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Biologically inspired nonheme iron complex-catalyzed cis-dihydroxylation of alkenes modeling Rieske dioxygenases. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Doiuchi D, Uchida T. Catalytic Highly Regioselective C-H Oxygenation Using Water as the Oxygen Source: Preparation of 17O/ 18O-Isotope-Labeled Compounds. Org Lett 2021; 23:7301-7305. [PMID: 34494843 DOI: 10.1021/acs.orglett.1c02812] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We found that the oxygen atom of water is activated to iodosylbenzene derivatives via reversible hydrolysis of PhI(OOCR)2 and can be used to the oxygen source for ruthenium(bpga)-catalyzed site-selective C-H oxygenation. Ru(bpga)/PhI(OOCR)2/H2O system, sterically less bulky methinic and methylenic C-H bonds in various compounds can be converted to desired oxygen functional groups in a site-selective manner. Using this method, oxygen-isotope labeled compounds such as d-[3-17O/18O]-mannose can be prepared in a multigram scale.
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Affiliation(s)
- Daiki Doiuchi
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tatsuya Uchida
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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3
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Abstract
The review describes articles that provide data on the synthesis and study of the properties of catalysts for the oxidation of alkanes, olefins, and alcohols. These catalysts are polynuclear complexes of iron, copper, osmium, nickel, manganese, cobalt, vanadium. Such complexes for example are: [Fe2(HPTB)(m-OH)(NO3)2](NO3)2·CH3OH·2H2O, where HPTB-¼N,N,N0,N0-tetrakis(2-benzimidazolylmethyl)-2-hydroxo-1,3-diaminopropane; complex [(PhSiO1,5)6]2[CuO]4[NaO0.5]4[dppmO2]2, where dppm-1,1-bis(diphenylphosphino)methane; (2,3-η-1,4-diphenylbut-2-en-1,4-dione)undecacarbonyl triangulotriosmium; phenylsilsesquioxane [(PhSiO1.5)10(CoO)5(NaOH)]; bi- and tri-nuclear oxidovanadium(V) complexes [{VO(OEt)(EtOH)}2(L2)] and [{VO(OMe)(H2O)}3(L3)]·2H2O (L2 = bis(2-hydroxybenzylidene)terephthalohydrazide and L3 = tris(2-hydroxybenzylidene)benzene-1,3,5-tricarbohydrazide); [Mn2L2O3][PF6]2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane). For comparison, articles are introduced describing catalysts for the oxidation of alkanes and alcohols with peroxides, which are simple metal salts or mononuclear metal complexes. In many cases, polynuclear complexes exhibit higher activity compared to mononuclear complexes and exhibit increased regioselectivity, for example, in the oxidation of linear alkanes. The review contains a description of some of the mechanisms of catalytic reactions. Additionally presented are articles comparing the rates of oxidation of solvents and substrates under oxidizing conditions for various catalyst structures, which allows researchers to conclude about the nature of the oxidizing species. This review is focused on recent works, as well as review articles and own original studies of the authors.
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4
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Das A, Nutting JE, Stahl SS. Electrochemical C-H oxygenation and alcohol dehydrogenation involving Fe-oxo species using water as the oxygen source. Chem Sci 2019; 10:7542-7548. [PMID: 31588305 PMCID: PMC6761876 DOI: 10.1039/c9sc02609f] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/25/2019] [Indexed: 11/30/2022] Open
Abstract
High-valent iron-oxo complexes are key intermediates in C-H functionalization reactions. Herein, we report the generation of a (TAML)Fe-oxo species (TAML = tetraamido macrocyclic ligand) via electrochemical proton-coupled oxidation of the corresponding (TAML)FeIII-OH2 complex. Cyclic voltammetry (CV) and spectroelectrochemical studies are used to elucidate the relevant (TAML)Fe redox processes and determine the predominant (TAML)Fe species present in solution during bulk electrolysis. Evidence for iron(iv) and iron(v) species is presented, and these species are used in the electrochemical oxygenation of benzylic C-H bonds and dehydrogenation of alcohols to ketones.
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Affiliation(s)
- Amit Das
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , USA .
| | - Jordan E Nutting
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , USA .
| | - Shannon S Stahl
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , USA .
