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Takeda H, Irimajiri M, Mizutani T, Nozawa S, Matsuura Y, Kurosu M, Ishitani O. Photocatalytic CO 2 Reduction Using Mixed Catalytic Systems Comprising an Iron Cation with Bulky Phenanthroline Ligands. Inorg Chem 2024; 63:7343-7355. [PMID: 38598607 DOI: 10.1021/acs.inorgchem.4c00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
This study reports on efficient photocatalytic CO2 reduction reactions using mixed catalytic systems of an Fe ion source and various 1,10-phenanthroline derivatives (R1R2p) as ligands in the presence of triethanolamine (TEOA). As the relatively bulky substituents at positions 2 and 9 of R1R2p weakened the ability to coordinate to the Fe ion, the Fe ion formed TEOA complexes. The free R1R2p accepted an electron from the reduced photosensitizer through proton-coupled electron transfer (PCET) using protons of TEOA dissolved in a CH3CN solution in a CO2 atmosphere as the initial step of the catalytic cycle. Although the mixed system of the nonsubstituted 1,10-phenanthroline generates a stable tris(phenanthroline)-Fe(II) complex in solution, this complex could not function as a CO2 reduction catalyst. The mechanism in which R1R2p interacts with the Fe ion after PCET was proposed for this efficient photocatalytic CO2 reduction. The proposed photocatalytic system using the 2,9-di-sec-butyl-phenanthroline ligand could produce CO with high efficiency (quantum yield of 8.2%) combined with a dinuclear Cu(I) complex as a photosensitizer.
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Affiliation(s)
- Hiroyuki Takeda
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma 376-8515, Japan
| | - Mina Irimajiri
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Toshihide Mizutani
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Shunsuke Nozawa
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Yuna Matsuura
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma 376-8515, Japan
| | - Masao Kurosu
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma 376-8515, Japan
| | - Osamu Ishitani
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8526, Japan
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Bera A, Sheet D, Paine TK. Iron(II)-α-keto acid complexes of tridentate ligands on gold nanoparticles: the effect of ligand geometry and immobilization on their dioxygen-dependent reactivity. Dalton Trans 2023; 52:1062-1073. [PMID: 36602242 DOI: 10.1039/d2dt02433k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Two mononuclear nonheme iron(II)-benzoylformate (BF) complexes [(6Me2-Me-BPA)Fe(BF)](ClO4) (1a) and [(6Me3-TPMM)Fe(BF)](ClO4) (1b) of tridentate nitrogen donor ligands, bis((6-methylpyridin-2-yl)methyl)(N-methyl)amine (6Me2-Me-BPA) and tris(2-(6-methyl)pyridyl)methoxymethane (6Me3-TPMM), were isolated and characterized. The structural characterization of iron(II)-chloro complexes indicates that the ligand 6Me2-Me-BPA binds to the iron(II) centre in a meridional fashion, whereas 6Me3-TPMM behaves as a facial ligand. Both the ligands were functionalized with terminal thiol for immobilization on gold nanoparticles (AuNPs), and the corresponding iron(II) complexes [(6Me2-BPASH)Fe(BF)(ClO4)]@C8Au (2a) and [(6Me3-TPMSH)Fe(BF)(ClO4)]@C8Au (2b) were prepared to probe the effect of immobilization on their ability to perform bioinspired oxidation reactions. All the complexes react with dioxygen to display the oxidative decarboxylation of the coordinated benzoylformate, but the complexes supported by 6Me3-TPMM and its thiol-appended ligand display faster reactivity compared to their analogues with the 6Me2-Me-BPA-derived ligands. In each case, an electrophilic iron-oxygen oxidant was intercepted as the active oxidant generated from dioxygen. The immobilized complexes (2a and 2b) display enhanced O2-dependent reactivity in oxygen-atom transfer reactions (OAT) and hydrogen-atom transfer (HAT) reactions compared to their homogeneous congeners (1a and 1b). Furthermore, the immobilized complex 2b displays catalytic OAT reactions. This study supports that the ligand geometry and immobilization on AuNPs influence the dioxygen-dependent reactivity of the complexes.
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Affiliation(s)
- Abhijit Bera
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India.
| | - Debobrata Sheet
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India.
| | - Tapan Kanti Paine
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India.
