs: Obtaining Rate Constants for Non-Absorbing Targets by UV-Vis Spectroscopy. Chemphyschem 2020; 21:1083-1086. [PMID: 32291857 DOI: 10.1002/cphc.202000222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/13/2020] [Indexed: 11/07/2022]
Abstract
Understanding the catalysis of oxidative reactions by TAML activators of peroxides, i. e. iron(III) complexes of tetraamide macrocyclic ligands, advocated a spectrophotometric procedure for quantifying the catalytic activity of TAMLs for colorless targets (kII ', M-1 s-1 ), which is incomparably more advantageous in terms of time, cost, energy, and ecology than NMR, HPLC, UPLC, GC-MS and other similar techniques. Dyes Orange II or Safranin O (S) are catalytically bleached by non-excessive amount of H2 O2 in the presence of colorless substrates (S1 ) according to the rate law: -d[S]/dt=kI kII [H2 O2 ][S][TAML]/(kI [H2 O2 ]+kII [S]+kII '[S1 ]). The bleaching rate is thus a descending hyperbolic function of S1 : v=ab/(b+[S1 ]). Values of kII ' found from a and b for phenol and propranolol with commonly used TAML [FeIII {o,o'-C6 H4 (NCONMe2 CO)2 CMe2 }2 (OH2 )]+ are consistent with those for S1 (phenol, propranolol) obtained directly by UPLC. The study sends vital messages to enzymologists and environmentalists.
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Affiliation(s)
- Yogesh Somasundar
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Iris C Lu
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Matthew R Mills
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Lisa Y Qian
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Ximena Olivares
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Alexander D Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Terrence J Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
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8
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Din MI, Najeeb J, Hussain Z, Khalid R, Ahmad G. Biogenic scale up synthesis of ZnO nano-flowers with superior nano-photocatalytic performance. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1723026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Jawayria Najeeb
- Department of Chemistry, University of Gujrat, Gujrat, Pakistan
| | - Zaib Hussain
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Rida Khalid
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Ghazia Ahmad
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
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9
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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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10
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Somasundar Y, Shen LQ, Hoane AG, Tang LL, Mills MR, Burton AE, Ryabov AD, Collins TJ. Structural, Mechanistic, and Ultradilute Catalysis Portrayal of Substrate Inhibition in the TAML–Hydrogen Peroxide Catalytic Oxidation of the Persistent Drug and Micropollutant, Propranolol. J Am Chem Soc 2018; 140:12280-12289. [DOI: 10.1021/jacs.8b08108] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yogesh Somasundar
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Longzhu Q. Shen
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, U.K
| | - Alexis G. Hoane
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Liang L. Tang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew R. Mills
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Abigail E. Burton
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D. Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J. Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Procner M, Orzeł Ł, Stochel G, van Eldik R. Catalytic Degradation of Orange II by MnIII(TPPS) in Basic Hydrogen Peroxide Medium: A Detailed Kinetic Analysis. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800485] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Magdalena Procner
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Kraków Poland
| | - Łukasz Orzeł
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Kraków Poland
| | - Grażyna Stochel
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Kraków Poland
| | - Rudi van Eldik
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Kraków Poland
- Department of Chemistry and Pharmacy; University of Erlangen-Nürnberg; Egerlandstr. 1 91058 Erlangen Germany
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12
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Wallen CM, Bacsa J, Scarborough CC. Coordination of Hydrogen Peroxide with Late-Transition-Metal Sulfonamido Complexes. Inorg Chem 2017; 57:4841-4848. [DOI: 10.1021/acs.inorgchem.7b02514] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christian M. Wallen
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - John Bacsa
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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Etaiw SEH, Abd El-Aziz DM, Abdou SN. Single Crystal of New Nanostructure Self-Assembled Copper–Cyanide and Hexamethylenetetramine as an Efficient Supramolecular Coordination Polymer Catalyst. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0749-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Affiliation(s)
- Eike B. Bauer
- University of Missouri - St. Louis; Department of Chemistry and Biochemistry; One University Boulevard St. Louis, MO 63121 USA
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15
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New Coordination Complexes of Cd(II) and Co(II) with Ethyl Isonicotinate Used for Catalytic Degradation of Acid Blue 92 Dye. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0593-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Song Y, Mayes HG, Queensen MJ, Bauer EB, Dupureur CM. Spectroscopic investigation and direct comparison of the reactivities of iron pyridyl oxidation catalysts. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:130-137. [PMID: 27889672 DOI: 10.1016/j.saa.2016.11.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 11/06/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
