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Farinelli G, Rebilly JN, Banse F, Cretin M, Quemener D. Assessment of new hydrogen peroxide activators in water and comparison of their active species toward contaminants of emerging concern. Sci Rep 2024; 14:9301. [PMID: 38653989 DOI: 10.1038/s41598-024-59381-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/10/2024] [Indexed: 04/25/2024] Open
Abstract
Advanced oxidation processes are the most efficient tool to thwart the overaccumulation of harmful organic compounds in the environment. In this direction bioinspired metal complexes may be a viable solution for oxidative degradations in water. However, their synthesis is often elaborated and their scalability consequently low. This study presents alternative easy-to-synthesize bioinspired metal complexes to promote degradations in water. The metals employed were iron and manganese ions, hence cheap and highly accessible ions. The complexes were tested toward Phenol, Estrone, Triclosan, Oxybenzone, Diclofenac, Carbamazepine, Erythromycin, Aspartame, Acesulfame K, Anisole and 2,4-Dinitrotoluene. The reaction favoured electron-rich compounds reaching a removal efficiency of over 90%. The central ion plays a crucial role. Specifically, Mn(II) induces a non-radical pathway while iron ions a predominant radical one (⋅OH is predominant). The iron systems resulted more versatile toward contaminants, while the manganese ones showed a higher turn-over number, hence higher catalytic behaviour.
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Affiliation(s)
- Giulio Farinelli
- Institut Européen des Membranes, IEM-UMR 5635, ENSCM, CNRS, Univeristé de Montpellier, 34090, Montpellier, France.
| | - Jean-Noël Rebilly
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS, Université Paris-Saclay, 91400, Orsay, France
| | - Frédéric Banse
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS, Université Paris-Saclay, 91400, Orsay, France
| | - Marc Cretin
- Institut Européen des Membranes, IEM-UMR 5635, ENSCM, CNRS, Univeristé de Montpellier, 34090, Montpellier, France
| | - Damien Quemener
- Institut Européen des Membranes, IEM-UMR 5635, ENSCM, CNRS, Univeristé de Montpellier, 34090, Montpellier, France.
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2
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Palmeira-Mello MV, Caballero AB, Herrera-Ramírez P, Costa AR, Santana SS, Guedes GP, Caubet A, Batista AA, Gamez P, Lanznaster M. Cobalt(III)-py 2en systems as potential carriers of β-ketoester-based ligands. J Inorg Biochem 2023; 248:112345. [PMID: 37562318 DOI: 10.1016/j.jinorgbio.2023.112345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/14/2023] [Accepted: 07/27/2023] [Indexed: 08/12/2023]
Abstract
Two cobalt(III) complexes containing different β-ketoesters, namely [CoIII(L1)(py2en)](ClO4)2·H2O (1) and [CoIII(L2)(py2en)](ClO4)2 (2) (py2en = N,N'-bis(pyridin-2-ylmethyl)ethylenediamine; L1- = methylacetoacetate; L2- = ethyl 4-chloroacetoacetate) have been prepared and investigated as prototypes of bioreductive prodrugs. The presence of β-ketoester and py2en ligands in 1 and 2, as well as the perchlorate counterions, was supported by IR spectroscopy and CHN elemental analysis. The composition molecular structure of both complexes was confirmed by NMR spectroscopy and ESI mass spectrometry. Structural information was also obtained for 2via X-ray diffraction analysis. The redox properties indicate that 1 and 2 are suitable for reduction under biological conditions. Investigation of DNA-interacting suggest that 1 and 2 bind DNA via electrostatic forces. Both complexes may be employed as possible platforms for the delivery of biologically active compounds, since their reaction with ascorbic acid in PBS at pH 6.2 and 7.4 at 37°C results in the release of the β-ketoester ligands upon Co(III)/Co(II) reduction.
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Affiliation(s)
- Marcos V Palmeira-Mello
- Departamento de Química, Universidade Federal de São Carlos (UFSCar), 13561-901 São Carlos, São Paulo, Brazil; Instituto de Química, Universidade Federal Fluminense, Outeiro S. João Batista S/N, 24020-141 Niterói, RJ, Brazil.; nanoBIC, Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Ana B Caballero
- nanoBIC, Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain.
| | - Piedad Herrera-Ramírez
- nanoBIC, Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Analu R Costa
- Departamento de Química, Universidade Federal de São Carlos (UFSCar), 13561-901 São Carlos, São Paulo, Brazil
| | - Savyo S Santana
- Instituto de Química, Universidade Federal Fluminense, Outeiro S. João Batista S/N, 24020-141 Niterói, RJ, Brazil
| | - Guilherme P Guedes
- Instituto de Química, Universidade Federal Fluminense, Outeiro S. João Batista S/N, 24020-141 Niterói, RJ, Brazil
| | - Amparo Caubet
- nanoBIC, Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Alzir Azevedo Batista
- Departamento de Química, Universidade Federal de São Carlos (UFSCar), 13561-901 São Carlos, São Paulo, Brazil
| | - Patrick Gamez
- nanoBIC, Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Mauricio Lanznaster
- Instituto de Química, Universidade Federal Fluminense, Outeiro S. João Batista S/N, 24020-141 Niterói, RJ, Brazil..
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3
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Grotemeyer EN, Parham JD, Jackson TA. Reaction landscape of a mononuclear Mn III-hydroxo complex with hydrogen peroxide. Dalton Trans 2023; 52:14350-14370. [PMID: 37767937 DOI: 10.1039/d3dt02672h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Peroxomanganese species have been proposed as key intermediates in the catalytic cycles of both manganese enzymes and synthetic catalysts. However, many of these intermediates have yet to be observed. Here, we report the formation of a series of intermediates, each generated from the reaction of the mononuclear MnIII-hydroxo complex [MnIII(OH)(dpaq2Me)]+ with hydrogen peroxide under slightly different conditions. By changing the acidity of the reaction mixture and/or the quantity of hydrogen peroxide added, we are able to control which intermediate forms. Using a combination of electronic absorption, 1H NMR, EPR, and X-ray absorption spectroscopies, as well as density functional theory (DFT) and complete active space self-consistent field (CASSCF) calculations, we formulate these intermediates as the bis(μ-oxo)dimanganese(III,IV) complex [MnIIIMnIV(μ-O)2(dpaq2Me)2]+, the MnIII-hydroperoxo complex [MnIII(OOH)(dpaq2Me)]+, and the MnIII-peroxo complex [MnIII(O2)(dpaq2Me)]. The formation of the MnIII-hydroperoxo species from the reaction of a MnIII-hydroxo complex with hydrogen peroxide mimics an elementary reaction proposed for many synthetic manganese catalysts that activate hydrogen peroxide.