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Warm K, Kass D, Haumann M, Dau H, Ray K. Modelling the coordination environment in α‐ketoglutarate dependent oxygenases – a comparative study on the effect of N‐ vs. O‐ligation. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202100310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Katrin Warm
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Dustin Kass
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Michael Haumann
- Institut für Physik Freie Universität Berlin Arnimallee 14 14195 Berlin Germany
| | - Holger Dau
- Institut für Physik Freie Universität Berlin Arnimallee 14 14195 Berlin Germany
| | - Kallol Ray
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
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Ramanaiah KV, Ramkumar V, Murthy NN. High-spin iron(II) complexes of halides and pseudo-halides with biphenyl-appended N,N′-bidentate ligand: X-ray structural and spectroscopic studies. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Li J, Molenda MA, Biros SM, Staples RJ, Chavez FA. Assembly of a mononuclear ferrous site using a bulky aldehyde-imidazole ligand. Inorganica Chim Acta 2017; 464:152-156. [PMID: 29238096 PMCID: PMC5724793 DOI: 10.1016/j.ica.2017.05.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A new iron(II) complex has been prepared and characterized. [Fe(TrImA)2(OTf)2] (1, TrImA = 1-Tritylimidazole-4-carboxaldehyde). The solid state structure of 1 has been determined by X-ray crystallography. Compound 1 crystallizes in monoclinic space group P21/c, with a = 10.8323(18) Å, b = 8.1606(13) Å and c = 24.818(4) Å. The iron center is coordinated to two imidazole groups, two pendant aldehyde-derived carbonyl oxygens and two triflate oxygens. The complex is high spin between 300 and 20 K as indicated by variable field variable temperature magnetic measurements. A fit of the magnetic data yielded g = 2.17 and D = 4.05 cm-1. A large HOMO-LUMO gap energy (4.49 eV) exists for 1 indicating high stability.
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Affiliation(s)
- Jia Li
- Department of Chemistry, Oakland University, Rochester, MI 48309, USA
| | - Monika A Molenda
- Department of Chemistry, Oakland University, Rochester, MI 48309, USA
| | - Shannon M Biros
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
| | - Richard J Staples
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
| | - Ferman A Chavez
- Department of Chemistry, Oakland University, Rochester, MI 48309, USA
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Qiao QA, Li Q, Liu C, Sun X, Cai H, Sun L, Wang H. A Theoretical Study on the Mechanism of Decarboxylations for Hydroxymandelate Synthase. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qing-An Qiao
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Qiuxian Li
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Changchun Liu
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Xiao Sun
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Honglan Cai
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Lixiang Sun
- School of Chemistry and Materials Science; Ludong University; Yantai 264025 China
| | - Huayang Wang
- School of Physics and Optoelectronic Engineering; Ludong University; Yantai 264025 China
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Nakamura T, Yoshida E, Fujie T, Ogata F, Yamamoto C, Kawasaki N, Kaji T. Synergistic cytotoxicity caused by forming a complex of copper and 2,9-dimethyl-1,10-phenanthroline in cultured vascular endothelial cells. J Toxicol Sci 2017; 42:683-687. [DOI: 10.2131/jts.42.683] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Takehiro Nakamura
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
- Faculty of Pharmacy, Kindai University
| | - Eiko Yoshida
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Tomoya Fujie
- Faculty of Pharmaceutical Sciences, Toho University
| | | | | | | | - Toshiyuki Kaji
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
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Sheet D, Paine TK. Aerobic alcohol oxidation and oxygen atom transfer reactions catalyzed by a nonheme iron(ii)-α-keto acid complex. Chem Sci 2016; 7:5322-5331. [PMID: 30155184 PMCID: PMC6020522 DOI: 10.1039/c6sc01476c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 04/23/2016] [Indexed: 11/21/2022] Open
Abstract
An iron(ii)-benzoylformate complex of a monoanionic facial tridentate ligand catalyzes the aerobic oxidation of sulfides to sulfoxides, alkenes to epoxides, and alcohols to the corresponding carbonyl compounds.
α-Ketoglutarate-dependent enzymes catalyze many important biological oxidation/oxygenation reactions. Iron(iv)–oxo intermediates have been established as key oxidants in these oxidation reactions. While most reported model iron(ii)–α-keto acid complexes exhibit stoichiometric reactivity, selective oxidation of substrates with dioxygen catalyzed by biomimetic iron(ii)–α-keto acid complexes remains unexplored. In this direction, we have investigated the ability of an iron(ii) complex [(TpPh,Me)FeII(BF)] (1) (TpPh,Me = hydrotris(3-phenyl-5-methylpyrazolyl)borate and BF = monoanionic benzoylformate) to catalyze the aerobic oxidation of organic substrates. An iron–oxo oxidant, intercepted in the reaction of 1 with O2, selectively oxidizes sulfides to sulfoxides, alkenes to epoxides, and alcohols to the corresponding carbonyl compounds. The oxidant from 1 is able to hydroxylate the benzylic carbon of phenylacetic acid to afford mandelic acid with the incorporation of one oxygen atom from O2 into the product. The iron(ii)–benzoylformate complex oxidatively converts phenoxyacetic acids to the corresponding phenols, thereby mimicking the function of iron(ii)–α-ketoglutarate-dependent 2,4-dichlorophenoxyacetate dioxygenase (TfdA). Furthermore, complex 1 exhibits catalytic aerobic oxidation of alcohols and oxygen atom transfer reactions with multiple turnovers.