The growing interest in green chemistry has fueled attention to the development and characterization of effective iron complex oxidation catalysts. A number of iron complexes are known to catalyze the oxidation of organic substrates utilizing peroxides as the oxidant. Their development is complicated by a lack of direct comparison of the reactivities of the iron complexes. To begin to correlate reactivity with structural elements, we compare the reactivities of a series of iron pyridyl complexes toward a single dye substrate, malachite green (MG), for which colorless oxidation products are established. Complexes with tetradentate, nitrogen-based ligands with cis open coordination sites were found to be the most reactive. While some complexes reflect sensitivity to different peroxides, others are similarly reactive with either H2O2 or tBuOOH, which suggests some mechanistic distinctions. [Fe(S,S-PDP)(CH3CN)2](SbF6)2 and [Fe(OTf)2(tpa)] transition under the oxidative reaction conditions to a single intermediate at a rate that exceeds dye degradation (PDP=bis(pyridin-2-ylmethyl) bipyrrolidine; tpa=tris(2-pyridylmethyl)amine). For the less reactive [Fe(OTf)2(dpa)] (dpa=dipicolylamine), this reaction occurs on a timescale similar to that of MG oxidation. Thus, the spectroscopic method presented herein provides information about the efficiency and mechanism of iron catalyzed oxidation reactions as well as about potential oxidative catalyst decomposition and chemical changes of the catalyst before or during the oxidation reaction.
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Affiliation(s)
- Yang Song
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Howard G Mayes
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Matthew J Queensen
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Eike B Bauer
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States.
| | - Cynthia M Dupureur
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States.
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17
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Sorokin AB. μ-Nitrido Diiron Phthalocyanine and Porphyrin Complexes: Unusual Structures With Interesting Catalytic Properties. ADVANCES IN INORGANIC CHEMISTRY 2017. [DOI: 10.1016/bs.adioch.2017.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Mills MR, Weitz AC, Zhang DZ, Hendrich MP, Ryabov AD, Collins TJ. A "Beheaded" TAML Activator: A Compromised Catalyst that Emphasizes the Linearity between Catalytic Activity and pK a. Inorg Chem 2016; 55:12263-12269. [PMID: 27934426 DOI: 10.1021/acs.inorgchem.6b01988] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studies of the new tetra-amido macrocyclic ligand (TAML) activator [FeIII{(Me2CNCOCMe2NCO)2CMe2}OH2]- (4) in water in the pH range of 2-13 suggest its pseudo-octahedral geometry with two nonequivalent axial H2O ligands and revealed (i) the anticipated basic drift of the first pKa of water to 11.38 due to four electron-donating methyl groups alongside (ii) its counterintuitive enhanced resistance to acid-induced iron(III) ejection from the macrocycle. The catalytic activity of 4 in the oxidation of Orange II (S) by H2O2 in the pH range of 7-12 is significantly lower than that of previously reported TAML activators, though it follows the common rate law (v/[FeIII] = kIkII[H2O2][S]/(kI[H2O2] + kII[S]) and typical pH profiles for kI and kII. At pH 7 and 25 °C the rate constants kI and kII equal 0.63 ± 0.02 and 1.19 ± 0.03 M-1 s-1, respectively. With these new values for pKa, kI and kII establishing new high and low limits, respectively, the rate constants kI and kII were correlated with pKa values of all TAML activators. The relations log k = log k0 + α × pKa were established with log k0 = 13 ± 2 and 20 ± 4 and α = -1.1 ± 0.2 and -1.8 ± 0.4 for kI and kII, respectively. Thus, the reactivity of TAML activators across four generations of catalysts is predictable through their pKa values.
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Affiliation(s)
- Matthew R Mills
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew C Weitz
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - David Z Zhang
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J Collins
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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19
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Hydrogen Peroxide Coordination to Cobalt(II) Facilitated by Second‐Sphere Hydrogen Bonding. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Wallen CM, Palatinus L, Bacsa J, Scarborough CC. Hydrogen Peroxide Coordination to Cobalt(II) Facilitated by Second-Sphere Hydrogen Bonding. Angew Chem Int Ed Engl 2016; 55:11902-6. [PMID: 27560462 DOI: 10.1002/anie.201606561] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Indexed: 11/11/2022]
Abstract
M(H2 O2 ) adducts have been postulated as intermediates in biological and industrial processes; however, only one observable M(H2 O2 ) adduct has been reported, where M is redox-inactive zinc. Herein, direct solution-phase detection of an M(H2 O2 ) adduct with a redox-active metal, cobalt(II), is described. This Co(II) (H2 O2 ) compound is made observable by incorporating second-sphere hydrogen-bonding interactions between bound H2 O2 and the supporting ligand, a trianionic trisulfonamido ligand. Thermodynamics of H2 O2 binding and decay kinetics of the Co(II) (H2 O2 ) species are described, as well as the reaction of this Co(II) (H2 O2 ) species with Group 2 cations.