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Affiliation(s)
- Elizabeth N Grotemeyer
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Joshua D Parham
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Timothy A Jackson
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
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Bashir M, Dar AA, Yousuf I. Syntheses, Structural Characterization, and Cytotoxicity Assessment of Novel Mn(II) and Zn(II) Complexes of Aroyl-Hydrazone Schiff Base Ligand. ACS OMEGA 2023; 8:3026-3042. [PMID: 36713712 PMCID: PMC9878661 DOI: 10.1021/acsomega.2c05927] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/30/2022] [Indexed: 06/15/2023]
Abstract
This work describes the syntheses, structural characterization, and biological profile of Mn(II)- and Zn(II)-based complexes 1 and 2 derived from the aroyl-hydrazone Schiff base ligand (L1). The synthesized compounds were thoroughly characterized by elemental analysis, Fourier transform infrared spectroscopy (FTIR), UV-vis, electron paramagnetic resonance (EPR), nuclear magnetic resonance (NMR), and single-crystal X-ray diffraction (s-XRD). Density functional theory (DFT) studies of complexes 1 and 2 were performed to ascertain the structural and electronic properties. Hirshfeld surface analysis was used to investigate different intermolecular interactions that define the stability of crystal lattice structures. To ascertain the therapeutic potential of complexes 1 and 2, in vitro interaction studies were carried out with ct-DNA and bovine serum albumin (BSA) using analytical and multispectroscopic techniques, and the results showed more avid binding of complex 2 than complex 1 and L1. The antioxidant potential of complexes 1 and 2 was examined against the 2,2-diphenyl picrylhydrazyl (DPPH) free radical, which revealed better antioxidant ability of the Mn(II) complex. Moreover, the antibacterial activity of synthesized complexes 1 and 2 was tested against Gram-positive and Gram-negative bacteria in which complex 2 demonstrated more effective bactericidal activity than L1 and complex 1 toward Gram-positive bacteria. Furthermore, the in vitro cytotoxicity assessment of L1 and complexes 1 and 2 was carried out against MDA-MB-231 (triple negative breast cancer) and A549 (lung) cancer cell lines. The cytotoxic results revealed that the polymeric Zn(II) complex exhibited better and selective cytotoxicity against the A549 cancer cell line as was evidenced by its low IC50 value.
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Affiliation(s)
- Masrat Bashir
- Department
of Chemistry, Aligarh Muslim University, Aligarh202002, Uttar Pradesh, India
| | - Aijaz A. Dar
- Department
of Chemistry, University of Kashmir, Hazratbal, Srinagar190006, Jammu & Kashmir, India
| | - Imtiyaz Yousuf
- Department
of Chemistry, Aligarh Muslim University, Aligarh202002, Uttar Pradesh, India
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5
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Yang G, Mikhalyova EA, Filatov AS, Kryatov SV, Rybak-Akimova EV. Manganese(II) Complexes of 1,1'-Bis[(pyridine-2-yl)methyl)]-2,2'-bipiperidine (PYBP): Synthesis, Structure, Catalytic Properties in Alkene Epoxidation with Hydrogen Peroxide, and Related Mechanistic Studies. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Johnston HM, Freire DM, Mantsorov C, Jamison N, Green KN. Manganese (III/IV) μ-Oxo Dimers and Manganese (III) Monomers with Tetraaza Macrocyclic Ligands and Historically Relevant Open-Chain Ligands. Eur J Inorg Chem 2022; 2022:e202200039. [PMID: 36277657 PMCID: PMC9585891 DOI: 10.1002/ejic.202200039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Indexed: 11/11/2022]
Abstract
The oxygen-evolving complex (OEC) located in photosystem II (PSII) of green plants is one of the best-known examples of a manganese-containing enzyme in nature, but it is also used in a range of other biological processes. OEC models incorporate two multi-dentate nitrogen-containing ligands coordinated to a bis-μ-oxo Mn(III,IV) core. Open-chain ligands were the initial scaffold used for biomimetic studies, but their macrocyclic counterparts have proven to be particularly appropriate due to their enhanced stability. Dimer and monomer complexes with such ligands have shown to be useful for a wide range of applications, which will be reviewed herein. The purpose of this review is to state with some clarity the different spectroscopic and structural characteristics of the Mn complexes formed with tetraaza macrocyclic ligands both in solution and solid-state that allow the reader to successfully identified the species involved when dealing with similar complexes of Mn.
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Affiliation(s)
- Hannah M Johnston
- Texas Christian University, Department of Chemistry and Biochemistry,2950 W. Bowie, Fort Worth, TX 76129, USA
| | - David M Freire
- Texas Christian University, Department of Chemistry and Biochemistry,2950 W. Bowie, Fort Worth, TX 76129, USA
| | - Christina Mantsorov
- Texas Christian University, Department of Chemistry and Biochemistry,2950 W. Bowie, Fort Worth, TX 76129, USA
| | - Nena Jamison
- Texas Christian University, Department of Chemistry and Biochemistry,2950 W. Bowie, Fort Worth, TX 76129, USA
| | - Kayla N Green
- Texas Christian University, Department of Chemistry and Biochemistry,2950 W. Bowie, Fort Worth, TX 76129, USA
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7
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Wang Y, Gayet F, Daran JC, Guillo P, Agustin D. Replacement of Volatile Acetic Acid by Solid SiO 2@COOH Silica (Nano)Beads for (Ep)Oxidation Using Mn and Fe Complexes Containing BPMEN Ligand. Molecules 2021; 26:5435. [PMID: 34576906 PMCID: PMC8470966 DOI: 10.3390/molecules26185435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/30/2022] Open
Abstract
Mn and Fe BPMEN complexes showed excellent reactivity in catalytic oxidation with an excess of co-reagent (CH3COOH). In the straight line of a cleaner catalytic system, volatile acetic acid was replaced by SiO2 (nano)particles with two different sizes to which pending carboxylic functions were added (SiO2@COOH). The SiO2@COOH beads were obtained by the functionalization of SiO2 with pending nitrile functions (SiO2@CN) followed by CN hydrolysis. All complexes and silica beads were characterized by NMR, infrared, DLS, TEM, X-ray diffraction. The replacement of CH3COOH by SiO2@COOH (100 times less on molar ratio) has been evaluated for (ep)oxidation on several substrates (cyclooctene, cyclohexene, cyclohexanol) and discussed in terms of activity and green metrics.
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Affiliation(s)
- Yun Wang
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205, Route de Narbonne, F-31077 Toulouse, France; (Y.W.); (F.G.); (J.-C.D.)
