1
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Lionetti D, Suseno S, Shiau AA, de Ruiter G, Agapie T. Redox Processes Involving Oxygen: The Surprising Influence of Redox-Inactive Lewis Acids. JACS AU 2024; 4:344-368. [PMID: 38425928 PMCID: PMC10900226 DOI: 10.1021/jacsau.3c00675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 03/02/2024]
Abstract
Metalloenzymes with heteromultimetallic active sites perform chemical reactions that control several biogeochemical cycles. Transformations catalyzed by such enzymes include dioxygen generation and reduction, dinitrogen reduction, and carbon dioxide reduction-instrumental transformations for progress in the context of artificial photosynthesis and sustainable fertilizer production. While the roles of the respective metals are of interest in all these enzymatic transformations, they share a common factor in the transfer of one or multiple redox equivalents. In light of this feature, it is surprising to find that incorporation of redox-inactive metals into the active site of such an enzyme is critical to its function. To illustrate, the presence of a redox-inactive Ca2+ center is crucial in the Oxygen Evolving Complex, and yet particularly intriguing given that the transformation catalyzed by this cluster is a redox process involving four electrons. Therefore, the effects of redox inactive metals on redox processes-electron transfer, oxygen- and hydrogen-atom transfer, and O-O bond cleavage and formation reactions-mediated by transition metals have been studied extensively. Significant effects of redox inactive metals have been observed on these redox transformations; linear free energy correlations between Lewis acidity and the redox properties of synthetic model complexes are observed for several reactions. In this Perspective, these effects and their relevance to multielectron processes will be discussed.
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Affiliation(s)
| | - Sandy Suseno
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Angela A. Shiau
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Graham de Ruiter
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
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2
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Karbalaee Hosseini A, Moghadaskhou F, Tadjarodi A, Safarkoopayeh B. Dual-Ligand Strategy for the Design and Construction of a Cd-Zn Heterometallic Metal-Organic Framework by One-Pot Synthesis as a Heterogeneous Catalyst for the Epoxidation Reaction of Olefins. Inorg Chem 2023; 62:21156-21163. [PMID: 38096807 DOI: 10.1021/acs.inorgchem.3c03128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
The use of metal-organic frameworks (MOFs) as catalysts is reported in various industrial applications. In contrast to monometallic MOFs, heterometallic MOFs with mixed organic ligands showed enhanced catalytic properties. The catalytic properties of heterometallic MOFs can be enhanced by generating defects and the synergistic effect between the two heterometals at secondary building units. By using a solvothermal technique, a Cd-Zn heterometallic MOF with a new morphology, [Cd2Zn(DPTTZ)0.5(OBA)3(H2O)(HCOOH)] (IUST-4) [DPTTZ = 2,5-di(4-pyridyl)thiazolo[5,4-d]thiazole, OBA = 4,4'-oxybis(benzoic acid)], was synthesized via a mixed-ligand strategy and characterized by single-crystal and powder X-ray diffraction, Fourier transform infrared spectroscopy, elemental analysis, and thermogravimetric analysis. X-ray crystallographic analysis showed that IUST-4 is a neutral 3D metal-organic framework crystallized in the monoclinic system with space group C2/c. In this study, the catalytic properties of IUST-4 for the epoxidation of cyclooctene were investigated. IUST-4 was selected as the optimal catalyst for epoxy product production due to its high selectivity and yield. Moreover, the catalytic performance of IUST-4 was maintained despite five recycling cycles without significant degradation. The epoxidation of cyclooctene with IUST-4 has several advantages, including good selectivity, easy recovery, and short-time reaction.
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Affiliation(s)
- Akram Karbalaee Hosseini
- Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology (IUST), 16846-13114 Tehran, Iran
| | - Fatemeh Moghadaskhou
- Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology (IUST), 16846-13114 Tehran, Iran
| | - Azadeh Tadjarodi
- Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology (IUST), 16846-13114 Tehran, Iran
| | - Barzin Safarkoopayeh
- School of Chemistry, College of Science, University of Tehran, 1417935840 Tehran, Iran
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3
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Johnsen WD, Deegbey M, Grills DC, Polyansky DE, Goldberg KI, Jakubikova E, Mallouk TE. Lewis Acids and Electron-Withdrawing Ligands Accelerate CO Coordination to Dinuclear Cu I Compounds. Inorg Chem 2023. [PMID: 37228171 DOI: 10.1021/acs.inorgchem.3c01003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A series of dinuclear molecular copper complexes were prepared and used to model the binding and Lewis acid stabilization of CO in heterogeneous copper CO2 reduction electrocatalysts. Experimental studies (including measurement of rate and equilibrium constants) and electronic structure calculations suggest that the key kinetic barrier for CO binding may be a σ-interaction between CuI and the incoming CO ligand. The rate of CO coordination can be increased upon the addition of Lewis acids or electron-withdrawing substituents on the ligand backbone. Conversely, Keq for CO coordination can be increased by adding electron density to the metal centers of the compound, consistent with stronger π-backbonding. Finally, the electrochemically measured kinetic results were mapped onto an electrochemical zone diagram to illustrate how these system changes enabled access to each zone.