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5
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Lloret-Fillol J, Costas M. Water oxidation at base metal molecular catalysts. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2019. [DOI: 10.1016/bs.adomc.2019.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Codolà Z, Gamba I, Acuña-Parés F, Casadevall C, Clémancey M, Latour JM, Luis JM, Lloret-Fillol J, Costas M. Design of Iron Coordination Complexes as Highly Active Homogenous Water Oxidation Catalysts by Deuteration of Oxidation-Sensitive Sites. J Am Chem Soc 2018; 141:323-333. [PMID: 30497265 DOI: 10.1021/jacs.8b10211] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The nature of the oxidizing species in water oxidation reactions with chemical oxidants catalyzed by α-[Fe(OTf)2(mcp)] (1α; mcp = N, N'-dimethyl- N, N'-bis(pyridin-2-ylmethyl)cyclohexane-1,2-diamine, OTf = trifluoromethanesulfonate anion) and β-[Fe(OTf)2(mcp)] (1β) has been investigated. Mössbauer spectroscopy provides definitive evidence that 1α and 1β generate oxoiron(IV) species as the resting state. Decomposition paths of the catalysts have been investigated by identifying and quantifying ligand fragments that form upon degradation. This analysis correlates the water oxidation activity of 1α and 1β with stability against oxidative damage of the ligand via aliphatic C-H oxidation. The site of degradation and the relative stability against oxidative degradation are shown to be dependent on the topology of the catalyst. Furthermore, the mechanisms of catalyst degradation have been rationalized by computational analyses, which also explain why the topology of the catalyst enforces different oxidation-sensitive sites. This information has served in creating catalysts where sensitive C-H bonds have been replaced by C-D bonds. The deuterated analogues D4-α-[Fe(OTf)2(mcp)] (D4-1α), D4-β-[Fe(OTf)2(mcp)] (D4-1β), and D6-β-[Fe(OTf)2(mcp)] (D6-1β) were prepared, and their catalytic activity has been studied. D4-1α proves to be an extraordinarily active and efficient catalyst (up to 91% of O2 yield); it exhibits initial reaction rates identical with those of its protio analogue, but it is substantially more robust toward oxidative degradation and yields more than 3400 TON ( n(O2)/ n(Fe)). Altogether this evidences that the water oxidation catalytic activity is performed by a well-defined coordination complex and not by iron oxides formed after oxidative degradation of the ligands.
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Affiliation(s)
- Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Ilaria Gamba
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Ferran Acuña-Parés
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain
| | - Martin Clémancey
- Université Grenoble Alpes , CEA, CNRS, LCBM, pmb , F-38000 Grenoble , France
| | - Jean-Marc Latour
- Université Grenoble Alpes , CEA, CNRS, LCBM, pmb , F-38000 Grenoble , France
| | - Josep M Luis
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain.,Catalan Institution for Research and Advanced Studies (ICREA) , Passeig Lluïs Companys, 23 , 08010 , Barcelona , Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
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7
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Annunziata A, Esposito R, Gatto G, Cucciolito ME, Tuzi A, Macchioni A, Ruffo F. Iron(III) Complexes with Cross-Bridged Cyclams: Synthesis and Use in Alcohol and Water Oxidation Catalysis. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800451] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alfonso Annunziata
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II and CIRCC; Complesso Universitario di Monte S. Angelo; Via Cintia 21 80126 Napoli Italy
| | - Roberto Esposito
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II and CIRCC; Complesso Universitario di Monte S. Angelo; Via Cintia 21 80126 Napoli Italy
| | - Giordano Gatto
- Department of Chemistry; Biology and Biochemistry; University of Perugia and CIRCC; Via Elce di Sotto, 8 06123 Perugia Italy
| | - Maria Elena Cucciolito
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II and CIRCC; Complesso Universitario di Monte S. Angelo; Via Cintia 21 80126 Napoli Italy
| | - Angela Tuzi
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II and CIRCC; Complesso Universitario di Monte S. Angelo; Via Cintia 21 80126 Napoli Italy
| | - Alceo Macchioni
- Department of Chemistry; Biology and Biochemistry; University of Perugia and CIRCC; Via Elce di Sotto, 8 06123 Perugia Italy
| | - Francesco Ruffo
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II and CIRCC; Complesso Universitario di Monte S. Angelo; Via Cintia 21 80126 Napoli Italy
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8
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Hou J, Vázquez-González M, Fadeev M, Liu X, Lavi R, Willner I. Catalyzed and Electrocatalyzed Oxidation of l-Tyrosine and l-Phenylalanine to Dopachrome by Nanozymes. NANO LETTERS 2018; 18:4015-4022. [PMID: 29745234 DOI: 10.1021/acs.nanolett.8b01522] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Catalyzed oxygen insertion into C-H bonds represents a continuous challenge in chemistry. Particularly, driving this process at ambient temperature and aqueous media represents a "holy grail" in catalysis. We report on the catalyzed cascade transformations of l-tyrosine or l-phenylalanine to dopachrome in the presence of l-ascorbic acid/H2O2 as oxidizing mixture and CuFe-Prussian Blue-like nanoparticles, Fe3O4 nanoparticles or Au nanoparticles as catalysts. The process involves the primary transformation of l-tyrosine to l-DOPA that is further oxidized to dopachrome. The transformation of l-phenylalanine to dopachrome in the presence of CuFe-Prussian Blue-like nanoparticles and l-ascorbic acid/H2O2 involves in the first step the formation of l-tyrosine and, subsequently, the operation of the catalytic oxidation cascade of l-tyrosine to l-DOPA and dopachrome. Electron spin resonance experiments demonstrate that ascorbate radicals and hydroxyl radicals play cooperative functions in driving the different oxygen-insertion processes. In addition, the aerobic elecrocatalyzed oxidation of l-tyrosine to dopachrome in the presence of naphthoquinone-modified Fe3O4 nanoparticles and l-ascorbic acid is demonstrated. In this system, magnetic-field attraction of the naphthoquinone-modified Fe3O4 nanoparticles onto the electrode allows the quinone-mediated electrocatalyzed reduction of O2 to H2O2 (bias potential -0.5 V vs SCE). The electrogenerated H2O2 is then utilized to promote the transformation of l-tyrosine to dopachrome in the presence of l-ascorbic acid and Fe3O4 catalyst.