- Département de Chimie, Institut Universitaire de Technologie Paul Sabatier, Université de Toulouse, Av. Georges Pompidou, BP 20258, CEDEX, F-81104 Castres, France
| | - Florence Gayet
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205, Route de Narbonne, F-31077 Toulouse, France; (Y.W.); (F.G.); (J.-C.D.)
- INPT, École Nationale Supérieure des Ingénieurs en Arts Chimiques et Technologiques, CS 44362, CEDEX 4, F-31030 Toulouse, France
| | - Jean-Claude Daran
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205, Route de Narbonne, F-31077 Toulouse, France; (Y.W.); (F.G.); (J.-C.D.)
| | - Pascal Guillo
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205, Route de Narbonne, F-31077 Toulouse, France; (Y.W.); (F.G.); (J.-C.D.)
- Département de Chimie, Institut Universitaire de Technologie Paul Sabatier, Université de Toulouse, Av. Georges Pompidou, BP 20258, CEDEX, F-81104 Castres, France
| | - Dominique Agustin
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205, Route de Narbonne, F-31077 Toulouse, France; (Y.W.); (F.G.); (J.-C.D.)
- Département de Chimie, Institut Universitaire de Technologie Paul Sabatier, Université de Toulouse, Av. Georges Pompidou, BP 20258, CEDEX, F-81104 Castres, France
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8
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de Souza ICA, Santana SDS, Gómez JG, Guedes GP, Madureira J, Quintal SMDO, Lanznaster M. Investigation of cobalt(III)-phenylalanine complexes for hypoxia-activated drug delivery. Dalton Trans 2021; 49:16425-16439. [PMID: 32692333 DOI: 10.1039/d0dt01389g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Four cobalt(iii)-phenylalanine complexes, [Co(Phe)(py2en)](ClO4)2·H2O (1), [Co(Phe)(TPA)](ClO4)2·H2O (2), [Co(Phe)(py2enMe2)](ClO4)2·H2O (3) and [Co(bipy)2(Phe)](ClO4)2·H2O (4), were investigated as prototype models for hypoxia-activated delivery of melphalan - a phenylalanine derivative anticancer drug of the class of nitrogen mustards. Single crystal X-ray diffraction analysis provided the molecular structures of 1-4, as a single isomer/conformer. According with NMR and theoretical calculations, the solid-state structures of 2 and 4 are maintained in solutions. For complexes 1 and 3, though, a mixture of isomers was found in DMSO solutions: Λ-cisα(exo,exo) and Δ-cisβ1(exo,exo) for 1 (3 : 2 ratio), and Λ-cisα(exo,exo) and Δ-cisα(exo,exo) for 3 (5 : 1 ratio). Theoretical calculations point to a re-equilibration reaction of the solid-state Λ-cisβ1 isomer of 1 in solution. Electrochemical analysis revealed a correlation between the electron-donor capacity of the ancillary ligands and the redox potentials of the complexes. The potentials varied from +0.01 for 1 to +0.31 V vs. SHE for 4 in aqueous media and indicate that reduction should be achieved in biological media. The integrity of the complexes in pH 5.5 and 7.4 buffered solutions was confirmed by UV-Vis monitoring up to 24 h at 25 °C. Reduction by ascorbic acid (AA) shows an O2-dependent dissociation of the l-Phe for complexes 1-3, with higher conversion rates at pH 7.4. For complex 4, a fast dissociation of l-Phe was observed, with conversion rates unaffected by the pH and presence of O2.
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Mikata Y, Kuroda Y, Naito K, Murakami K, Yamamoto C, Yabe S, Yonemura S, Matsumoto A, Katano H. Structure and electrochemical properties of (μ-O) 2Mn 2(iii,iii) and (μ-O) 2Mn 2(iii,iv) complexes supported by pyridine-, quinoline-, isoquinoline- and quinoxaline-based tetranitrogen ligands. Dalton Trans 2021; 50:4133-4144. [PMID: 33729253 DOI: 10.1039/d1dt00184a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Seven new bis(μ-oxo)dimanganese complexes with Mn2(iii,iii) or Mn2(iii,iv) oxidation states were prepared using quinoline- and isoquinoline-based tetraamine ligands. The structures of the ligands include ethylenediamine, trans-1,2-cyclohexanediamine and tripodal amine, bearing two or three nitrogen-containing heteroaromatics. Regardless of the skeleton and number of aliphatic nitrogen atoms in the ligands, quinoline complexes stabilize the Mn2(iii,iii) oxidation state, whereas, isoquinoline ligands afford Mn2(iii,iv) complexes. A systematic comparison of the differences in structural parameters and redox potentials of a total of 14 complexes with a (μ-O)2Mn2 diamond core, which includes corresponding pyridine and quinoxaline derivatives as supporting ligands, highlights the distinct deviation of quinoline and tripodal amine motifs in this ligand series.
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Affiliation(s)
- Yuji Mikata
- Department of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women's University, Nara 630-8506, Japan.
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10
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Mikata Y, Murakami K, Ochi A, Nakagaki F, Naito K, Matsumoto A, Mitsuhashi R, Mikuriya M. Conversion of (µ-OH)2Mn2(II,II) complex to (µ-O)2Mn2(III,III) core supported by a quinoxaline-based tetranitrogen ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Heydari R, Motieiyan E, Aliabadi A, Abdolmaleki S, Ghadermazi M, Yarmohammadi N. Synthesis, crystallographic studies, electrochemical and in vitro cytotoxicity properties of two Mn(II) and U(IV) complexes containing dipicolinic acid and 4-dimethylaminopyridine. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114477] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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12
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Water-oxidizing complex in Photosystem II: Its structure and relation to manganese-oxide based catalysts. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213183] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Freire DM, Beeri D, Pota K, Johnston HM, Palacios P, Pierce BS, Sherman BD, Green KN. Hydrogen Peroxide Disproportionation with Manganese Macrocyclic Complexes of Cyclen and Pyclen. Inorg Chem Front 2020; 7:1573-1582. [PMID: 32457818 DOI: 10.1039/c9qi01509d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The catalase family of enzymes, which include a variety with a binuclear manganese active site, mitigate the risk from reactive oxygen species by facilitating the disproportionation of hydrogen peroxide into molecular oxygen and water. In this work, hydrogen peroxide disproportionation using complexes formed between manganese and cyclen or pyclen were investigated due to the spectroscopic similarities with the native MnCAT enzyme. Potentiometric titrations were used to construct speciation diagrams that identify the manganese complex compositions at different pH values. Each complex behaves as a functional mimic of catalase enzymes. UV-visible spectroscopic investigations of the H2O2 decomposition reaction yielded information about the structure of the initial catalyst and intermediates that include monomeric and dimeric species. The results indicate that rigidity imparted by the pyridine ring of pyclen is a key factor in increased TON and TOF values measured compared to cyclen.