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Affiliation(s)
- Walter D Johnsen
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-3816, United States
| | - Mawuli Deegbey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-6682, United States
| | - David C Grills
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Dmitry E Polyansky
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Karen I Goldberg
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-3816, United States
| | - Elena Jakubikova
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-6682, United States
| | - Thomas E Mallouk
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-3816, United States
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4
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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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5
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Singh P, Denler MC, Mayfield JR, Jackson TA. Differences in chemoselectivity in olefin oxidation by a series of non-porphyrin manganese(IV)-oxo complexes. Dalton Trans 2022; 51:5938-5949. [PMID: 35348163 DOI: 10.1039/d2dt00876a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
High valent metal-oxo intermediates are versatile oxidants known to facilitate both oxygen atom transfer (OAT) and hydrogen atom transfer (HAT) reactions in nature. In addition to performing essential yet challenging biological reactions, these intermediates are known for their selectivity in favoring the formation of one oxidation product. To understand the basis for this selectivity, we explore the role of equatorial ligand field perturbations in MnIV-oxo complexes on chemoselectivity in cyclohexene oxidation. We also examine reactions of MnIV-oxo complexes with cyclohexene-d10, cyclooctene, and styrene. Within this series, the product distribution in olefin oxidation is highly dependent on the coordination environment of the MnIV-oxo unit. While MnIV-oxo complexes with sterically encumbered, and slightly tilted, MnO units favor CC epoxidation products in cyclohexene oxidation, a less encumbered analogue prefers to cleave allylic C-H bonds, resulting in cyclohexenol and cyclohexenone formation. These conclusions are drawn from GC-MS product analysis of the reaction mixture, changes in the UV-vis absorption spectra, and kinetic analyses. DFT computations establish a trend in thermodynamic properties of the MnIV-oxo complexes and their reactivity towards olefin oxidation on the basis of the MnO bond dissociation free energy (BDFE). The most reactive MnIV-oxo adduct from this series oxidizes cyclohexene-d10, cyclooctene, and styrene to give corresponding epoxides as the only detected products. Collectively, these results suggest that the chemoselectivity obtained in oxidation of olefins is controlled by both the coordination environment around the MnO unit, which modulates the MnO BDFE, and the BDFEs of the allylic C-H bond of the olefins.
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Affiliation(s)
- Priya Singh
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Melissa C Denler
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Jaycee R Mayfield
- 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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6
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Shi H, Cheng L, Pan Y, Mak CK, Lau KC, Lau TC. Synergistic effects of CH 3CO 2H and Ca 2+ on C–H bond activation by MnO 4−. Chem Sci 2022; 13:11600-11606. [PMID: 36320399 PMCID: PMC9555569 DOI: 10.1039/d2sc03089f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
The activation of metal-oxo species with Lewis acids is of current interest. In this work, the effects of a weak Brønsted acid such as CH3CO2H and a weak Lewis acid such as Ca2+ on C–H bond activation by KMnO4 have been investigated. Although MnO4− is rather non-basic (pKa of MnO3(OH) = −2.25), it can be activated by AcOH or Ca2+ to oxidize cyclohexane at room temperature to give cyclohexanone as the major product. A synergistic effect occurs when both AcOH and Ca2+ are present; the relative rates for the oxidation of cyclohexane by MnO4−/AcOH, MnO4−/Ca2+ and MnO4−/AcOH/Ca2+ are 1 : 73 : 198. DFT calculations show that in the active intermediate of MnO4−/AcOH/Ca2+, MnO4− is H-bonded to 3 AcOH molecules, while Ca2+ is bonded to 3 AcOH molecules as well as to an oxo ligand of MnO4−. Our results also suggest that these synergistic activating effects of a weak Brønsted acid and a weak Lewis acid should be applicable to a variety of metal-oxo species. The activation of metal-oxo species with Lewis acids is of current interest.![]()
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Affiliation(s)
- Huatian Shi
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Lin Cheng
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Yi Pan
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Chi-Keung Mak
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Kai-Chung Lau
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Tai-Chu Lau
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
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7
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Panda C, Doyle LM, Gericke R, McDonald AR. Rapid Iron(III)−Fluoride‐Mediated Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chakadola Panda
- School of Chemistry Trinity College Dublin The University of Dublin, College Green Dublin 2 Ireland
| | - Lorna M. Doyle
- School of Chemistry Trinity College Dublin The University of Dublin, College Green Dublin 2 Ireland
| | - Robert Gericke
- School of Chemistry Trinity College Dublin The University of Dublin, College Green Dublin 2 Ireland
- Current address: Helmholtz-Zentrum Dresden-Rossendorf e. V. Institute of Resource Ecology Bautzner Landstrasse 400 01328 Dresden Germany
| | - Aidan R. McDonald
- School of Chemistry Trinity College Dublin The University of Dublin, College Green Dublin 2 Ireland
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8
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Karmalkar DG, Seo MS, Lee YM, Kim Y, Lee E, Sarangi R, Fukuzumi S, Nam W. Deeper Understanding of Mononuclear Manganese(IV)-Oxo Binding Brønsted and Lewis Acids and the Manganese(IV)-Hydroxide Complex. Inorg Chem 2021; 60:16996-17007. [PMID: 34705465 DOI: 10.1021/acs.inorgchem.1c02119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Binding of Lewis acidic metal ions and Brønsted acid at the metal-oxo group of high-valent metal-oxo complexes enhances their reactivities significantly in oxidation reactions. However, such a binding of Lewis acids and proton at the metal-oxo group has been questioned in several cases and remains to be clarified. Herein, we report the synthesis, characterization, and reactivity studies of a mononuclear manganese(IV)-oxo complex binding triflic acid, {[(dpaq)MnIV(O)]-HOTf}+ (1-HOTf). First, 1-HOTf was synthesized and characterized using various spectroscopic techniques, including resonance Raman (rRaman) and X-ray absorption spectroscopy/extended X-ray absorption fine structure. In particular, in rRaman experiments, we observed a linear correlation between the Mn-O stretching frequencies of 1-HOTf (e.g., νMn-O at ∼793 cm-1) and 1-Mn+ (Mn+ = Ca2+, Zn2+, Lu3+, Al3+, or Sc3+) and the Lewis acidities of H+ and Mn+ ions, suggesting that H+ and Mn+ bind at the metal-oxo moiety of [(dpaq)MnIV(O)]+. Interestingly, a single-crystal structure of 1-HOTf was obtained by X-ray diffraction analysis, but the structure was not an expected Mn(IV)-oxo complex but a Mn(IV)-hydroxide complex, [(dpaq)MnIV(OH)](OTf)2 (4), with a Mn-O bond distance of 1.8043(19) Å and a Mn-O stretch at 660 cm-1. More interestingly, 4 reverted to 1-HOTf upon dissolution, demonstrating that 1-HOTf and 4 are interconvertible depending on the physical states, such as 1-HOTf in solution and 4 in isolated solid. The reactivity of 1-HOTf was investigated in hydrogen atom transfer (HAT) and oxygen atom transfer (OAT) reactions and then compared with those of 1-Mn+ complexes; an interesting correlation between the Mn-O stretching frequencies of 1-HOTf and 1-Mn+ and their reactivities in the OAT and HAT reactions is reported for the first time in this study.