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Affiliation(s)
- Jianwen Hou
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Margarita Vázquez-González
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Michael Fadeev
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Xia Liu
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Ronit Lavi
- Department of Chemistry , Bar-Ilan University , Ramat Gan 52 900 , Israel
| | - Itamar Willner
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
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9
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Tse CW, Liu Y, Wai-Shan Chow T, Ma C, Yip WP, Chang XY, Low KH, Huang JS, Che CM. cis-Oxoruthenium complexes supported by chiral tetradentate amine (N 4) ligands for hydrocarbon oxidations. Chem Sci 2018; 9:2803-2816. [PMID: 29780453 PMCID: PMC5943683 DOI: 10.1039/c7sc05224c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 02/01/2018] [Indexed: 12/31/2022] Open
Abstract
We report the first examples of ruthenium complexes cis-[(N4)RuIIICl2]+ and cis-[(N4)RuII(OH2)2]2+ supported by chiral tetradentate amine ligands (N4), together with a high-valent cis-dioxo complex cis-[(N4)RuVI(O)2]2+ supported by the chiral N4 ligand mcp (mcp = N,N'-dimethyl-N,N'-bis(pyridin-2-ylmethyl)cyclohexane-1,2-diamine). The X-ray crystal structures of cis-[(mcp)RuIIICl2](ClO4) (1a), cis-[(Me2mcp)RuIIICl2]ClO4 (2a) and cis-[(pdp)RuIIICl2](ClO4) (3a) (Me2mcp = N,N'-dimethyl-N,N'-bis((6-methylpyridin-2-yl)methyl)cyclohexane-1,2-diamine, pdp = 1,1'-bis(pyridin-2-ylmethyl)-2,2'-bipyrrolidine)) show that the ligands coordinate to the ruthenium centre in a cis-α configuration. In aqueous solutions, proton-coupled electron-transfer redox couples were observed for cis-[(mcp)RuIII(O2CCF3)2]ClO4 (1b) and cis-[(pdp)RuIII(O3SCF3)2]CF3SO3 (3c'). Electrochemical analyses showed that the chemically/electrochemically generated cis-[(mcp)RuVI(O)2]2+ and cis-[(pdp)RuVI(O)2]2+ complexes are strong oxidants with E° = 1.11-1.13 V vs. SCE (at pH 1) and strong H-atom abstractors with DO-H = 90.1-90.8 kcal mol-1. The reaction of 1b or its (R,R)-mcp counterpart with excess (NH4)2[CeIV(NO3)6] (CAN) in aqueous medium afforded cis-[(mcp)RuVI(O)2](ClO4)2 (1e) or cis-[((R,R)-mcp)RuVI(O)2](ClO4)2 (1e*), respectively, a strong oxidant with E(RuVI/V) = 0.78 V (vs. Ag/AgNO3) in acetonitrile solution. Complex 1e oxidized various hydrocarbons, including cyclohexane, in acetonitrile at room temperature, affording alcohols and/or ketones in up to 66% yield. Stoichiometric oxidations of alkenes by 1e or 1e* in t BuOH/H2O (5 : 1 v/v) afforded diols and aldehydes in combined yields of up to 98%, with moderate enantioselectivity obtained for the reaction using 1e*. The cis-[(pdp)RuII(OH2)2]2+ (3c)-catalysed oxidation of saturated C-H bonds, including those of ethane and propane, with CAN as terminal oxidant was also demonstrated.
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Affiliation(s)
- Chun-Wai Tse
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,HKU Shenzhen Institute of Research and Innovation , Shenzhen , Guangdong 518053 , China
| | - Yungen Liu
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,Department of Chemistry , Southern University of Science of Technology , Shenzhen , Guangdong 518055 , China
| | - Toby Wai-Shan Chow
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Chaoqun Ma
- Department of Chemistry , Southern University of Science of Technology , Shenzhen , Guangdong 518055 , China
| | - Wing-Ping Yip
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Xiao-Yong Chang
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Kam-Hung Low
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Jie-Sheng Huang
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,HKU Shenzhen Institute of Research and Innovation , Shenzhen , Guangdong 518053 , China.,Department of Chemistry , Southern University of Science of Technology , Shenzhen , Guangdong 518055 , China
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10
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Call A, Franco F, Kandoth N, Fernández S, González-Béjar M, Pérez-Prieto J, Luis JM, Lloret-Fillol J. Understanding light-driven H 2 evolution through the electronic tuning of aminopyridine cobalt complexes. Chem Sci 2017; 9:2609-2619. [PMID: 29675253 PMCID: PMC5892349 DOI: 10.1039/c7sc04328g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/18/2017] [Indexed: 11/25/2022] Open
Abstract
Electronic effects provide a general mechanistic scenario for rationalizing photocatalytic water reduction activity with aminopyridine cobalt complexes.