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Affiliation(s)
- David M Freire
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
| | - Debora Beeri
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
| | - Kristof Pota
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
| | - Hannah M Johnston
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
| | - Philip Palacios
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019
| | - Brad S Pierce
- Department of Chemistry and Biochemistry, University of Alabama, 250 Hackberry Lane, Box 870336 Tuscaloosa, AL 35487
| | - Benjamin D Sherman
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
| | - Kayla N Green
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 W.Bowie, Fort Worth, TX 76129, United States
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Affiliation(s)
- Vishakha Kaim
- Department of Chemistry; University of Delhi; 110007 Delhi India
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15
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Kumar A, Sengupta A, Demeshko S, Mukherjee R. Structure, magnetism and reactivity of a {MnIII(μ-O)2MnIV}3+ core towards oxidation of phenols. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.06.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Roozbahani P, Salehi M, Malekshah RE, Kubicki M. Synthesis, crystal structure, electrochemical behavior and docking molecular of poly-nuclear metal complexes of Schiff base ligand derived from 2-amino benzyl alcohol. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Areas ES, de Assunção Paiva JL, Ribeiro FV, Pereira TM, Kummerle AE, Silva H, Guedes GP, Cellis do Nascimento AC, da Silva Miranda F, Neves AP. Redox-Activated Drug Delivery Properties and Cytotoxicity of Cobalt Complexes Based on a Fluorescent Coumarin-β-Keto Ester Hybrid. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Esther Saraiva Areas
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | | | - Felipe Vitório Ribeiro
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Thiago Moreira Pereira
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Arthur Eugen Kummerle
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Heveline Silva
- Departamento de Química; Universidade Federal de Minas Gerais; Av. Antônio Carlos, 6627 - Pampulha Belo Horizonte Minas Gerais CEP 31270-901 Brasil
| | - Guilherme Pereira Guedes
- Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho, Centro, Niterói Rio de Janeiro CEP 24020-150 Brasil
| | | | - Fabio da Silva Miranda
- Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho, Centro, Niterói Rio de Janeiro CEP 24020-150 Brasil
| | - Amanda Porto Neves
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
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18
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da Silva AFM, de Mello MVP, Gómez JG, Ferreira GB, Lanznaster M. Investigation of Cobalt(III)-Tetrachlorocatechol Complexes as Models for Catechol-Based Anticancer Prodrugs. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | | | - Javier G. Gómez
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
| | - Glaucio Braga Ferreira
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
| | - Mauricio Lanznaster
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
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19
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Palopoli C, Ferreyra J, Conte-Daban A, Richezzi M, Foi A, Doctorovich F, Anxolabéhère-Mallart E, Hureau C, Signorella SR. Insights into Second-Sphere Effects on Redox Potentials, Spectroscopic Properties, and Superoxide Dismutase Activity of Manganese Complexes with Schiff-Base Ligands. ACS OMEGA 2019; 4:48-57. [PMID: 31459311 PMCID: PMC6649300 DOI: 10.1021/acsomega.8b03018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/20/2018] [Indexed: 05/04/2023]
Abstract
Six Mn-Schiff base complexes, [Mn(X-salpn)]0/+ (salpn = 1,3-bis(sal-ic-ylidenamino)propane, X = H [1], 5-Cl [2], 2,5-F2 [3], 3,5-Cl2 [4], 5-NO2 [5], 3,5-(NO2)2 [6]), were synthesized and characterized in solution, and second-sphere effects on their electrochemical and spectroscopic properties were analyzed. The six complexes catalyze the dismutation of superoxide with catalytic rate constants in the range 0.65 to 1.54 × 106 M-1 s-1 obtained through the nitro blue tetrazolium photoreduction inhibition superoxide dismutases assay, in aqueous medium of pH 7.8. In solution, these compounds possess two labile solvent molecules in the axial positions favoring coordination of the highly nucleophilic O2 •- to the metal center. Even complex 5, [Mn(5-(NO2)salpn) (OAc) (H2O)], with an axial acetate in the solid state, behaves as a 1:1 electrolyte in methanolic solution. Electron paramagnetic resonance and UV-vis monitoring of the reaction of [Mn(X-salpn)]0/+ with KO2 demonstrates that in diluted solutions these complexes behave as catalysts supporting several additions of excess O2 •-, but at high complex concentrations (≥0.75 mM) catalyst self-inhibition occurs by the formation of a catalytically inactive dimer. The correlation of spectroscopic, electrochemical, and kinetics data suggest that second-sphere effects control the oxidation states of Mn involved in the O2 •- dismutation cycle catalyzed by complexes 1-6 and modulate the strength of the Mn-substrate adduct for electron-transfer through an inner-sphere mechanism.
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Affiliation(s)
- Claudia Palopoli
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Joaquín Ferreyra
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | | | - Micaela Richezzi
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Ana Foi
- Departamento
de Química Inorgánica, Analítica y Química
Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Buenos Aires, 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 2, C1428EHA Buenos Aires, Argentina
| | - Elodie Anxolabéhère-Mallart
- Laboratoire
d’Electrochimie Moléculaire UMR CNRS-P7 7591, Université
Paris Diderot-Paris, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France
| | - Christelle Hureau
- LCC-CNRS,
Université de Toulouse, 205 route de Narbonne, 31077 Toulouse, France
| | - Sandra R. Signorella
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
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20
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Maruyama T, Namekata A, Sakiyama H, Kikukawa Y, Hayashi Y. Redox active mixed-valence hexamanganese double-cubane complexes supported by tetravanadates. NEW J CHEM 2019. [DOI: 10.1039/c9nj02437a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A double-cubane-type hexamanganese complex that is reminiscent of the structure of an oxygen evolution center was synthesized using a polyoxovanadate ligand.
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Affiliation(s)
- Tatsuya Maruyama
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Akimi Namekata
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Hiroshi Sakiyama
- Department of Science
- Faculty of Science
- Yamagata University
- Yamagata 990-8560
- Japan
| | - Yuji Kikukawa
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yoshihito Hayashi
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
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21
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Kankanamalage PHA, Ekanayake DM, Singh N, de Morais ACP, Mazumder S, Verani CN, Mukherjee A, Lanznaster M. Effect of ligand substituents on nickel and copper [N4] complexes: electronic and redox behavior, and reactivity towards protons. NEW J CHEM 2019. [DOI: 10.1039/c9nj01283d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand substituents have a major effect on the redox potentials, catalytic efficiency and robustness of the complexes in HER.