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Affiliation(s)
- Christian M Wallen
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, GA, 30322, USA
| | - Lukáš Palatinus
- Department of Structure Analysis, Institute of Physics of the AS CR, Prague, Czechia
| | - John Bacsa
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, GA, 30322, USA
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21
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Jawad A, Chen Z, Yin G. Bicarbonate activation of hydrogen peroxide: A new emerging technology for wastewater treatment. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61100-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Procner M, Orzeł Ł, Stochel G, van Eldik R. Spectroscopic and kinetic evidence for redox cycling, catalase and degradation activities of Mn(III)(TPPS) in a basic aqueous peroxide medium. Chem Commun (Camb) 2016; 52:5297-300. [PMID: 27000742 DOI: 10.1039/c6cc01437b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Mn(III)(TPPS) was found to react rapidly with hydrogen peroxide in basic aqueous solution to form intermediate (TPPS)Mn(V)[double bond, length as m-dash]O and (TPPS)Mn(IV)[double bond, length as m-dash]O species which, in the presence of excess H2O2, are reduced fully back to Mn(III)(TPPS) with clear evidence for redox cycling of Mn(III)(TPPS). The system shows very strong catalase and degradation activities.
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Affiliation(s)
- M Procner
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-066 Kraków, Poland
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23
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Abstract
Metal(H2O2) complexes have been implicated in kinetic and computational studies but have never been observed. Accordingly, H2O2 has been described as a very weak ligand. We report the first metal(H2O2) adduct, which is made possible by incorporating intramolecular hydrogen-bonding interactions with bound H2O2. This Zn(II)(H2O2) complex decays in solution by a second-order process that is slow enough to enable characterization of this species by X-ray crystallography. This report speaks to the intermediacy of metal(H2O2) adducts in chemistry and biology and opens the door to exploration of these species in oxidation catalysis.
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Affiliation(s)
- Christian M Wallen
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - John Bacsa
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Christopher C Scarborough
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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24
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Tang LL, Gunderson WA, Weitz AC, Hendrich MP, Ryabov AD, Collins TJ. Activation of Dioxygen by a TAML Activator in Reverse Micelles: Characterization of an Fe(III)Fe(IV) Dimer and Associated Catalytic Chemistry. J Am Chem Soc 2015; 137:9704-15. [PMID: 26161504 DOI: 10.1021/jacs.5b05229] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Iron TAML activators of peroxides are functional catalase-peroxidase mimics. Switching from hydrogen peroxide (H2O2) to dioxygen (O2) as the primary oxidant was achieved by using a system of reverse micelles of Aerosol OT (AOT) in n-octane. Hydrophilic TAML activators are localized in the aqueous microreactors of reverse micelles where water is present in much lower abundance than in bulk water. n-Octane serves as a proximate reservoir supplying O2 to result in partial oxidation of Fe(III) to Fe(IV)-containing species, mostly the Fe(III)Fe(IV) (major) and Fe(IV)Fe(IV) (minor) dimers which coexist with the Fe(III) TAML monomeric species. The speciation depends on the pH and the degree of hydration w0, viz., the amount of water in the reverse micelles. The previously unknown Fe(III)Fe(IV) dimer has been characterized by UV-vis, EPR, and Mössbauer spectroscopies. Reactive electron donors such as NADH, pinacyanol chloride, and hydroquinone undergo the TAML-catalyzed oxidation by O2. The oxidation of NADH, studied in most detail, is much faster at the lowest degree of hydration w0 (in "drier micelles") and is accelerated by light through NADH photochemistry. Dyes that are more resistant to oxidation than pinacyanol chloride (Orange II, Safranine O) are not oxidized in the reverse micellar media. Despite the limitation of low reactivity, the new systems highlight an encouraging step in replacing TAML peroxidase-like chemistry with more attractive dioxygen-activation chemistry.