A new family of cobalt complexes with the general formula [CoII(OTf)2(Y,XPyMetacn)] (1R, Y,XPyMetacn = 1-[(4-X-3,5-Y-2-pyridyl)methyl]-4,7-dimethyl-1,4,7-triazacyclononane, (X = CN (1CN), CO2Et (1CO2Et), Cl (1Cl), H (1H), NMe2 (1NMe2)) where (Y = H, and X = OMe when Y = Me (1DMM)) is reported. We found that the electronic tuning of the Y,XPyMetacn ligand not only has an impact on the electronic and structural properties of the metal center, but also allows for a systematic water-reduction-catalytic control. In particular, the increase of the electron-withdrawing character of the pyridine moiety promotes a 20-fold enhancement of the catalytic outcome. By UV-Vis spectroscopy, luminescence quenching studies and Transient Absorption Spectroscopy (TAS), we have studied the direct reaction of the photogenerated [IrIII(ppy)2(bpy˙–)] (PSIr) species to form the elusive CoI intermediates. In particular, our attention is focused on the effect of the ligand architecture in this elemental step of the catalytic mechanism. Finally, kinetic isotopic experiments together with DFT calculations provide complementary information about the rate-determining step of the catalytic cycle.
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Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Noufal Kandoth
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Sergio Fernández
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - María González-Béjar
- Instituto de Ciencia Molecular (ICMol) , Universidad de Valencia , C/Catedrático José Beltrán 2, Paterna , E46980 Valencia , Spain
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICMol) , Universidad de Valencia , C/Catedrático José Beltrán 2, Paterna , E46980 Valencia , Spain
| | - Josep M Luis
- Institut de Química Computacional i Catàlisi (IQCC) , Departament de Química , Universitat de Girona , Campus Montilivi , E17071 Girona , Catalonia , Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain . .,Catalan Institution for Research and Advanced Studies (ICREA) , Passeig Lluïs Companys, 23 , 08010 , Barcelona , Spain
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11
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Sackville EV, Kociok-Köhn G, Hintermair U. Ligand Tuning in Pyridine-Alkoxide Ligated Cp*IrIII Oxidation Catalysts. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00492] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Emma V. Sackville
- Centre
for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
| | - Gabriele Kociok-Köhn
- Chemical
Characterisation and Analysis Facility, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
| | - Ulrich Hintermair
- Centre
for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
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12
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Borrell M, Costas M. Mechanistically Driven Development of an Iron Catalyst for Selective Syn-Dihydroxylation of Alkenes with Aqueous Hydrogen Peroxide. J Am Chem Soc 2017; 139:12821-12829. [DOI: 10.1021/jacs.7b07909] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Margarida Borrell
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Miquel Costas
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
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13
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14
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Abstract
Ubiquitous tyrosinase catalyses the aerobic oxidation of phenols to catechols through the binuclear copper centres. Here, inspired by the Fischer indole synthesis, we report an iridium-catalysed tyrosinase-like approach to catechols, employing an oxyacetamide-directed C–H hydroxylation on phenols. This method achieves one-step, redox-neutral synthesis of catechols with diverse substituent groups under mild conditions. Mechanistic studies confirm that the directing group (DG) oxyacetamide acts as the oxygen source. This strategy has been applied to the synthesis of different important catechols with fluorescent property and bioactivity from the corresponding phenols. Finally, our method also provides a convenient route to 18O-labelled catechols using 18O-labelled acetic acid. Catechols are common structural motifs in bioactive molecules and synthetic building blocks. Here the authors report a method to convert phenol derivatives into catechols via an iridium-catalysed redox-neutral C–H hydroxylation, giving diversely substituted products under mild conditions.