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Affiliation(s)
| | | | - Nirupama Singh
- Department of Chemistry
- University of Alabama
- Huntsville
- USA
| | | | - Shivnath Mazumder
- Department of Chemistry
- Indian Institute of Technology Jammu
- Jammu (J&K)
- India
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22
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Rationally designed mimics of antioxidant manganoenzymes: Role of structural features in the quest for catalysts with catalase and superoxide dismutase activity. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Non-redox metal ions accelerated oxygen atom transfer by Mn-Me3tacn complex with H2O2 as oxygen resource. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.01.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Parham JD, Wijeratne GB, Rice DB, Jackson TA. Spectroscopic and Structural Characterization of Mn(III)-Alkylperoxo Complexes Supported by Pentadentate Amide-Containing Ligands. Inorg Chem 2018; 57:2489-2502. [DOI: 10.1021/acs.inorgchem.7b02793] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joshua D. Parham
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66045, United States
| | - Gayan B. Wijeratne
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66045, United States
| | - Derek B. Rice
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66045, United States
| | - Timothy A. Jackson
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66045, United States
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25
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Okeke U, Gultneh Y, Butcher RJ. (Aceto-nitrile-κ N)aqua-[ N, N'-bis-(pyridin-2-yl-methyl)ethane-1,2-di-amine-κ 4N, N', N'', N''']zinc(II) perchlorate. Acta Crystallogr E Crystallogr Commun 2017; 73:1568-1571. [PMID: 29250383 PMCID: PMC5730320 DOI: 10.1107/s2056989017013603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/22/2017] [Indexed: 11/10/2022]
Abstract
The structure of the title compound, [Zn(C14H18N4)(C2H3N)(H2O)](ClO4)2, contains a six-coordinate cation consisting of the tetra-dentate bis-picen ligand, coordinated water, and coordinated aceto-nitrile, with the latter two ligands adopting a cis configuration. There are two formula units in the asymmetric unit. Both cations show almost identical structural features with the bis-picen ligand adopting the more common cis-β conformation. One of the four perchlorate anions is disordered over two positions, with occupancies of 0.9090 (15) and 0.0910 (15). There is extensive inter-ionic hydrogen bonding between the perchlorate anions and O-H and N-H groups in the cations, including a bifurcated hydrogen bond between an N-H group and two O atoms of one perchlorate anion. As a result of this extended hydrogen-bond network, the ions are linked into a complex three-dimensional array.
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Affiliation(s)
- Ugochukwu Okeke
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| | - Yilma Gultneh
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
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26
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Promoting a non-heme manganese complex catalyzed oxygen transfer reaction by both lewis acid and Brønsted acid: Similarities and distinctions. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.05.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Bohn A, Sénéchal‐David K, Vanoutryve J, Guillot R, Rivière E, Banse F. Synthesis and Characterization of Iron(II) Complexes with a BPMEN‐Type Ligand Bearing π‐Accepting Nitro Groups. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Antoine Bohn
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Katell Sénéchal‐David
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Jonathan Vanoutryve
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Frédéric Banse
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
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28
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Li YY, Ye K, Siegbahn PEM, Liao RZ. Mechanism of Water Oxidation Catalyzed by a Mononuclear Manganese Complex. CHEMSUSCHEM 2017; 10:903-911. [PMID: 27925413 DOI: 10.1002/cssc.201601538] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 12/01/2016] [Indexed: 06/06/2023]
Abstract
The design and synthesis of biomimetic Mn complexes to catalyze oxygen evolution is a very appealing goal because water oxidation in nature employs a Mn complex. Recently, the mononuclear Mn complex [LMnII (H2 O)2 ]2+ [1, L=Py2 N(tBu)2 , Py=pyridyl] was reported to catalyze water oxidation electrochemically at an applied potential of 1.23 V at pH 12.2 in aqueous solution. Density functional calculations were performed to elucidate the mechanism of water oxidation promoted by this catalyst. The calculations showed that 1 can lose two protons and one electron readily to produce [LMnIII (OH)2 ]+ (2), which then undergoes two sequential proton-coupled electron-transfer processes to afford [LMnV OO]+ (4). The O-O bond formation can occur through direct coupling of the two oxido ligands or through nucleophilic attack of water. These two mechanisms have similar barriers of approximately 17 kcal mol-1 . The further oxidation of 4 to generate [LMnVI OO]2+ (5), which enables O-O bond formation, has a much higher barrier. In addition, ligand degradation by C-H activation has a similar barrier to that for the O-O bond formation, and this explains the relatively low turnover number of this catalyst.
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Affiliation(s)
- Ying-Ying Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Ke Ye
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Per E M Siegbahn
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691, Stockholm, Sweden
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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29
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da Silva AFM, Pinheiro CB, Camargos Resende JAL, Lanznaster M. Evaluation of Iron(III)-N(amine)2N(py)2 complexes as potential bioreductively activated carriers for naphthoquinone-based drugs. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Sankaralingam M, Vadivelu P, Palaniandavar M. Novel nickel(ii) complexes of sterically modified linear N4 ligands: effect of ligand stereoelectronic factors and solvent of coordination on nickel(ii) spin-state and catalytic alkane hydroxylation. Dalton Trans 2017; 46:7181-7193. [DOI: 10.1039/c7dt00576h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The donor atom type and diazacyclo backbone of the ligands and solvent of coordination dictate the Ni(ii) spin state (4, LS; 1–3, 5, HS) and catalytic activity of complexes.