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Affiliation(s)
- Liang L Tang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - William A Gunderson
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew C Weitz
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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25
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Jawad A, Li Y, Lu X, Chen Z, Liu W, Yin G. Controlled leaching with prolonged activity for Co-LDH supported catalyst during treatment of organic dyes using bicarbonate activation of hydrogen peroxide. JOURNAL OF HAZARDOUS MATERIALS 2015; 289:165-173. [PMID: 25725338 DOI: 10.1016/j.jhazmat.2015.02.056] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 01/19/2015] [Accepted: 02/18/2015] [Indexed: 06/04/2023]
Abstract
The effluents from industries are commonly non-biodegradable and produce various hazardous intermediate products by chemical reactions that have direct impact on environment. In the present investigation, a series of Co-Mg/AL ternary LDH catalysts with fixed Mg/Al ratio were prepared by co-precipitation method. The effect of Co on the activity of the catalyst was monitored on the degradation of methylene blue (MB) as model compound at batch level using bicarbonate activation of H2O2 (BAP) system. On bench level, the best CoMgAl-4 catalyst can completely decolorize both methylene blue (MB) and methylene orange (MO) in short time, while in fixed bed, the catalyst was found stable for over 300 h with nearly 100% decolorization and excellent chemical oxygen demand (COD) removal. No leaching of Co was detected for the entire fixed experiment which may be accounted for long life stability and good activity of the catalyst. The ternary LDH catalysts were characterized by AES, XRD, FTIR, BET, and SEM for its compositional, phase structure, optical properties, textural, and surface morphology respectively. The XRD analysis confirmed characteristic pattern of hydrotalcite like structures without impurity phases. The formation of superoxide and hydroxyl radical as ROS was proposed with CoMgAl-4 by radical's scavengers.
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Affiliation(s)
- Ali Jawad
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yibing Li
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, PR China
| | - Xiaoyan Lu
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zhuqi Chen
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Weidong Liu
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, PR China
| | - Guochuan Yin
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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26
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Warner GR, Mills MR, Enslin C, Pattanayak S, Panda C, Panda TK, Gupta SS, Ryabov AD, Collins TJ. Reactivity and Operational Stability ofN-Tailed TAMLs through Kinetic Studies of the Catalyzed Oxidation of Orange II by H2O2: Synthesis and X-ray Structure of anN-Phenyl TAML. Chemistry 2015; 21:6226-33. [DOI: 10.1002/chem.201406061] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Indexed: 11/08/2022]
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27
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Kundu S, Chanda A, Thompson JVK, Diabes G, Khetan SK, Ryabov AD, Collins TJ. Rapid degradation of oxidation resistant nitrophenols by TAML activator and H2O2. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01426j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TAML and H2O2remove toxic nitrophenol pollutants producing innocuous minerals. Mechanistic studies reveal the substrate inhibition due to the reversible binding of nitrophenolate to iron(iii) of the TAML resting state.
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Affiliation(s)
- Soumen Kundu
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Arani Chanda
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Jasper V. K. Thompson
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - George Diabes
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Sushil K. Khetan
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Alexander D. Ryabov
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Terrence J. Collins
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
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28
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Makarova AS, Kudrik EV, Makarov SV, Koifman OI. Stability and catalytic properties of μ-oxo and μ-nitrido dimeric iron tetrasulfophthalocyanines in the oxidation of Orange II by tert-butylhydroperoxide. J PORPHYR PHTHALOCYA 2014. [DOI: 10.1142/s1088424614500369] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A study of catalytic activity of μ-nitrido- and μ-oxo-dimeric iron tetrasulfophthalocyanines in the oxidation of Orange II by tert-butylhydroperoxide in aqueous solutions has been performed. It is shown that though in one catalytic cycle activity of μ-oxo-dimer is higher, stability of this complex in oxidative conditions is poor. μ-nitrido-dimer combines relatively good catalytic activity with very high stability in the presence of tert-butylhydroperoxide. The mechanisms of oxidative decomposition of dimers and catalytic oxidation of Orange II have been proposed on the base of kinetic results. The products of catalytic processes are shown to be bio-degradable non-toxic small organic compounds.