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Affiliation(s)
- Deepika G Karmalkar
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Mi Sook Seo
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Youngsuk Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Korea
| | - Ritimukta Sarangi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
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9
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Panda C, Doyle LM, Gericke R, McDonald AR. Rapid Iron(III)-Fluoride-Mediated Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2021; 60:26281-26286. [PMID: 34582619 PMCID: PMC9298026 DOI: 10.1002/anie.202112683] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Indexed: 01/08/2023]
Abstract
We anticipate high-valent metal-fluoride species will be highly effective hydrogen atom transfer (HAT) oxidants because of the magnitude of the H-F bond (in the product) that drives HAT oxidation. We prepared a dimeric FeIII (F)-F-FeIII (F) complex (1) by reacting [FeII (NCCH3 )2 (TPA)](ClO4 )2 (TPA=tris(2-pyridylmethyl)amine) with difluoro(phenyl)-λ3 -iodane (difluoroiodobenzene). 1 was a sluggish oxidant, however, it was readily activated by reaction with Lewis or Brønsted acids to yield a monomeric [FeIII (TPA)(F)(X)]+ complex (2) where X=F/OTf. 1 and 2 were characterized using NMR, EPR, UV/Vis, and FT-IR spectroscopies and mass spectrometry. 2 was a remarkably reactive FeIII reagent for oxidative C-H activation, demonstrating reaction rates for hydrocarbon HAT comparable to the most reactive FeIII and FeIV oxidants.
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Affiliation(s)
- Chakadola Panda
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Lorna M Doyle
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Robert Gericke
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland.,Current address: Helmholtz-Zentrum Dresden-Rossendorf e. V., Institute of Resource Ecology, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Aidan R McDonald
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
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10
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Tomboc GM, Park Y, Lee K, Jin K. Directing transition metal-based oxygen-functionalization catalysis. Chem Sci 2021; 12:8967-8995. [PMID: 34276926 PMCID: PMC8261717 DOI: 10.1039/d1sc01272j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/07/2021] [Indexed: 11/21/2022] Open
Abstract
This review presents the recent progress of oxygen functionalization reactions based on non-electrochemical (conventional organic synthesis) and electrochemical methods. Although both methods have their advantages and limitations, the former approach has been used to synthesize a broader range of organic substances as the latter is limited by several factors, such as poor selectivity and high energy cost. However, because electrochemical methods can replace harmful terminal oxidizers with external voltage, organic electrosynthesis has emerged as greener and more eco-friendly compared to conventional organic synthesis. The progress of electrochemical methods toward oxygen functionalization is presented by an in-depth discussion of different types of electrically driven-chemical organic synthesis, with particular attention to recently developed electrochemical systems and catalyst designs. We hope to direct the attention of readers to the latest breakthroughs of traditional oxygen functionalization reactions and to the potential of electrochemistry for the transformation of organic substrates to useful end products.
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Affiliation(s)
- Gracita M Tomboc
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Yeji Park
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Kyoungsuk Jin
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
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11
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Rydel-Ciszek K. The most reactive iron and manganese complexes with N-pentadentate ligands for dioxygen activation—synthesis, characteristics, applications. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [PMCID: PMC8204929 DOI: 10.1007/s11144-021-02008-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The iron and manganese complexes that activate oxygen atom play multiple role in technologically relevant reactions as well as in biological transformations, in which exist in different redox states. Among them, high-valent oxo intermediate seems to be the most important one. Iron, and/or manganese-based processes have found application in many areas, starting from catalysis and sustainable technologies, through DNA oxidative cleavage, to new substances useful in chemotherapeutic drugs. This review is not only the latest detailed list of uses of homogeneous N-pentadentate iron and manganese catalysts for syntheses of valuable molecules with huge applications in green technologies, but also a kind of "a cookbook", collecting "recipes" for the discussed complexes, in which the sources necessary to obtain a full characterization of the compounds are presented. Following the catalytic activity of metalloenzymes, and taking into account the ubiquity of iron and manganese salts, which in combination with properly designed ligands may show similarity to natural systems, the discussed complexes can find application as new anti-cancer drugs. Also, owing to ability of oxygen atom to exchange in reaction with H2O, they can be successfully applied in photodriven reactions of water oxidation, as well as in chemically regenerated fuel cells as a redox catalyst.