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Affiliation(s)
| | - Prabha Vadivelu
- Chemical Sciences and Technology Division
- National Institute for Interdisciplinary Science and Technology
- CSIR
- Trivandrum-695019
- India
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31
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Singh N, Niklas J, Poluektov O, Van Heuvelen KM, Mukherjee A. Mononuclear nickel (II) and copper (II) coordination complexes supported by bispicen ligand derivatives: Experimental and computational studies. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.09.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Palopoli C, Gómez G, Foi A, Doctorovich F, Mallet-Ladeira S, Hureau C, Signorella S. Dimerization, redox properties and antioxidant activity of two manganese(III) complexes of difluoro- and dichloro-substituted Schiff-base ligands. J Inorg Biochem 2016; 167:49-59. [PMID: 27907863 DOI: 10.1016/j.jinorgbio.2016.11.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/08/2016] [Accepted: 11/16/2016] [Indexed: 11/16/2022]
Abstract
Two mononuclear MnIII complexes [Mn(3,5-F2salpn)(H2O)2][B(C6H5)4]·2H2O (1·2H2O) and [Mn(3,5-Cl2salpn)(OAc)(H2O)]·H2O (2·H2O), where H2salpn=1,3-bis(salicylidenamino)propane, have been prepared and characterized. The crystal structure of 1·H2O shows that this complex forms μ-aqua dimers with a short Mn⋯Mn distance of 4.93Å. Under anaerobic conditions, the two complexes are stable in solution and possess trans-diaxial symmetry with the tetradentate Schiff base ligand symmetrically arranged in the equatorial plane. When left in air, these complexes slowly dimerize to yield high-valent [MnIV2(3,5-X2-salpn)2(μ-O)2] in which each X2-salpn ligand wraps the two Mn ions. This process is favored in basic medium where the deprotonation of the bound water molecule is concomitant with air oxidation. The two complexes catalyze the dismutation of superoxide (superoxide dismutase (SOD) activity) and peroxide (catalase (CAT) activity) in basic medium. The phenyl-ring substituents play an important role on the CAT reaction but have little effect on SOD activity. Kinetics and spectroscopic results indicate that 1 and 2 catalyze H2O2 disproportionation through a cycle involving MnIII2 and MnIV2 dimers, unlike related complexes with a more rigid and smaller chelate ring, which employ MnIII/MnVO monomers.
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Affiliation(s)
- Claudia Palopoli
- IQUIR (Instituto de Química Rosario), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Guillermo Gómez
- IQUIR (Instituto de Química Rosario), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Ana Foi
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires C1428EHA, 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 2, Buenos Aires C1428EHA, Argentina
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse, FR 2599, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) and UPS, INPT, LCC, Université de Toulouse, 205 route de Narbonne, F-31077 Toulouse, France
| | - Sandra Signorella
- IQUIR (Instituto de Química Rosario), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina.
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33
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Firmo RN, de Souza ICA, Miranda FDS, Pinheiro CB, Resende JALC, Lanznaster M. A new ligand H4Lox and its iron(III) complex as a platform for the development of heterotrimetallic complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.06.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Gao E, Ding Y, Sun N, Zhang S, Qiu X, Zhan Y, Zhu M. Synthesis, characterization, DNA interaction, apoptosis and molecular docking of Cu(II) and Mn(II) complexes with endo
-norbornene-cis
-5,6-dicarboxylic acid. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Enjun Gao
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Yuqing Ding
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Na Sun
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Shaozhong Zhang
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Xue Qiu
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Yang Zhan
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Mingchang Zhu
- International Key Laboratory of Liaoning Inorganic Molecule-Based Chemicals and Department of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
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35
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Wang JW, Sahoo P, Lu TB. Reinvestigation of Water Oxidation Catalyzed by a Dinuclear Cobalt Polypyridine Complex: Identification of CoOx as a Real Heterogeneous Catalyst. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00798] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jia-Wei Wang
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
| | - Pathik Sahoo
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
| | - Tong-Bu Lu
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
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36
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Sankaralingam M, Jeon SH, Lee YM, Seo MS, Ohkubo K, Fukuzumi S, Nam W. An amphoteric reactivity of a mixed-valent bis(μ-oxo)dimanganese(III,IV) complex acting as an electrophile and a nucleophile. Dalton Trans 2016; 45:376-83. [PMID: 26620273 DOI: 10.1039/c5dt04292e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A mixed-valent bis(μ-oxo)dimanganese(III,IV) complex, [(dpaq)Mn(III)(O)2Mn(IV)(dpaq)](+) (1), was prepared by reacting a hydroxomanganese(III) complex, [(dpaq)Mn(III)(OH)](+), with hydrogen peroxide in the presence of triethylamine. The mixed-valent bis(μ-oxo)dimanganese(III,IV) complex (1) was well characterised by UV-vis, EPR and CSI-MS techniques. The electrophilic reactivity of 1 was investigated in the oxidation of 2,6-di-tert-butylphenol derivatives by 1, in which the relative rate afforded a good Hammett correlation with a ρ value of -1.0. The nucleophilic character of 1 was then investigated in aldehyde deformylation reactions, using 2-phenylpropionaldehyde (2-PPA) and benzaldehyde derivatives as substrates. In contrast to the case of the reaction of 1 with 2,6-di-tert-butylphenol derivatives, a positive ρ value of 0.89 was obtained in the Hammett plot, demonstrating that the bis(μ-oxo)-dimanganese(III,IV) complex is an active nucleophilic oxidant. Thus, 1 exhibited an amphoteric reactivity in both electrophilic and nucleophilic oxidative reactions.
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Affiliation(s)
| | - So Hyun Jeon
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
| | - Mi Sook Seo
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
| | - Kei Ohkubo
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea. and Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA and SENTAN, Japan Science and Technology Agency (JST), 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea. and Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA and SENTAN, Japan Science and Technology Agency (JST), 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
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37
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Luo GY, Huang HH, Wang JW, Lu TB. Further Investigation of a Nickel-Based Homogeneous Water Oxidation Catalyst with Two cis Labile Sites. CHEMSUSCHEM 2016; 9:485-491. [PMID: 26785219 DOI: 10.1002/cssc.201501474] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/10/2015] [Indexed: 06/05/2023]
Abstract
The reaction of N,N'-dimethyl-N,N'-bis(pyridin-2-ylmethyl)-1,2-diaminoethane ligand (L) with Ni(ClO4)2 ⋅6 H2O generated a complex of [NiL(H2O)2](ClO4)2 (1) with two cis labile sites occupied by two coordinated H2O molecules, which can homogeneously electrocatalyze water oxidation in pH 6.5 acetate (OAc(-)) buffer at room temperature. The catalytic mechanism was studied by electrochemical experiments and density functional theory calculations to elucidate the following steps: (a) one of two water molecules in 1 is exchanged by OAc(-) to generate [NiL(H2O)(OAc)](+) when dissolved in OAc(-) buffer, (b) Ni(II) is directly oxidized to Ni(IV) and OAc(-) is replaced with OH(-) to form [Ni(IV) L(OH)2 ](2+), and (c) a peroxide intermediate is formed through the intramolecular O-O coupling in the presence of OAc(-), which undergoes further oxidation to release O2.