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Affiliation(s)
- Anna S. Makarova
- G. A. Krestov Institute of Solution Chemistry of RAS, Academicheskaya str. 1, 153045 Ivanovo, Russia
- State University of Chemistry and Technology, Sheremetevsky av. 7, 153000 Ivanovo, Russia
| | - Evgeny V. Kudrik
- State University of Chemistry and Technology, Sheremetevsky av. 7, 153000 Ivanovo, Russia
| | - Sergei V. Makarov
- State University of Chemistry and Technology, Sheremetevsky av. 7, 153000 Ivanovo, Russia
| | - Oskar I. Koifman
- G. A. Krestov Institute of Solution Chemistry of RAS, Academicheskaya str. 1, 153045 Ivanovo, Russia
- State University of Chemistry and Technology, Sheremetevsky av. 7, 153000 Ivanovo, Russia
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29
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Etaiw SEH, Saleh DI. The organotin coordination polymer [(n-Bu3Sn)4Fe(CN)6H2O] as effective catalyst towards the oxidative degradation of methylene blue. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 117:54-60. [PMID: 23981414 DOI: 10.1016/j.saa.2013.07.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/03/2013] [Accepted: 07/21/2013] [Indexed: 06/02/2023]
Abstract
The structure of the supramolecular coordination polymer SCP 1; [(n-Bu3Sn)4Fe(CN)6H2O] consists of octahedral [Fe(CN)6](4-) building blocks which are connected by the TBPY-5 configured n-Bu3Sn(CN..)2 fragments creating 3D-network structure. Fenton and photo-Fenton oxidative discoloration of Methylene Blue (MB) has been investigated by hydrogen peroxide catalyzed with the SCP 1. The reaction exhibited pseudo first-order kinetics with respect to each of MB and H2O2. The irradiation of the reaction with UV-light enhanced the rate of MB mineralization, Kobs=0.76 h(-1). Mineralization of MB was investigated by FT-IR spectra. Disodium salt of terephthalic acid photoluminescence probing technology was carried out to identify the reactive oxygen species. The different parameters that affect MB degradation rate were evaluated. Moreover, the efficiency of recycled the SCP 1 and the mechanism of degradation of MB dye were investigated.
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Affiliation(s)
- S E H Etaiw
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
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30
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Pietrangeli D, Garramone G, Guascito MR, Pepe A, Rosa A, Ricciardi G. Synthesis, coordination chemistry, and physico-chemical properties of the 2-chloroethoxy-iron(III)(ethylthio) porphyrazine. J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424613500685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Reaction of octakis(ethylthio)porphyrazine ( H 2 OESPz ) with FeBr 2 in ClCH 2 CH 2 OH at 135 °C affords the 2-chloroethoxy-iron(III)-(ethylthio)porphyrazine, ( ClCH 2 CH 2 O ) Fe III OESPz , ( LFe III OESPz ) in good yield. The spectroscopic, redox, and coordination properties of the complex and its μ-oxo dimer derivative, [ Fe III OESPz ]2 O , are investigated and compared to those of the iron(III)porphyrin analogs.
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Affiliation(s)
- Daniela Pietrangeli
- Università della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Gaetano Garramone
- Università della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Maria Rachele Guascito
- Università del Salento, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Via per Monteroni, 73100, Lecce, Italy
| | - Antonietta Pepe
- Università della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Angela Rosa
- Università della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Giampaolo Ricciardi
- Università della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
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31
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Carboranyl-porphyrazines and derivatives for boron neutron capture therapy: From synthesis to in vitro tests. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.03.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Ryabov AD. Green Challenges of Catalysis via Iron(IV)oxo and Iron(V)oxo Species. ADVANCES IN INORGANIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-404582-8.00004-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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33
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Franke A, van Eldik R. Factors That Determine the Mechanism of NO Activation by Metal Complexes of Biological and Environmental Relevance. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201111] [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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34
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Long X, Yang Z, Wang H, Chen M, Peng K, Zeng Q, Xu A. Selective Degradation of Orange II with the Cobalt(II)–Bicarbonate–Hydrogen Peroxide System. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3013924] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuejun Long
- School of Resource and Environmental
Science, Wuhan University, Wuhan 430079,
People’s Republic of China
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Zhen Yang
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Hong Wang
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Min Chen
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Kaiyuan Peng
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Qingfu Zeng
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
| | - Aihua Xu
- Engineering Research Center
for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, People’s
Republic of China
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35
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Ibrahim AMA, Al-Ashqar SMA. Spectroscopic and kinetic studies on the degradation of methylene blue using the supramolecular coordination polymer [(Ph3Sn)4FeCN(6)] as catalyst. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 92:238-244. [PMID: 22446773 DOI: 10.1016/j.saa.2012.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 02/01/2012] [Accepted: 02/02/2012] [Indexed: 05/31/2023]
Abstract
The structure of the supramolecular coordination polymer (SCP), [(Ph(3)Sn)(4)Fe(CN)(6)], 1, consists of octahedral [Fe(CN)(6)](4-) building blocks which are connected by the TBPY-5 configured Ph(3)Sn(CN…)(2) fragments creating 3D-network structure that contains terminal cyanide groups. The catalytic behavior of the SCP 1 was utilized for Fenton and photo-Fenton degradation of methylene blue dye (MB). The plot of kinetic degradation indicates pseudo first-order rate with respect to the MB dye concentration, K(obs.)=0.071 min(-1). On the other hand, the observed rate constant of the photo catalytic degradation of MB equals to 1.45 min(-1) indicating that irradiation enhances, significantly, the rate of degradation of MB dye. Discoloration of the dye was obtained in less than 3h. Meanwhile, the conjugated structure and the phenyl rings of the MB molecule were destroyed or even broken down into small organic acids and inorganic ions, as indicated by FT-IR spectra. Disodium salt of terephthalic acid photoluminescence probing technology and radical scavenging measurements were carried out to identify the reactive oxygen species. The different parameters that affect MB degradation rate were evaluated. Moreover, the efficiency of recycled the SCP 1 and the mechanism of degradation of MB dye was investigated.