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Affiliation(s)
- Katarzyna Rydel-Ciszek
- Department of Physical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, al. Powstańców Warszawy 6, P.O. Box 85, 35-959 Rzeszów, Poland
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12
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Shashikala HBM, Chakravorty A, Panday SK, Alexov E. BION-2: Predicting Positions of Non-Specifically Bound Ions on Protein Surface by a Gaussian-Based Treatment of Electrostatics. Int J Mol Sci 2020; 22:ijms22010272. [PMID: 33383946 PMCID: PMC7794834 DOI: 10.3390/ijms22010272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/25/2020] [Accepted: 12/26/2020] [Indexed: 01/16/2023] Open
Abstract
Ions play significant roles in biological processes—they may specifically bind to a protein site or bind non-specifically on its surface. Although the role of specifically bound ions ranges from actively providing structural compactness via coordination of charge–charge interactions to numerous enzymatic activities, non-specifically surface-bound ions are also crucial to maintaining a protein’s stability, responding to pH and ion concentration changes, and contributing to other biological processes. However, the experimental determination of the positions of non-specifically bound ions is not trivial, since they may have a low residential time and experience significant thermal fluctuation of their positions. Here, we report a new release of a computational method, the BION-2 method, that predicts the positions of non-specifically surface-bound ions. The BION-2 utilizes the Gaussian-based treatment of ions within the framework of the modified Poisson–Boltzmann equation, which does not require a sharp boundary between the protein and water phase. Thus, the predictions are done by the balance of the energy of interaction between the protein charges and the corresponding ions and the de-solvation penalty of the ions as they approach the protein. The BION-2 is tested against experimentally determined ion’s positions and it is demonstrated that it outperforms the old BION and other available tools.
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Affiliation(s)
- H. B. Mihiri Shashikala
- Department of Physics, Clemson University, Clemson, SC 29634, USA; (H.B.M.S.); (A.C.); (S.K.P.)
| | - Arghya Chakravorty
- Department of Physics, Clemson University, Clemson, SC 29634, USA; (H.B.M.S.); (A.C.); (S.K.P.)
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shailesh Kumar Panday
- Department of Physics, Clemson University, Clemson, SC 29634, USA; (H.B.M.S.); (A.C.); (S.K.P.)
| | - Emil Alexov
- Department of Physics, Clemson University, Clemson, SC 29634, USA; (H.B.M.S.); (A.C.); (S.K.P.)
- Correspondence:
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13
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Rayati S, Khodaei E, Nafarieh P, Jafarian M, Elmi B, Wojtczak A. A manganese(iii) Schiff base complex immobilized on silica-coated magnetic nanoparticles showing enhanced electrochemical catalytic performance toward sulfide and alkene oxidation. RSC Adv 2020; 10:17026-17036. [PMID: 35496932 PMCID: PMC9053262 DOI: 10.1039/d0ra02728f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/16/2020] [Indexed: 11/21/2022] Open
Abstract
A Mn–Schiff base complex supported on silica-coated iron magnetic nanoparticles was used for the electrochemical oxidation of sulfides and alkenes.
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Affiliation(s)
- Saeed Rayati
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran 15418
- Iran
| | - Elham Khodaei
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran 15418
- Iran
| | - Parinaz Nafarieh
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran 15418
- Iran
| | - Majid Jafarian
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran 15418
- Iran
| | - Bahareh Elmi
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran 15418
- Iran
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14
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Yan W, Wang J, Ding J, Sun P, Zhang S, Shen J, Jin X. Catalytic epoxidation of olefins in liquid phase over manganese based magnetic nanoparticles. Dalton Trans 2019; 48:16827-16843. [PMID: 31646315 DOI: 10.1039/c9dt03456k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Epoxidation of olefins stands out as a crucial class of reactions and is of great interest in academic research and industry due to the production of various important fine chemicals and intermediates. Manganese complexes have the potential to catalyze the epoxidation of olefins with high efficiency. Magnetic nanocatalysts have attracted significant attention for immobilizing homogeneous transition metal complexes. Easy separation by external magnetic fields, nontoxicity, and a core shell structure are the main advantages of magnetic nanocatalysts over other heterogeneous catalysts. The method of functionalizing magnetic nanoparticles and of anchoring homogeneous metal complexes has significant effects on catalytic performance. Therefore, a critical review of recent research progress on manganese complexes' immobilization on magnetic nanoparticles for liquid phase olefin epoxidation is necessary. In this work, magnetic nanoparticles are categorized according to their preparation procedures and structures. The physical/chemical properties, catalytic performance for olefin epoxidation, reusability and plausible reaction mechanisms will be discussed, in an attempt to unravel the structure-function relationship and to guide the future study of MNPs' design for olefin epoxidations.
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Affiliation(s)
- Wenjuan Yan
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
| | - Jinyao Wang
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
| | - Jie Ding
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
| | - Puhua Sun
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
| | - Shuxia Zhang
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
| | - Jian Shen
- College of Environment and Resources, Xiangtan University, Xiangtan, Hunan Province 411105, China
| | - Xin Jin
- State Key Laboratory of Heavy Oil Processing, Center for Chemical Engineering Experimental Teaching, China University of Petroleum, Qingdao, Shandong Province 266580, China.