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15
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Casadevall C, Codolà Z, Costas M, Lloret-Fillol J. Spectroscopic, Electrochemical and Computational Characterisation of Ru Species Involved in Catalytic Water Oxidation: Evidence for a [Ru(V) (O)(Py2 (Me) tacn)] Intermediate. Chemistry 2016; 22:10111-26. [PMID: 27324949 DOI: 10.1002/chem.201600584] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Indexed: 01/09/2023]
Abstract
A new family of ruthenium complexes based on the N-pentadentate ligand Py2 (Me) tacn (N-methyl-N',N''-bis(2-picolyl)-1,4,7-triazacyclononane) has been synthesised and its catalytic activity has been studied in the water-oxidation (WO) reaction. We have used chemical oxidants (ceric ammonium nitrate and NaIO4 ) to generate the WO intermediates [Ru(II) (OH2 )(Py2 (Me) tacn)](2+) , [Ru(III) (OH2 )(Py2 (Me) tacn)](3+) , [Ru(III) (OH)(Py2 (Me) tacn)](2+) and [Ru(IV) (O)(Py2 (Me) tacn)](2+) , which have been characterised spectroscopically. Their relative redox and pH stability in water has been studied by using UV/Vis and NMR spectroscopies, HRMS and spectroelectrochemistry. [Ru(IV) (O)(Py2 (Me) tacn)](2+) has a long half-life (>48 h) in water. The catalytic cycle of WO has been elucidated by using kinetic, spectroscopic, (18) O-labelling and theoretical studies, and the conclusion is that the rate-determining step is a single-site water nucleophilic attack on a metal-oxo species. Moreover, [Ru(IV) (O)(Py2 (Me) tacn)](2+) is proposed to be the resting state under catalytic conditions. By monitoring Ce(IV) consumption, we found that the O2 evolution rate is redox-controlled and independent of the initial concentration of Ce(IV) . Based on these facts, we propose herein that [Ru(IV) (O)(Py2 (Me) tacn)](2+) is oxidised to [Ru(V) (O)(Py2 (Me) tacn)](2+) prior to attack by a water molecule to give [Ru(III) (OOH)(Py2 (Me) tacn)](2+) . Finally, it is shown that the difference in WO reactivity between the homologous iron and ruthenium [M(OH2 )(Py2 (Me) tacn)](2+) (M=Ru, Fe) complexes is due to the difference in the redox stability of the key M(V) (O) intermediate. These results contribute to a better understanding of the WO mechanism and the differences between iron and ruthenium complexes in WO reactions.
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Affiliation(s)
- Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007, Tarragona, Spain
| | - Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and, Departament de Química, Universitat de Girona Campus Montilivi, 17071, Girona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and, Departament de Química, Universitat de Girona Campus Montilivi, 17071, Girona, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007, Tarragona, Spain.
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain.
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16
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Hu J, Lan T, Sun Y, Chen H, Yao J, Rao Y. Unactivated C(sp(3))-H hydroxylation through palladium catalysis with H2O as the oxygen source. Chem Commun (Camb) 2016; 51:14929-32. [PMID: 26307027 DOI: 10.1039/c5cc04952k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel palladium catalyzed hydroxylation of unactivated aliphatic C(sp(3))-H bonds was successfully developed. Different from conventional methods, water serves as the hydroxyl group source in the reaction. This new reaction demonstrates good reactivity and broad functional group tolerance. The C-H hydroxylated products can be readily transformed into various highly valuable chemicals via known transformations. Based on experimental and theoretical studies, a mechanism involving the Pd(II)/(IV) pathway is proposed for this hydroxylation reaction.
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Affiliation(s)
- Jiantao Hu
- MOE Key Laboratory of Protein Sciences, Department of Pharmacology and Pharmaceutical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China.
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17
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Manck S, Sarkar B. Use of EPR Spectroscopy to Unravel Reaction Mechanisms in (Catalytic) Bond Activation Reactions: Some Selected Examples. Top Catal 2015. [DOI: 10.1007/s11244-015-0416-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Codolà Z, Gómez L, Kleespies ST, Que L, Costas M, Lloret-Fillol J. Evidence for an oxygen evolving iron-oxo-cerium intermediate in iron-catalysed water oxidation. Nat Commun 2015; 6:5865. [PMID: 25609387 DOI: 10.1038/ncomms6865] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 11/17/2014] [Indexed: 02/08/2023] Open
Abstract
The non-haem iron complex α-[Fe(II)(CF3SO3)2(mcp)] (mcp=(N,N'-dimethyl-N,N'-bis(2-pyridylmethyl)-1,2-cis-diaminocyclohexane) reacts with Ce(IV) to oxidize water to O2, representing an iron-based functional model for the oxygen evolving complex of photosystem II. Here we trap an intermediate, characterized by cryospray ionization high resolution mass spectrometry and resonance Raman spectroscopy, and formulated as [(mcp)Fe(IV)(O)(μ-O)Ce(IV)(NO3)3](+), the first example of a well-characterized inner-sphere complex to be formed in cerium(IV)-mediated water oxidation. The identification of this reactive Fe(IV)-O-Ce(IV) adduct may open new pathways to validate mechanistic notions of an analogous Mn(V)-O-Ca(II) unit in the oxygen evolving complex that is responsible for carrying out the key O-O bond forming step.
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Affiliation(s)
- Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
| | - Laura Gómez
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St S.E., Minneapolis, Minnesota 55455, USA
| | - Scott T Kleespies
- Serveis Tècnics de Recerca (STR), Parc Cientific i Tecnològic, Universitat de Girona, 17003 Girona, Spain
| | - Lawrence Que
- Serveis Tècnics de Recerca (STR), Parc Cientific i Tecnològic, Universitat de Girona, 17003 Girona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
| | - Julio Lloret-Fillol
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
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19
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Lindhorst AC, Haslinger S, Kühn FE. Molecular iron complexes as catalysts for selective C–H bond oxygenation reactions. Chem Commun (Camb) 2015; 51:17193-212. [DOI: 10.1039/c5cc07146a] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article summarises recent developments in homogeneous C–H bond oxygenation catalysed by molecular iron complexes.