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Affiliation(s)
- Gang-Yi Luo
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Hai-Hua Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jia-Wei Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Tong-Bu Lu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
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38
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Choe C, Yang L, Lv Z, Mo W, Chen Z, Li G, Yin G. Redox-inactive metal ions promoted the catalytic reactivity of non-heme manganese complexes towards oxygen atom transfer. Dalton Trans 2016; 44:9182-92. [PMID: 25904197 DOI: 10.1039/c4dt03993a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Redox-inactive metal ions can modulate the reactivity of redox-active metal ions in a variety of biological and chemical oxidations. Many synthetic models have been developed to help address the elusive roles of these redox-inactive metal ions. Using a non-heme manganese(II) complex as the model, the influence of redox-inactive metal ions as a Lewis acid on its catalytic efficiency in oxygen atom transfer was investigated. In the absence of redox-inactive metal ions, the manganese(II) catalyst is very sluggish, for example, in cyclooctene epoxidation, providing only 9.9% conversion with 4.1% yield of epoxide. However, addition of 2 equiv. of Al(3+) to the manganese(II) catalyst sharply improves the epoxidation, providing up to 97.8% conversion with 91.4% yield of epoxide. EPR studies of the manganese(II) catalyst in the presence of an oxidant reveal a 16-line hyperfine structure centered at g = 2.0, clearly indicating the formation of a mixed valent di-μ-oxo-bridged diamond core, Mn(III)-(μ-O)2-Mn(IV). The presence of a Lewis acid like Al(3+) causes the dissociation of this diamond Mn(III)-(μ-O)2-Mn(IV) core to form monomeric manganese(iv) species which is responsible for improved epoxidation efficiency. This promotional effect has also been observed in other manganese complexes bearing various non-heme ligands. The findings presented here have provided a promising strategy to explore the catalytic reactivity of some di-μ-oxo-bridged complexes by adding non-redox metal ions to in situ dissociate those dimeric cores and may also provide clues to understand the mechanism of methane monooxygenase which has a similar diiron diamond core as the intermediate.
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Affiliation(s)
- Cholho Choe
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Luoyu Road 1037, Wuhan 430074, PR China.
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39
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de Souza ICA, Faro LV, Pinheiro CB, Gonzaga DTG, da Silva FDC, Ferreira VF, Miranda FDS, Scarpellini M, Lanznaster M. Investigation of cobalt(iii)-triazole systems as prototypes for hypoxia-activated drug delivery. Dalton Trans 2016; 45:13671-4. [DOI: 10.1039/c6dt02456d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel cobalt(iii)-triazole system was developed for hypoxia-activated drug delivery with an [O2]-dependent reduction to cobalt(ii) followed by ligand dissociation.
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40
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Porter D, Poon BML, Rutledge PJ. Iron complexes of tetramine ligands catalyse allylic hydroxyamination via a nitroso-ene mechanism. Beilstein J Org Chem 2015; 11:2549-56. [PMID: 26734101 PMCID: PMC4685922 DOI: 10.3762/bjoc.11.275] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/24/2015] [Indexed: 12/17/2022] Open
Abstract
Iron(II) complexes of the tetradentate amines tris(2-pyridylmethyl)amine (TPA) and N,N'-bis(2-pyridylmethyl)-N,N'-dimethylethane-1,2-diamine (BPMEN) are established catalysts of C-O bond formation, oxidising hydrocarbon substrates via hydroxylation, epoxidation and dihydroxylation pathways. Herein we report the capacity of these catalysts to promote C-N bond formation, via allylic amination of alkenes. The combination of N-Boc-hydroxylamine with either FeTPA (1 mol %) or FeBPMEN (10 mol %) converts cyclohexene to the allylic hydroxylamine (tert-butyl cyclohex-2-en-1-yl(hydroxy)carbamate) in moderate yields. Spectroscopic studies and trapping experiments suggest the reaction proceeds via a nitroso-ene mechanism, with involvement of a free N-Boc-nitroso intermediate. Asymmetric induction is not observed using the chiral tetramine ligand (+)-(2R,2'R)-1,1'-bis(2-pyridylmethyl)-2,2'-bipyrrolidine ((R,R')-PDP).
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Affiliation(s)
- David Porter
- School of Chemistry F11, The University of Sydney, NSW 2006, Australia
| | - Belinda M-L Poon
- School of Chemistry F11, The University of Sydney, NSW 2006, Australia
| | - Peter J Rutledge
- School of Chemistry F11, The University of Sydney, NSW 2006, Australia
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41
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Zhu A, Luo Z, Ding C, Li B, Zhou S, Wang R, Tian Y. A two-photon "turn-on" fluorescent probe based on carbon nanodots for imaging and selective biosensing of hydrogen sulfide in live cells and tissues. Analyst 2015; 139:1945-52. [PMID: 24575421 DOI: 10.1039/c3an02086j] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Determination of hydrogen sulfide (H2S) in live cells and tissues is still a challenge for evaluating the key roles that H2S plays in physiological and pathological processes. In this work, a "turn-on" two-photon fluorescent (TPF) sensor for H2S is developed, in which carbon nanodot (C-Dot) was employed as a two-photon fluorophore due to its large two-photon absorption cross-section (σ), and AE-TPEA-Cu(2+) complex [AE-TPEA = N-(2-aminoethyl)-N,N,N'-tris(pyridin-2-ylmethyl)ethane-1,2-diamine] was first designed as a specific receptor for H2S. The fluorescence of C-Dot conjugated with AE-TPEA (C-Dot-TPEA) was quenched upon the addition of Cu(2+). Then, the fluorescence was restored after the addition of H2S, because Cu(2+) could be released from TPEA binding site when H2S interacted with the Cu(2+) ion. The designed C-Dot-TPEA-Cu(2+) fluorescent sensor exhibited high specificity for H2S over biothiols, sulfur-containing compounds, reactive oxygen species (ROS), and other biological interferences. Meanwhile, a broad linear range from 5 μM to 100 μM was obtained and the detection limit was achieved to 0.7 μM. In addition, the C-Dot-based TPF probe exhibited bright two-photon fluorescence, favourable photostability against light illumination and pH change, and low cytotoxicity. Accordingly, the nanohybridized TPF sensor with high selectivity and sensitivity, as well as the fascinating properties of C-Dot themselves, successfully provided a new way for TPF imaging and biosensing of H2S in live cells and tissues. We believe this is the first report of TPF imaging and biosensing of H2S in live cells and tissues using a specially engineered C-Dot-based nanosystem.
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Affiliation(s)
- Anwei Zhu
- Department of Chemistry, Tongji University, Shanghai 200092, China.