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15
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Steen JD, Stepanovic S, Parvizian M, de Boer JW, Hage R, Chen J, Swart M, Gruden M, Browne WR. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorg Chem 2019; 58:14924-14930. [PMID: 31625380 PMCID: PMC6832668 DOI: 10.1021/acs.inorgchem.9b02737] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
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Lewis acid (LA) activation
by coordination to metal oxido species
has emerged as a new strategy in catalytic oxidations. Despite the
many reports of enhancement of performance in oxidation catalysis,
direct evidence for LA-catalyst interactions under catalytically relevant
conditions is lacking. Here, we show, using the oxidation of alkenes
with H2O2 and the catalyst [Mn2(μ-O)3(tmtacn)2](PF6)2 (1), that Lewis acids commonly used to enhance catalytic activity,
e.g., Sc(OTf)3, in fact undergo hydrolysis with adventitious
water to release a strong Brønsted acid. The formation of Brønsted
acids in situ is demonstrated using a combination of resonance Raman,
UV/vis absorption spectroscopy, cyclic voltammetry, isotope labeling,
and DFT calculations. The involvement of Brønsted acids in LA
enhanced systems shown here holds implications for the conclusions
reached in regard to the relevance of direct LA-metal oxido interactions
under catalytic conditions. Lewis acid activation of oxidation
catalysts is proposed
to be through binding of the Lewis acids to metal-oxo species. The
activity of the catalyst [Mn2(μ-O)3(tmtacn)2](PF6)2 in the oxidation of alkenes
with H2O2 appears to correlate with the strength
of the Lewis acid used for its activation. We show that the correlation
arises from the relative propensity of the Lewis acids to generate
Brønsted acids in situ.
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Affiliation(s)
- Jorn D Steen
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering , University of Groningen , Nijenborgh 4 , 9747 AG , Groningen , The Netherlands
| | - Stepan Stepanovic
- Faculty of Chemistry , University of Belgrade , Studentski trg 12-16 , 11000 Belgrade , Serbia
| | - Mahsa Parvizian
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering , University of Groningen , Nijenborgh 4 , 9747 AG , Groningen , The Netherlands
| | - Johannes W de Boer
- Catexel B.V. , BioPartner Center Leiden , Galileiweg 8 , 2333 BD Leiden , The Netherlands
| | - Ronald Hage
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering , University of Groningen , Nijenborgh 4 , 9747 AG , Groningen , The Netherlands.,Catexel B.V. , BioPartner Center Leiden , Galileiweg 8 , 2333 BD Leiden , The Netherlands
| | - Juan Chen
- Department of Applied Chemistry, School of Science , Northwestern Polytechnical University , Xi'an , Shaanxi 710072 , China
| | - Marcel Swart
- IQCC & Departament de Química , Universitat de Girona , Campus Montilivi (Ciències) , 17003 Girona , Spain.,ICREA , Pg. Lluís Companys 23 , 08010 Barcelona , Spain
| | - Maja Gruden
- Faculty of Chemistry , University of Belgrade , Studentski trg 12-16 , 11000 Belgrade , Serbia
| | - Wesley R Browne
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering , University of Groningen , Nijenborgh 4 , 9747 AG , Groningen , The Netherlands
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16
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Xue JW, Zeng M, Zhang S, Chen Z, Yin G. Lewis Acid Promoted Aerobic Oxidative Coupling of Thiols with Phosphonates by Simple Nickel(II) Catalyst: Substrate Scope and Mechanistic Studies. J Org Chem 2019; 84:4179-4190. [DOI: 10.1021/acs.joc.9b00194] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jing-Wen Xue
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
| | - Miao Zeng
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
| | - Sicheng Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
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17
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Liu Y, Lau TC. Activation of Metal Oxo and Nitrido Complexes by Lewis Acids. J Am Chem Soc 2019; 141:3755-3766. [DOI: 10.1021/jacs.8b13100] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yingying Liu
- Department of Chemistry and Institute of Molecular Functional Materials, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong 999077, China
| | - Tai-Chu Lau
- Department of Chemistry and Institute of Molecular Functional Materials, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong 999077, China
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18
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Maity S, Ghosh S, Ghosh A. Elucidating the secondary effect in the Lewis acid mediated anodic shift of electrochemical oxidation of a Cu(ii) complex with a N2O2 donor unsymmetrical ligand. Dalton Trans 2019; 48:14898-14913. [DOI: 10.1039/c9dt03323h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The causes behind the fluctuations from a linear dependence of the electrochemical signal of a guest bound metalloligand [CuL] with the Lewis acidity of redox-inactive cations were established by using UV-vis spectroscopy and cyclic voltammetry.
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Affiliation(s)
- Souvik Maity
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Soumavo Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
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19
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Bikas R, Shahmoradi E, Reinoso S, Emami M, Lezama L, Sanchiz J, Noshiranzadeh N. The effect of the orientation of the Jahn–Teller distortion on the magnetic interactions of trinuclear mixed-valence Mn(ii)/Mn(iii) complexes. Dalton Trans 2019; 48:13799-13812. [DOI: 10.1039/c9dt01652j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The effect of the orientation of the Jahn–Teller distortion on the magnetic interactions in two new mixed-valence trinuclear Mn(iii)–Mn(ii)–Mn(iii) complexes has been investigated.