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Affiliation(s)
- A. C. Lindhorst
- Chair of Inorganic Chemistry/Molecular Catalysis
- Technische Universität München (TUM)
- Department of Chemistry/Catalysis Research Center
- D-85747 Garching bei München
- Germany
| | - S. Haslinger
- Chair of Inorganic Chemistry/Molecular Catalysis
- Technische Universität München (TUM)
- Department of Chemistry/Catalysis Research Center
- D-85747 Garching bei München
- Germany
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular Catalysis
- Technische Universität München (TUM)
- Department of Chemistry/Catalysis Research Center
- D-85747 Garching bei München
- Germany
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20
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Tan P, Kwong HK, Lau TC. Catalytic oxidation of water and alcohols by a robust iron(iii) complex bearing a cross-bridged cyclam ligand. Chem Commun (Camb) 2015; 51:12189-92. [DOI: 10.1039/c5cc02868j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iron(iii) complex functions as a molecular catalyst for both oxidation of water and alcohols using sodium periodate as an oxidant.
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Affiliation(s)
- Peng Tan
- Department of Biology and Chemistry and Institute of Molecular Functional Materials
- City University of Hong Kong
- Hong Kong
- China
| | - Hoi-Ki Kwong
- Department of Biology and Chemistry and Institute of Molecular Functional Materials
- City University of Hong Kong
- Hong Kong
- China
| | - Tai-Chu Lau
- Department of Biology and Chemistry and Institute of Molecular Functional Materials
- City University of Hong Kong
- Hong Kong
- China
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21
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Hassanpour A, Acuña-Parés F, Luis JM, Cusso O, Morales de la Rosa S, Campos-Martín JM, Fierro JLG, Costas M, Lloret-Fillol J, Mas-Ballesté R. H2 oxidation versus organic substrate oxidation in non-heme iron mediated reactions with H2O2. Chem Commun (Camb) 2015; 51:14992-5. [DOI: 10.1039/c5cc06402c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A mixture of α-[Fe(CF3SO3)2(BPMCN)] and H2O2 is able to oxidize H2. However, the presence of acetic acid enhances organic substrate oxidation.
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Affiliation(s)
- Azin Hassanpour
- Departamento de Química Inorgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - Ferran Acuña-Parés
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Josep M. Luis
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Olaf Cusso
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | | | | | - Jose L. G. Fierro
- Instituto de Catálisis y Petroleoquímica
- CSIC
- Marie Curie
- 2
- 28049 Madrid
| | - Miquel Costas
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Julio Lloret-Fillol
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Rubén Mas-Ballesté
- Departamento de Química Inorgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
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22
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Coggins MK, Zhang MT, Chen Z, Song N, Meyer TJ. Single-Site Copper(II) Water Oxidation Electrocatalysis: Rate Enhancements with HPO42−as a Proton Acceptor at pH 8. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407131] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Coggins MK, Zhang MT, Chen Z, Song N, Meyer TJ. Single-Site Copper(II) Water Oxidation Electrocatalysis: Rate Enhancements with HPO42−as a Proton Acceptor at pH 8. Angew Chem Int Ed Engl 2014; 53:12226-30. [DOI: 10.1002/anie.201407131] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Indexed: 11/10/2022]
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24
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Codola Z, Lloret-Fillol J, Costas M. Aminopyridine Iron and Manganese Complexes as Molecular Catalysts for Challenging Oxidative Transformations. PROGRESS IN INORGANIC CHEMISTRY: VOLUME 59 2014. [DOI: 10.1002/9781118869994.ch07] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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25
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Wang D, Que L. Oxidation of water by a nonhaem diiron(IV) complex via proton-coupled electron transfer. Chem Commun (Camb) 2014; 49:10682-4. [PMID: 24108275 DOI: 10.1039/c3cc46391e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-potential nonhaem (μ-oxo)diiron(IV) complex was found to oxidize water to a hydroxyl radical via PCET, instead of forming an O-O bond. The rate-determining step requires a second water molecule, proposed to act as a base to promote proton transfer. This work shows that additional factors besides a high redox potential are required to effect O-O bond formation.
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Affiliation(s)
- Dong Wang
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, MN 55455, USA.