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Affiliation(s)
- Amany M A Ibrahim
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia.
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36
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Rothbart S, Ember EE, van Eldik R. Mechanistic studies on the oxidative degradation of Orange II by peracetic acid catalyzed by simple manganese(ii) salts. Tuning the lifetime of the catalyst. NEW J CHEM 2012. [DOI: 10.1039/c2nj20852k] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Schröder K, Junge K, Bitterlich B, Beller M. Fe-Catalyzed Oxidation Reactions of Olefins, Alkanes, and Alcohols: Involvement of Oxo- and Peroxo Complexes. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/978-3-642-14670-1_3] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Afanasiev P, Kudrik EV, Millet JMM, Bouchu D, Sorokin AB. High-valent diiron species generated from N-bridged diiron phthalocyanine and H2O2. Dalton Trans 2011; 40:701-10. [DOI: 10.1039/c0dt00958j] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Popescu DL, Vrabel M, Brausam A, Madsen P, Lente G, Fabian I, Ryabov AD, van Eldik R, Collins TJ. Thermodynamic, electrochemical, high-pressure kinetic, and mechanistic studies of the formation of oxo Fe(IV)-TAML species in water. Inorg Chem 2010; 49:11439-48. [PMID: 21086984 DOI: 10.1021/ic1015109] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stopped-flow kinetic studies of the oxidation of Fe(III)-TAML catalysts, [ F e{1,2-X(2)C(6)H(2)-4,5-( NCOCMe(2) NCO)(2)CMe(2)}(OH(2))](-) (1), by t-BuOOH and H(2)O(2) in water affording Fe(IV) species has helped to clarify the mechanism of the interaction of 1 with primary oxidants. The data collected for substituted Fe(III)-TAMLs at pH 6.0-13.8 and 17-45 °C has confirmed that the reaction is first order both in 1 and in peroxides. Bell-shaped pH profiles of the effective second-order rate constants k(I) have maximum values in the pH range of 10.5-12.5 depending on the nature of 1 and the selected peroxide. The "acidic" part is governed by the deprotonation of the diaqua form of 1 and therefore electron-withdrawing groups move the lower pH limit of the reactivity toward neutral pH, although the rate constants k(I) do not change much. The dissection of k(I) into individual intrinsic rate constants k(1) ([FeL(OH(2))(2)](-) + ROOH), k(2) ([FeL(OH(2))OH)](2-) + ROOH), k(3) ([FeL(OH(2))(2)](-) + ROO(-)), and k(4) ([FeL(OH(2))OH)](2-) + ROO(-)) provides a model for understanding the bell-shaped pH-profiles. Analysis of the pressure and substituent effects on the reaction kinetics suggest that the k(2) pathway is (i) more probable than the kinetically indistinguishable k(3) pathway, and (ii) presumably mechanistically similar to the induced cleavage of the peroxide O-O bond postulated for cytochrome P450 enzymes. The redox titration of 1 by Ir(IV) and electrochemical data suggest that under basic conditions the reduction potential for the half-reaction [Fe(IV)L(=O)(OH(2))](2-) + e(-) + H(2)O → [Fe(III)L(OH)(OH(2))](2-) + OH(-) is close to 0.87 V (vs NHE).