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Affiliation(s)
- Rahman Bikas
- Department of Chemistry
- Faculty of Science
- Imam Khomeini International University
- 34148-96818 Qazvin
- Iran
| | - Elaheh Shahmoradi
- Department of Chemistry
- Faculty of Science
- University of Zanjan
- 45371-38791 Zanjan
- Iran
| | - Santiago Reinoso
- Institute for Advanced Materials (InaMat)
- Universidad Pública de Navarra
- 31006 Pamplona
- Spain
| | - Marzieh Emami
- Department of Chemistry
- Faculty of Science
- University of Zanjan
- 45371-38791 Zanjan
- Iran
| | - Luis Lezama
- Departamento de Química Inorgánica
- Facultad de Ciencia y Tecnología
- Universidad del País Vasco UPV/EHU
- 48080 Bilbao
- Spain
| | - Joaquín Sanchiz
- Department of Chemistry
- Faculty of Science
- Instituto de Materiales y Nanotecnología
- University of La Laguna
- 38206 Tenerife
| | - Nader Noshiranzadeh
- Department of Chemistry
- Faculty of Science
- University of Zanjan
- 45371-38791 Zanjan
- Iran
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20
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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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21
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Chantarojsiri T, Ziller JW, Yang JY. Incorporation of redox-inactive cations promotes iron catalyzed aerobic C-H oxidation at mild potentials. Chem Sci 2018; 9:2567-2574. [PMID: 29732136 PMCID: PMC5911827 DOI: 10.1039/c7sc04486k] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/28/2018] [Indexed: 12/18/2022] Open
Abstract
The synthesis and characterization of the Schiff base complexes Fe(ii) (2M) and Fe(iii)Cl (3M), where M is a K+ or Ba2+ ion incorporated into the ligand, are reported. The Fe(iii/ii) redox potentials are positively shifted by 440 mV (2K) and 640 mV (2Ba) compared to Fe(salen) (salen = N,N'-bis(salicylidene)ethylenediamine), and by 70 mV (3K) and 230 mV (3Ba) compared to Fe(Cl)(salen), which is likely due to an electrostatic effect (electric field) from the cation. The catalytic activity of 3M towards the aerobic oxidation of allylic C-H bonds was explored. Prior studies on iron salen complexes modified through conventional electron-donating or withdrawing substituents found that only the most oxidizing derivatives were competent catalysts. In contrast, the 3M complexes, which are significantly less oxidizing, are both active. Mechanistic studies comparing 3M to Fe(salen) derivatives indicate that the proximal cation contributes to the overall reactivity in the rate determining step. The cationic charge also inhibits oxidative deactivation through formation of the corresponding Fe2-μ-oxo complexes, which were isolated and characterized. This study demonstrates how non-redox active Lewis acidic cations in the secondary coordination sphere can be used to modify redox catalysts in order to operate at milder potentials with a minimal impact on the reactivity, an effect that was unattainable by tuning the catalyst through traditional substituent effects on the ligand.
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Affiliation(s)
| | - Joseph W Ziller
- Department of Chemistry , University of California , Irvine , 92697 , USA .
| | - Jenny Y Yang
- Department of Chemistry , University of California , Irvine , 92697 , USA .
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22
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Balamurugan M, Saravanan N, Ha H, Lee YH, Nam KT. Involvement of high-valent manganese-oxo intermediates in oxidation reactions: realisation in nature, nano and molecular systems. NANO CONVERGENCE 2018; 5:18. [PMID: 30101051 PMCID: PMC6061251 DOI: 10.1186/s40580-018-0150-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/19/2018] [Indexed: 05/12/2023]
Abstract
Manganese plays multiple role in many biological redox reactions in which it exists in different oxidation states from Mn(II) to Mn(IV). Among them the high-valent manganese-oxo intermediate plays important role in the activity of certain enzymes and lessons from the natural system provide inspiration for new developments of artificial systems for a sustainable energy supply and various organic conversions. This review describes recent advances and key lessons learned from the nature on high-valent Mn-oxo intermediates. Also we focus on the elemental science developed from the natural system, how the novel strategies are realised in nano particles and molecular sites at heterogeneous and homogeneous reaction conditions respectively. Finally, perspectives on the utilisation of the high-valent manganese-oxo species towards other organic reactions are proposed.
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Affiliation(s)
- Mani Balamurugan
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744 South Korea
| | - Natarajan Saravanan
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744 South Korea
| | - Heonjin Ha
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744 South Korea
| | - Yoon Ho Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744 South Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744 South Korea
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23
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Zhang J, Wei WJ, Lu X, Yang H, Chen Z, Liao RZ, Yin G. Nonredox Metal Ions Promoted Olefin Epoxidation by Iron(II) Complexes with H2O2: DFT Calculations Reveal Multiple Channels for Oxygen Transfer. Inorg Chem 2017; 56:15138-15149. [DOI: 10.1021/acs.inorgchem.7b02463] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jisheng Zhang
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Wen-Jie Wei
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiaoyan Lu
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Hang Yang
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering, Key laboratory
of Material Chemistry for Energy Conversion and Storage, Ministry
of Education, Hubei Key Laboratory of Material Chemistry and Service
Failure, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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24
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Lv Z, Chen Z, Hu Y, Zheng W, Wang H, Mo W, Yin G. A General Strategy for Open-Flask Alkene Isomerization by Ruthenium Hydride Complexes with Non-Redox Metal Salts. ChemCatChem 2017. [DOI: 10.1002/cctc.201700687] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhanao Lv
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Yue Hu
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Wenrui Zheng
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Haibin Wang
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Wanling Mo
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
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25
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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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26
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Lv Z, Wang H, Chen Z, Zou S, Zhu S, Lou C, Yin G. Non-redox metal ions promoted dehydrogenation of saturated C–C bond by a ruthenium catalyst with dioxygen activation. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2016.12.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Zhang S, Xu H, Lou C, Senan AM, Chen Z, Yin G. Efficient Bimetallic Catalysis of Nitrile Hydration to Amides with a Simple Pd(OAc)2
/Lewis Acid Catalyst at Ambient Temperature. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601495] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sicheng Zhang
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
| | - Haosheng Xu
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
| | - Chenlin Lou
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
| | - Ahmed M. Senan
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering; Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology); Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Huazhong University of Science and Technology; 430074 Wuhan P. R. China
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28
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Vaddypally S, Kondaveeti SK, Karki S, Van Vliet MM, Levis RJ, Zdilla MJ. Reactive Pendant Mn═O in a Synthetic Structural Model of a Proposed S4 State in the Photosynthetic Oxygen Evolving Complex. J Am Chem Soc 2017; 139:4675-4681. [DOI: 10.1021/jacs.6b05906] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Shivaiah Vaddypally
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Sandeep K. Kondaveeti
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Santosh Karki
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Megan M. Van Vliet
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Robert J. Levis
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Michael J. Zdilla
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
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29
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Reath AH, Ziller JW, Tsay C, Ryan AJ, Yang JY. Redox Potential and Electronic Structure Effects of Proximal Nonredox Active Cations in Cobalt Schiff Base Complexes. Inorg Chem 2017; 56:3713-3718. [DOI: 10.1021/acs.inorgchem.6b03098] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Alexander H. Reath
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Charlene Tsay
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Austin J. Ryan
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Jenny Y. Yang
- Department of Chemistry, University of California, Irvine, California 92697, United States
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30
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High-valent metal-oxo complexes generated in catalytic oxidation reactions using water as an oxygen source. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.09.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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31
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Koepf M, Bergkamp JJ, Teillout AL, Llansola-Portoles MJ, Kodis G, Moore AL, Gust D, Moore TA. Design of porphyrin-based ligands for the assembly of [d-block metal : calcium] bimetallic centers. Dalton Trans 2017; 46:4199-4208. [DOI: 10.1039/c6dt04647a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A secondary binding-site for alkaline-earth cations is introduced on a porphyrin platform to obtain competent bitopicN,O-ligands.