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42
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Ledesma GN, Eury H, Anxolabéhère-Mallart E, Hureau C, Signorella SR. A new mononuclear manganese(III) complex of an unsymmetrical hexadentate N3O3 ligand exhibiting superoxide dismutase and catalase-like activity: synthesis, characterization, properties and kinetics studies. J Inorg Biochem 2015; 146:69-76. [PMID: 25771435 DOI: 10.1016/j.jinorgbio.2015.02.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/20/2015] [Accepted: 02/20/2015] [Indexed: 11/28/2022]
Abstract
A mononuclear Mn(III) complex MnL·4H2O (H3L=1-[N-(2-pyridylmethyl),N-(2-hydroxybenzyl)amino]-3-[N'-(2-hydroxybenzyl),N'-(4-methylbenzyl)amino]propan-2-ol) has been prepared and characterized. This complex catalyzes the dismutation of superoxide efficiently, with catalytic rate constant kcat=1.7×10(6)M(-1)s(-1) and IC50 1.26μM, obtained through the nitro blue tetrazolium photoreduction inhibition superoxide dismutase assay, in aqueous solution of pH7.8. MnL is also able to disproportionate more than 300 equivalents of H2O2 in CH3CN, with initial rate of H2O2 decomposition given by ri=kcat [MnL](2) [H2O2] and kcat=1.32(2)mM(-2)min(-1). The accessibility of the Mn(IV) state (E(p)=0.53V vs. saturated calomel electrode), suggests MnL employs a high-valent catalytic cycle to decompose O2(-) and H2O2.
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Affiliation(s)
- Gabriela N Ledesma
- IQUIR (Instituto de Química Rosario), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, (S2002LRK), Rosario, Argentina
| | - Hélène Eury
- Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France; Université de Toulouse; UPS, INPT, LCC, F-31077 Toulouse, France
| | - Elodie Anxolabéhère-Mallart
- Laboratoire d'Electrochimie Moléculaire UMR CNRS-P7 7591 Université Paris Diderot-Paris, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France
| | - Christelle Hureau
- Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France; Université de Toulouse; UPS, INPT, LCC, F-31077 Toulouse, France
| | - Sandra R Signorella
- IQUIR (Instituto de Química Rosario), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, (S2002LRK), Rosario, Argentina.
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43
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Manrique E, Poater A, Fontrodona X, Solà M, Rodríguez M, Romero I. Reusable manganese compounds containing pyrazole-based ligands for olefin epoxidation reactions. Dalton Trans 2015; 44:17529-43. [DOI: 10.1039/c5dt02787j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New robust and effective Mn-pyrazolyl catalysts for olefin epoxidation in [bmim]PF6 : CH3CN, with good activity even after several reuses, are described. The cis → trans isomerization in the epoxidation of cis-β-methylstyrene is confirmed through computational calculations.
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Affiliation(s)
- Ester Manrique
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
| | - Albert Poater
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
| | - Xavier Fontrodona
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
| | - Miquel Solà
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
| | - Montserrat Rodríguez
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
| | - Isabel Romero
- Departament de Química
- Institut de Química Computacional i Catàlisi and Serveis Tècnics de Recerca
- Universitat de Girona
- E-17071 Girona
- Spain
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44
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Chen Z, Yang L, Choe C, Lv Z, Yin G. Non-redox metal ion promoted oxygen transfer by a non-heme manganese catalyst. Chem Commun (Camb) 2015; 51:1874-7. [DOI: 10.1039/c4cc07981g] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-redox metal ions can help the dissociation of the dinuclear Mn2(iii,iv) core, leading to sharp improvement in its oxygen transfer efficiency.
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Affiliation(s)
- Zhuqi Chen
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- Wuhan 430074
| | - Ling Yang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- Wuhan 430074
| | - Cholho Choe
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- Wuhan 430074
| | - Zhanao Lv
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- Wuhan 430074
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Key Laboratory for Large-Format Battery Materials and System
- Ministry of Education
- Wuhan 430074
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45
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Zhang Z, Coats KL, Chen Z, Hubin TJ, Yin G. Influence of Calcium(II) and Chloride on the Oxidative Reactivity of a Manganese(II) Complex of a Cross-Bridged Cyclen Ligand. Inorg Chem 2014; 53:11937-47. [DOI: 10.1021/ic501342c] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Zhan Zhang
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Hubei
Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Katherine L. Coats
- Department
of Chemistry and Physics, Southwestern Oklahoma State University, 100
Campus Drive, Weatherford, Oklahoma 73096, United States
| | - Zhuqi Chen
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Hubei
Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Timothy J. Hubin
- Department
of Chemistry and Physics, Southwestern Oklahoma State University, 100
Campus Drive, Weatherford, Oklahoma 73096, United States
| | - Guochuan Yin
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Hubei
Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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46
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Panja A. Selective coordination of multidentate ligands in manganese(II) complexes: Syntheses, structures and phenoxazinone synthase mimicking activity. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Lee WT, Muñoz SB, Dickie DA, Smith JM. Ligand modification transforms a catalase mimic into a water oxidation catalyst. Angew Chem Int Ed Engl 2014; 53:9856-9. [PMID: 25044487 DOI: 10.1002/anie.201402407] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 06/17/2014] [Indexed: 02/02/2023]
Abstract
The catalytic reactivity of the high-spin Mn(II) pyridinophane complexes [(Py2NR2)Mn(H2O)2](2+) (R=H, Me, tBu) toward O2 formation is reported. With small macrocycle N-substituents (R=H, Me), the complexes catalytically disproportionate H2O2 in aqueous solution; with a bulky substituent (R=tBu), this catalytic reaction is shut down, but the complex becomes active for aqueous electrocatalytic H2O oxidation. Control experiments are in support of a homogeneous molecular catalyst and preliminary mechanistic studies suggest that the catalyst is mononuclear. This ligand-controlled switch in catalytic reactivity has implications for the design of new manganese-based water oxidation catalysts.
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Affiliation(s)
- Wei-Tsung Lee
- Department of Chemistry, Indiana University, 800 East Kirkwood Ave., Bloomington, IN 47405 (USA)
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48
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Lee WT, Muñoz SB, Dickie DA, Smith JM. Ligand Modification Transforms a Catalase Mimic into a Water Oxidation Catalyst. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402407] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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49
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Rich J, Manrique E, Molton F, Duboc C, Collomb MN, Rodríguez M, Romero I. Catalytic Activity of Chloro and Triflate Manganese(II) Complexes in Epoxidation Reactions: Reusable Catalytic Systems for Alkene Epoxidation. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Bustamante FL, Miranda FS, Castro FA, Resende JA, Pereira MD, Lanznaster M. A study on the properties and reactivity of naphthoquinone–cobalt(III) prototypes for bioreductive prodrugs. J Inorg Biochem 2014; 132:37-44. [DOI: 10.1016/j.jinorgbio.2013.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 11/14/2013] [Accepted: 11/19/2013] [Indexed: 12/17/2022]
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