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Affiliation(s)
- Delia-Laura Popescu
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Ellis WC, Tran CT, Roy R, Rusten M, Fischer A, Ryabov AD, Blumberg B, Collins TJ. Designing green oxidation catalysts for purifying environmental waters. J Am Chem Soc 2010; 132:9774-81. [PMID: 20565079 DOI: 10.1021/ja102524v] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the synthesis, characterization, aqueous behavior, and catalytic activity of a new generation of Fe(III)-TAML (tetraamido macrocycle ligand) activators of peroxides (2), variants of [Fe{(OC)(2)(o,o'-NC(6)H(4)NCO)(2)CMe(2)}(OH(2))(-)] (2d), which have been designed to be especially suitable for purifying water of recalcitrant oxidizable pollutants. Activation of H(2)O(2) by 2 (k(I)) as a function of pH was analyzed via kinetic studies of Orange II bleaching. This was compared with the known behavior of the first generation of Fe(III)-TAMLs (1). Novel reactivity features impact the potential for oxidant activation for water purification by 2d and its aromatic ring-substituted dinitro (2e) and tetrachloro (2f) derivatives. Thus, the maximum activity for 2e occurs at pH 9, the closest yet to the EPA guidelines for drinking water (6.5-8.5), allowing 2e to rapidly activate H(2)O(2) at pH 7.7. In water, 2e has two axial water ligands with pK(a)'s of 8.4 and 10.0 (25 degrees C). The former is the lowest for all Fe(III)-TAMLs developed to date and is key to 2e's exceptional catalytic activity in neutral and slightly basic solutions. Below pH 7, 2d was found to be quite sensitive to demetalation in phosphate buffers. This was overcome by iterative design to give 2e (hydrolysis rate 2d > 100 x 2e). Mechanistic studies highlight 2e's increased stability by establishing that to demetalate 2e at a comparable rate to which H(2)PO(4)(-) demetalates 2d, H(3)PO(4) is required. A critical criterion for green catalysts for water purification is the avoidance of endocrine disruptors, which can impair aquatic life. Fe(III)-TAMLs do not alter transcription mediated by mammalian thyroid, androgen, or estrogen hormone receptors, suggesting that 2 do not bind to the receptors and reducing concerns that the catalysts might have endocrine disrupting activity.
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Affiliation(s)
- W Chadwick Ellis
- Department of Chemistry, Institute of Green Science, Mellon Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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41
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Hubbard CD, van Eldik R. Mechanistic information on some inorganic and bioinorganic reactions from volume profile analysis. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.09.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mitchell DA, Ryabov AD, Kundu S, Chanda A, Collins TJ. Oxidation of pinacyanol chloride by H2O2 catalyzed by FeIII complexed to tetraamidomacrocyclic ligand: unusual kinetics and product identification. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.492426] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Douglas A. Mitchell
- a Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
- b Department of Chemistry and the Institute for Genomic Biology , University of Illinois at Urbana-Champaign , 1206 W. Gregory Dr, Urbana, IL 61801, USA
| | - Alexander D. Ryabov
- a Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Soumen Kundu
- a Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Arani Chanda
- a Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
- c Eisai Inc. , 100 Federal St, Andover, MA 01810, USA
| | - Terrence J. Collins
- a Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
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Ryabov AD, Collins TJ. Mechanistic considerations on the reactivity of green FeIII-TAML activators of peroxides. ADVANCES IN INORGANIC CHEMISTRY 2009. [DOI: 10.1016/s0898-8838(09)00208-6] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bogel G, Schrempf H, Ortiz de Orué Lucana D. The heme-binding protein HbpS regulates the activity of the Streptomyces reticuli iron-sensing histidine kinase SenS in a redox-dependent manner. Amino Acids 2008; 37:681-91. [PMID: 18931968 DOI: 10.1007/s00726-008-0188-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2008] [Accepted: 10/01/2008] [Indexed: 12/18/2022]
Abstract
The SenS/SenR system of Streptomyces reticuli regulates the expression of the redox regulator FurS, the catalase-peroxidase CpeB and the heme-binding protein HbpS. SenS/SenR is also proposed to participate in sensing redox changes, mediated by HbpS. Here, we show in vitro that heme-free HbpS represses the autokinase activity of SenS; whereas hemin-treated HbpS considerably enhances SenS autophosphorylation under redox conditions using either H(2)O(2) or DTT. The presence of iron ions alone or in combination with H(2)O(2) or DTT also leads to significantly increased phosphorylation levels of SenS. Further comparative physiological studies using the S. reticuli WT, a S. reticuli hbpS mutant and a S. reticuli senS-senR mutant corroborates the importance of HbpS and the SenS/SenR system for resistance against high concentrations of iron ions and hemin in vivo. Hence SenS/SenR and HbpS act in concert as a novel three-component system which detects redox stress, mediated by iron ions and heme.