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Affiliation(s)
- Matthieu Koepf
- School of Molecular Sciences
- Arizona State University
- Tempe
- USA
| | | | | | | | - Gerdenis Kodis
- School of Molecular Sciences
- Arizona State University
- Tempe
- USA
| | - Ana L. Moore
- School of Molecular Sciences
- Arizona State University
- Tempe
- USA
| | - Devens Gust
- School of Molecular Sciences
- Arizona State University
- Tempe
- USA
| | - Thomas A. Moore
- School of Molecular Sciences
- Arizona State University
- Tempe
- USA
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32
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Hong S, Lee YM, Sankaralingam M, Vardhaman AK, Park YJ, Cho KB, Ogura T, Sarangi R, Fukuzumi S, Nam W. A Manganese(V)-Oxo Complex: Synthesis by Dioxygen Activation and Enhancement of Its Oxidizing Power by Binding Scandium Ion. J Am Chem Soc 2016; 138:8523-32. [PMID: 27310336 DOI: 10.1021/jacs.6b03874] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A mononuclear non-heme manganese(V)-oxo complex, [Mn(V)(O)(TAML)](-) (1), was synthesized by activating dioxygen in the presence of olefins with weak allylic C-H bonds and characterized structurally and spectroscopically. In mechanistic studies, the formation rate of 1 was found to depend on the allylic C-H bond dissociation energies (BDEs) of olefins, and a kinetic isotope effect (KIE) value of 16 was obtained in the reactions of cyclohexene and cyclohexene-d10. These results suggest that a hydrogen atom abstraction from the allylic C-H bonds of olefins by a putative Mn(IV)-superoxo species, which is formed by binding O2 by a high-spin (S = 2) [Mn(III)(TAML)](-) complex, is the rate-determining step. A Mn(V)-oxo complex binding Sc(3+) ion, [Mn(V)(O)(TAML)](-)-(Sc(3+)) (2), was also synthesized in the reaction of 1 with Sc(3+) ion and then characterized using various spectroscopic techniques. The binding site of the Sc(3+) ion was proposed to be the TAML ligand, not the Mn-O moiety, probably due to the low basicity of the oxo group compared to the basicity of the amide carbonyl group in the TAML ligand. Reactivity studies of the Mn(V)-oxo intermediates, 1 and 2, in oxygen atom transfer and electron-transfer reactions revealed that the binding of Sc(3+) ion at the TAML ligand of Mn(V)-oxo enhanced its oxidizing power with a positively shifted one-electron reduction potential (ΔEred = 0.70 V). This study reports the first example of tuning the second coordination sphere of high-valent metal-oxo species by binding a redox-inactive metal ion at the supporting ligand site, thereby modulating their electron-transfer properties as well as their reactivities in oxidation reactions.