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26
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Ottenbacher RV, Samsonenko DG, Talsi EP, Bryliakov KP. Highly Enantioselective Bioinspired Epoxidation of Electron-Deficient Olefins with H2O2 on Aminopyridine Mn Catalysts. ACS Catal 2014. [DOI: 10.1021/cs500333c] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Roman V. Ottenbacher
- Novosibirsk State University, Pirogova
2, Novosibirsk 630090, Russian Federation
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
| | - Denis G. Samsonenko
- Novosibirsk State University, Pirogova
2, Novosibirsk 630090, Russian Federation
- Nikolaev Institute of Inorganic Chemistry, Pr. Lavrentieva 3, Novosibirsk 630090, Russian Federation
| | - Evgenii P. Talsi
- Novosibirsk State University, Pirogova
2, Novosibirsk 630090, Russian Federation
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
| | - Konstantin P. Bryliakov
- Novosibirsk State University, Pirogova
2, Novosibirsk 630090, Russian Federation
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
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27
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Coggins MK, Zhang MT, Vannucci AK, Dares CJ, Meyer TJ. Electrocatalytic water oxidation by a monomeric amidate-ligated Fe(III)-aqua complex. J Am Chem Soc 2014; 136:5531-4. [PMID: 24670044 DOI: 10.1021/ja412822u] [Citation(s) in RCA: 170] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The six-coordinate Fe(III)-aqua complex [Fe(III)(dpaq)(H2O)](2+) (1, dpaq is 2-[bis(pyridine-2-ylmethyl)]amino-N-quinolin-8-yl-acetamido) is an electrocatalyst for water oxidation in propylene carbonate-water mixtures. An electrochemical kinetics study has revealed that water oxidation occurs by oxidation to Fe(V)(O)(2+) followed by a reaction first order in catalyst and added water, respectively, with ko = 0.035(4) M(-1) s(-1) by the single-site mechanism found previously for Ru and Ir water oxidation catalysts. Sustained water oxidation catalysis occurs at a high surface area electrode to give O2 through at least 29 turnovers over an 15 h electrolysis period with a 45% Faradaic yield and no observable decomposition of the catalyst.
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Affiliation(s)
- Michael K Coggins
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
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28
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Acuña-Parés F, Codolà Z, Costas M, Luis JM, Lloret-Fillol J. Unraveling the Mechanism of Water Oxidation Catalyzed by Nonheme Iron Complexes. Chemistry 2014; 20:5696-707. [DOI: 10.1002/chem.201304367] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Indexed: 11/05/2022]
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29
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Company A, Sabenya G, González-Béjar M, Gómez L, Clémancey M, Blondin G, Jasniewski AJ, Puri M, Browne WR, Latour JM, Que L, Costas M, Pérez-Prieto J, Lloret-Fillol J. Triggering the generation of an iron(IV)-oxo compound and its reactivity toward sulfides by Ru(II) photocatalysis. J Am Chem Soc 2014; 136:4624-33. [PMID: 24568126 PMCID: PMC3985778 DOI: 10.1021/ja412059c] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
![]()
The
preparation of [FeIV(O)(MePy2tacn)]2+ (2, MePy2tacn = N-methyl-N,N-bis(2-picolyl)-1,4,7-triazacyclononane)
by reaction of [FeII(MePy2tacn)(solvent)]2+ (1) and PhIO in CH3CN and its full
characterization are described. This compound can also be prepared
photochemically from its iron(II) precursor by irradiation at 447
nm in the presence of catalytic amounts of [RuII(bpy)3]2+ as photosensitizer and a sacrificial electron
acceptor (Na2S2O8). Remarkably, the
rate of the reaction of the photochemically prepared compound 2 toward sulfides increases 150-fold under irradiation, and 2 is partially regenerated after the sulfide has been consumed;
hence, the process can be repeated several times. The origin of this
rate enhancement has been established by studying the reaction of
chemically generated compound 2 with sulfides under different
conditions, which demonstrated that both light and [RuII(bpy)3]2+ are necessary for the observed increase
in the reaction rate. A combination of nanosecond time-resolved absorption
spectroscopy with laser pulse excitation and other mechanistic studies
has led to the conclusion that an electron transfer mechanism is the
most plausible explanation for the observed rate enhancement. According
to this mechanism, the in-situ-generated [RuIII(bpy)3]3+ oxidizes the sulfide to form the corresponding
radical cation, which is eventually oxidized by 2 to
the corresponding sulfoxide.
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Affiliation(s)
- Anna Company
- Grup de Química Bioinorgànica i Supramolecular (QBIS), Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi , E17071 Girona, Catalonia, Spain
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30
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Fu LZ, Fang T, Zhou LL, Zhan SZ. A mononuclear copper electrocatalyst for both water reduction and oxidation. RSC Adv 2014. [DOI: 10.1039/c4ra07211a] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The oxidation and reduction of water is a key challenge in the production of chemical fuels from electricity.
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Affiliation(s)
- Ling-Zhi Fu
- College of Chemistry and Chemical Engineering
- South China University of Technology
- GuangZhou, China
| | - Ting Fang
- College of Chemistry and Chemical Engineering
- South China University of Technology
- GuangZhou, China
| | - Ling-Ling Zhou
- College of Chemistry and Chemical Engineering
- South China University of Technology
- GuangZhou, China
| | - Shu-Zhong Zhan
- College of Chemistry and Chemical Engineering
- South China University of Technology
- GuangZhou, China
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31
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Lentini S, Galloni P, Garcia-Bosch I, Costas M, Conte V. Ionic liquids as reaction media in catalytic oxidations with manganese and iron pyridyl triazacyclononane complexes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.10.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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López-Moreno A, Clemente-Tejeda D, Calbo J, Naeimi A, Bermejo FA, Ortí E, Pérez EM. Biomimetic oxidation of pyrene and related aromatic hydrocarbons. Unexpected electron accepting abilities of pyrenequinones. Chem Commun (Camb) 2014; 50:9372-5. [DOI: 10.1039/c4cc04026k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We present a mild catalytic method to oxidize PAHs and, in particular, pyrene, and we characterize the electron accepting abilities of pyrenequinones both in gas phase and in solution.