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Affiliation(s)
- Debobrata Sheet
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Jadavpur , Kolkata 700032 , India . ; ; Tel: +91-33-2473-4971
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Jadavpur , Kolkata 700032 , India . ; ; Tel: +91-33-2473-4971
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Abstract
In order to address how diverse metalloprotein active sites, in particular those containing iron and copper, guide O₂binding and activation processes to perform diverse functions, studies of synthetic models of the active sites have been performed. These studies have led to deep, fundamental chemical insights into how O₂coordinates to mono- and multinuclear Fe and Cu centers and is reduced to superoxo, peroxo, hydroperoxo, and, after O-O bond scission, oxo species relevant to proposed intermediates in catalysis. Recent advances in understanding the various factors that influence the course of O₂activation by Fe and Cu complexes are surveyed, with an emphasis on evaluating the structure, bonding, and reactivity of intermediates involved. The discussion is guided by an overarching mechanistic paradigm, with differences in detail due to the involvement of disparate metal ions, nuclearities, geometries, and supporting ligands providing a rich tapestry of reaction pathways by which O₂is activated at Fe and Cu sites.
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Gavette JV, Klug CM, Zakharov LN, Shores MP, Haley MM, Johnson DW. Intramolecular N-H···Cl hydrogen bonds in the outer coordination sphere of a bipyridyl bisurea-based ligand stabilize a tetrahedral FeLCl2 complex. Chem Commun (Camb) 2014; 50:7173-5. [PMID: 24854889 PMCID: PMC4112994 DOI: 10.1039/c4cc02297a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/14/2014] [Indexed: 11/21/2022]
Abstract
A bipyridyl-based anion receptor is utilized as a ligand in a tetrahedral FeCl2 complex and demonstrates secondary coordination sphere influence through intramolecular hydrogen bonding to the chloride ligands as evidenced by X-ray crystallography.
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Affiliation(s)
- Jesse V. Gavette
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
| | - Christina M. Klug
- Department of Chemistry , Colorado State University , Fort Collins , CO 80523-1872 , USA . ; Tel: +1-970-491-7235
| | - Lev N. Zakharov
- CAMCOR—Center for Advanced Materials Characterization in Oregon , University of Oregon , Eugene , OR 97403-1253 , USA
| | - Matthew P. Shores
- Department of Chemistry , Colorado State University , Fort Collins , CO 80523-1872 , USA . ; Tel: +1-970-491-7235
| | - Michael M. Haley
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
| | - Darren W. Johnson
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
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Paria S, Chatterjee S, Paine TK. Reactivity of an Iron–Oxygen Oxidant Generated upon Oxidative Decarboxylation of Biomimetic Iron(II) α-Hydroxy Acid Complexes. Inorg Chem 2014; 53:2810-21. [DOI: 10.1021/ic402443r] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sayantan Paria
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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Banerjee S, Halder P, Paine TK. Probing the Reactivity of Redox-Active 2-Aminophenolates on Iron Complexes of a Carbanionic N3C Donor Ligand. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201300630] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sheet D, Halder P, Paine TK. Enhanced Reactivity of a Biomimetic Iron(II) α-Keto Acid Complex through Immobilization on Functionalized Gold Nanoparticles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305994] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sheet D, Halder P, Paine TK. Enhanced Reactivity of a Biomimetic Iron(II) α-Keto Acid Complex through Immobilization on Functionalized Gold Nanoparticles. Angew Chem Int Ed Engl 2013; 52:13314-8. [DOI: 10.1002/anie.201305994] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/29/2013] [Indexed: 11/05/2022]
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Chatterjee S, Sheet D, Paine TK. Catalytic and regiospecific extradiol cleavage of catechol by a biomimetic iron complex. Chem Commun (Camb) 2013; 49:10251-3. [DOI: 10.1039/c3cc44124e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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