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Affiliation(s)
- Seungwoo Hong
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | | | - Anil Kumar Vardhaman
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | - Young Jun Park
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | - Kyung-Bin Cho
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | - Takashi Ogura
- Picobiology Institute, Graduate School of Life Science, University of Hyogo , Hyogo 678-1297, Japan
| | - Ritimukta Sarangi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Korea
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Lv Z, Zheng W, Chen Z, Tang Z, Mo W, Yin G. Synergistic oxygen atom transfer by ruthenium complexes with non-redox metal ions. Dalton Trans 2016; 45:11369-83. [PMID: 27333442 DOI: 10.1039/c6dt01077f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Non-redox metal ions can affect the reactivity of active redox metal ions in versatile biological and heterogeneous oxidation processes; however, the intrinsic roles of these non-redox ions still remain elusive. This work demonstrates the first example of the use of non-redox metal ions as Lewis acids to sharply improve the catalytic oxygen atom transfer efficiency of a ruthenium complex bearing the classic 2,2'-bipyridine ligand. In the absence of Lewis acid, the oxidation of ruthenium(ii) complex by PhI(OAc)2 generates the Ru(iv)[double bond, length as m-dash]O species, which is very sluggish for olefin epoxidation. When Ru(bpy)2Cl2 was tested as a catalyst alone, only 21.2% of cyclooctene was converted, and the yield of 1,2-epoxycyclooctane was only 6.7%. As evidenced by electronic absorption spectra and EPR studies, both the oxidation of Ru(ii) by PhI(OAc)2 and the reduction of Ru(iv)[double bond, length as m-dash]O by olefin are kinetically slow. However, adding non-redox metal ions such as Al(iii) can sharply improve the oxygen transfer efficiency of the catalyst to 100% conversion with 89.9% yield of epoxide under identical conditions. Through various spectroscopic characterizations, an adduct of Ru(iv)[double bond, length as m-dash]O with Al(iii), Ru(iv)[double bond, length as m-dash]O/Al(iii), was proposed to serve as the active species for epoxidation, which in turn generated a Ru(iii)-O-Ru(iii) dimer as the reduced form. In particular, both the oxygen transfer from Ru(iv)[double bond, length as m-dash]O/Al(iii) to olefin and the oxidation of Ru(iii)-O-Ru(iii) back to the active Ru(iv)[double bond, length as m-dash]O/Al(iii) species in the catalytic cycle can be remarkably accelerated by adding a non-redox metal, such as Al(iii). These results have important implications for the role played by non-redox metal ions in catalytic oxidation at redox metal centers as well as for the understanding of the redox mechanism of ruthenium catalysts in the oxygen atom transfer reaction.
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Affiliation(s)
- Zhanao Lv
- Key laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Key laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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Senan AM, Qin S, Zhang S, Lou C, Chen Z, Liao RZ, Yin G. Nonredox Metal-Ion-Accelerated Olefin Isomerization by Palladium(II) Catalysts: Density Functional Theory (DFT) Calculations Supporting the Experimental Data. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01061] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ahmed M. Senan
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Shuhao Qin
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Sicheng Zhang
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Chenling Lou
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Zhuqi Chen
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Guochuan Yin
- School of Chemistry and Chemical
Engineering, Key Laboratory of Material Chemistry for Energy Conversion
and Storage, and Ministry of Education, Hubei Key Laboratory of Material
Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
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Li Y, Jawad A, Khan A, Lu X, Chen Z, Liu W, Yin G. Synergistic degradation of phenols by bimetallic CuO–Co3O4@γ-Al2O3 catalyst in H2O2/HCO3− system. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61092-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang S, Chen Z, Qin S, Lou C, Senan AM, Liao RZ, Yin G. Non-redox metal ion promoted oxidative coupling of indoles with olefins by the palladium(ii) acetate catalyst through dioxygen activation: experimental results with DFT calculations. Org Biomol Chem 2016; 14:4146-57. [DOI: 10.1039/c6ob00401f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Non-redox metal ions can sharply improve the Pd(ii)-catalyzed oxidative coupling of indoles with acrylates, leading to one-step synthesis of bis(indolyl)methane derivatives.
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Affiliation(s)
- Sicheng Zhang
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Shuhao Qin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Chenlin Lou
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Ahmed M. Senan
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
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Qin S, Dong L, Chen Z, Zhang S, Yin G. Non-redox metal ions can promote Wacker-type oxidations even better than copper(II): a new opportunity in catalyst design. Dalton Trans 2015; 44:17508-15. [PMID: 26390300 DOI: 10.1039/c5dt02612a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In Wacker oxidation and inspired Pd(ii)/Cu(ii)-catalyzed C-H activations, copper(ii) is believed to serve in re-oxidizing of Pd(0) in the catalytic cycle. Herein we report that non-redox metal ions like Sc(iii) can promote Wacker-type oxidations even better than Cu(ii); both Sc(iii) and Cu(ii) can greatly promote Pd(ii)-catalyzed olefin isomerization in which the redox properties of Cu(ii) are not essential, indicating that the Lewis acid properties of Cu(ii) can play a significant role in Pd(ii)-catalyzed C-H activations in addition to its redox properties. Characterization of catalysts using UV-Vis and NMR indicated that adding Sc(OTf)3 to the acetonitrile solution of Pd(OAc)2 generates a new Pd(ii)/Sc(iii) bimetallic complex having a diacetate bridge which serves as the key active species for Wacker-type oxidation and olefin isomerization. Linkage of trivalent Sc(iii) to the Pd(ii) species makes it more electron-deficient, thus facilitating the coordination of olefin to the Pd(ii) cation. Due to the improved electron transfer from olefin to the Pd(ii) cation, it benefits the nucleophilic attack of water on the olefinic double bond, leading to efficient olefin oxidation. The presence of excess Sc(iii) prevents the palladium(0) black formation, which has been rationalized by the formation of the Sc(iii)H-Pd(ii) intermediate. This intermediate inhibits the reductive elimination of the H-Pd(ii) bond, and facilitates the oxygen insertion to form the HOO-Pd(ii) intermediate, and thus avoids the formation of the inactive palladium(0) black. The Lewis acid promoted Wacker-type oxidation and olefin isomerization demonstrated here may open up a new opportunity in catalyst design for versatile C-H activations.
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Affiliation(s)
- Shuhao Qin
- 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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Affiliation(s)
- Shunichi Fukuzumi
- 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
- Department of Bioinspired Science; Ewha Womans University; Seoul 120-750 Korea
- Faculty of Science and Technology; Meijo University and ALCA and SENTAN, Japan Science and Technology Agency (JST); Tempaku Nagoya, Aichi 468-8502 Japan
| | - Kei Ohkubo
- 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
- Department of Bioinspired Science; Ewha Womans University; Seoul 120-750 Korea
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