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Affiliation(s)
| | - David Clemente-Tejeda
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas. Pza. de los Caídos 1-5
- Salamanca, Spain
| | - Joaquín Calbo
- Instituto de Ciencia Molecular
- Universidad de Valencia
- E-46980 Paterna, Spain
| | - Atena Naeimi
- IMDEA Nanoscience
- C/Faraday 9
- Ciudad Universitaria de Cantoblanco
- Madrid, Spain
- University of Jiroft
| | - Francisco A. Bermejo
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas. Pza. de los Caídos 1-5
- Salamanca, Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular
- Universidad de Valencia
- E-46980 Paterna, Spain
| | - Emilio M. Pérez
- IMDEA Nanoscience
- C/Faraday 9
- Ciudad Universitaria de Cantoblanco
- Madrid, Spain
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33
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Yazerski VA, Spannring P, Gatineau D, Woerde CHM, Wieclawska SM, Lutz M, Kleijn H, Klein Gebbink RJM. Making Fe(BPBP)-catalyzed C–H and CC oxidations more affordable. Org Biomol Chem 2014; 12:2062-70. [DOI: 10.1039/c3ob42249f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Canals M, Gonzalez-Olmos R, Costas M, Company A. Robust iron coordination complexes with N-based neutral ligands as efficient Fenton-like catalysts at neutral pH. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:9918-9927. [PMID: 23895017 DOI: 10.1021/es401602t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The homogeneous Fenton-like oxidation of organic substrates in water with hydrogen peroxide, catalyzed by six different metal coordination complexes with N-based neutral ligands, was studied at ambient conditions and initial pH 7, employing hydrogen peroxide as the terminal oxidant. At low catalyst concentration, the catalytic oxidative depletion of toluene achieved by selected catalysts was much more efficient than that obtained by the Fenton reagent at pH 3. The influence of pH, the water matrix and the catalyst/hydrogen peroxide concentration were investigated for the oxidation of toluene employing [FeCl2(bpmcn)] (1, bpmcn = N,N'-bis(2-pyridylmethyl)-N,N'-dimethyl-trans-1,2-diaminocyclohexane), the most efficient catalyst of the series. Moreover, the evolution of catalysts [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3, Pytacn = 1-(2-pyridylmethyl)-4,7-dimethyl-1,4,7-triazacyclononane, OTf = trifluoromethanesulfonate anion) during the course of the reaction was also studied by electrospray ionization mass spectrometry (ESI-MS). The oxidation products derived from toluene oxidation were also analyzed. A plausible mechanism of toluene degradation using [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3) as catalysts was proposed, which involves the coexistence of a metal-based path, analogous to that operating in organic media where substrate oxidation is executed by an iron(V)-oxo-hydroxo species, in parallel to a Fenton-type process where hydroxyl radicals are formed.
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Affiliation(s)
- Maite Canals
- LEQUIA, Institute of the Environment, Universitat de Girona , Campus Montilivi, E17071 Girona (Catalonia - Spain)
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35
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Prat I, Company A, Corona T, Parella T, Ribas X, Costas M. Assessing the Impact of Electronic and Steric Tuning of the Ligand in the Spin State and Catalytic Oxidation Ability of the FeII(Pytacn) Family of Complexes. Inorg Chem 2013; 52:9229-44. [DOI: 10.1021/ic4004033] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Irene Prat
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Anna Company
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Teresa Corona
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Teodor Parella
- Servei
de Ressonància
Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, E08193 Barcelona, Catalonia,
Spain
| | - Xavi Ribas
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Miquel Costas
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
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36
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Codolà Z, Garcia-Bosch I, Acuña-Parés F, Prat I, Luis JM, Costas M, Lloret-Fillol J. Electronic Effects on Single-Site Iron Catalysts for Water Oxidation. Chemistry 2013; 19:8042-7. [DOI: 10.1002/chem.201301112] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Indexed: 11/12/2022]
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37
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Gee YS, Abd El Kader KF, Hyland CJT. Synthetic methods: part (ii) oxidation and reduction methods. ANNUAL REPORTS SECTION "B" (ORGANIC CHEMISTRY) 2013; 109:103. [DOI: 10.1039/c3oc90011h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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38
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39
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Prat I, Gómez L, Canta M, Ribas X, Costas M. An iron catalyst for oxidation of alkyl C-H bonds showing enhanced selectivity for methylenic sites. Chemistry 2012; 19:1908-13. [PMID: 23255355 DOI: 10.1002/chem.201203281] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 10/30/2012] [Indexed: 11/06/2022]
Abstract
Many are called but few are chosen: A nonheme iron complex catalyzes the oxidation of alkyl C-H bonds by using H(2)O(2) as the oxidant, showing an enhanced selectivity for secondary over tertiary C-H bonds (see scheme).
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Affiliation(s)
- Irene Prat
- Departament de Química, Universitat de Girona, Campus de Montilivi, 17071, Girona, Spain
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