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Affiliation(s)
- Gabriele Bogel
- FB Biologie/Chemie, Angewandte Genetik der Mikroorganismen, Universität Osnabrück, Barbarastr. 13, 49069, Osnabrück, Germany
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Ghosh A, Mitchell DA, Chanda A, Ryabov AD, Popescu DL, Upham EC, Collins GJ, Collins TJ. Catalase-peroxidase activity of iron(III)-TAML activators of hydrogen peroxide. J Am Chem Soc 2008; 130:15116-26. [PMID: 18928252 DOI: 10.1021/ja8043689] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Exceptionally high peroxidase-like and catalase-like activities of iron(III)-TAML activators of H 2O 2 ( 1: Tetra-Amidato-Macrocyclic-Ligand Fe (III) complexes [ F e{1,2-X 2C 6H 2-4,5-( NCOCMe 2 NCO) 2CR 2}(OH 2)] (-)) are reported from pH 6-12.4 and 25-45 degrees C. Oxidation of the cyclometalated 2-phenylpyridine organometallic complex, [Ru (II)( o-C 6H 4py)(phen) 2]PF 6 ( 2) or "ruthenium dye", occurs via the equation [ Ru II ] + 1/2 H 2 O 2 + H +-->(Fe III - TAML) [ Ru III ] + H 2 O, following a simple rate law rate = k obs (per)[ 1][H 2O 2], that is, the rate is independent of the concentration of 2 at all pHs and temperatures studied. The kinetics of the catalase-like activity (H 2 O 2 -->(Fe III - TAML) H 2 O + 1/2 O 2) obeys a similar rate law: rate = k obs (cat)[ 1][H 2O 2]). The rate constants, k obs (per) and k obs (cat), are strongly and similarly pH dependent, with a maximum around pH 10. Both bell-shaped pH profiles are quantitatively accounted for in terms of a common mechanism based on the known speciation of 1 and H 2O 2 in this pH range. Complexes 1 exist as axial diaqua species [FeL(H 2O) 2] (-) ( 1 aqua) which are deprotonated to afford [FeL(OH)(H 2O)] (2-) ( 1 OH) at pH 9-10. The pathways 1 aqua + H 2O 2 ( k 1), 1 OH + H 2O 2 ( k 2), and 1 OH + HO 2 (-) ( k 4) afford one or more oxidized Fe-TAML species that further rapidly oxidize the dye (peroxidase-like activity) or a second H 2O 2 molecule (catalase-like activity). This mechanism is supported by the observations that (i) the catalase-like activity of 1 is controllably retarded by addition of reducing agents into solution and (ii) second order kinetics in H 2O 2 has been observed when the rate of O 2 evolution was monitored in the presence of added reducing agents. The performances of the 1 complexes in catalyzing H 2O 2 oxidations are shown to compare favorably with the peroxidases further establishing Fe (III)-TAML activators as miniaturized enzyme replicas with the potential to greatly expand the technological utility of hydrogen peroxide.
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Affiliation(s)
- Anindya Ghosh
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA
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Garramone G, Pietrangeli D, Ricciardi G, Conoci S, Guascito MR, Malitesta C, Cesari D, Casilli S, Giotta L, Giancane G, Valli L. Electrochemical and Spectroscopic Behavior of Iron(III) Porphyrazines in Langmuir−Schäfer Films. J Phys Chem B 2008; 112:11517-28. [DOI: 10.1021/jp803418b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gaetano Garramone
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Daniela Pietrangeli
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Giampaolo Ricciardi
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Sabrina Conoci
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Maria Rachele Guascito
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Cosimino Malitesta
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Daniela Cesari
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Serena Casilli
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Livia Giotta
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Gabriele Giancane
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
| | - Ludovico Valli
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro, 85, I-85100 Potenza, Italia, Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università del Salento, Via Arnesano 73100 Lecce, Italia, Istituto di Scienze dell’Atmosfera e del Clima, CNR, Str. Prov. Lecce-Monteroni Km 1.2, 73100 Lecce, Italia, LabonChip R&D, Microfluidic Division, CPG Group, STMicroelectronics, Stradale Primosole 50 − 95121 Catania, Italia, Dipartimento di Ingegneria dell’Innovazione, Università
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Ivanović-Burmazović I, van Eldik R. Metal complex-assisted activation of small molecules. From NO to superoxide and peroxides. Dalton Trans 2008:5259-75. [DOI: 10.1039/b805450a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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