1
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Monika, Ansari A. Effect of the ring size of TMC ligands in controlling C-H bond activation by metal-superoxo species. Dalton Trans 2022; 51:5878-5889. [PMID: 35347335 DOI: 10.1039/d2dt00491g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Metal-superoxo species play a very important role in many metal-mediated catalytic transformation reactions. Their catalytic reactivity is affected by many factors such as the nature of metal ions and ring size of ligands. Herein, for the first time, we report DFT calculations on the electronic structures of a series of metal-superoxo species (M = V, Cr, Mn, Fe, and Co) with two ring size ligands, i.e., 13-TMC/14-TMC, and a detailed mechanistic study on the C-H bond activation of cyclohexa-1,4-diene followed by the effect of the ring size of ligands. Our DFT results showed that the electron density at the distal oxygen plays an important role in C-H bond activation. By computing the energetics of C-H bond activation and mapping the potential energy surface, it was found that the initial hydrogen abstraction is the rate-determining step with both TMC rings and all the studied metal-superoxo species. The significant electron density at the cyclohex-1,4-diene carbon indicates that the reaction proceeds via the proton-coupled electron transfer mechanism. By mapping the potential energy surfaces, we found that the 13-TMC ligated superoxo with the anti-isomer are more reactive than the 14-TMC superoxo species except for the iron-superoxo species where the 14-TMC ligated superoxo species is more reactive i.e. smaller ring size TMC is more reactive towards C-H bond activation. This is also supported by the structural correlation, i.e., the greater contraction in the smaller ring results in the metal being pushed out of plane along the z-axis, which reduces the steric hindrance. Thus, the ring size can help in designing catalysts with better efficiency for catalytic reactions.
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Affiliation(s)
- Monika
- Department of Chemistry, Central University of Haryana, India, 123031.
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana, India, 123031.
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2
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Singh S, Nautiyal D, Thetiot F, Le Poul N, Goswami T, Kumar A, Kumar S. Bioinspired Heterobimetallic Photocatalyst ( RuIIchrom-FeIIIcat) for Visible-Light-Driven C-H Oxidation of Organic Substrates via Dioxygen Activation. Inorg Chem 2021; 60:16059-16064. [PMID: 34662098 DOI: 10.1021/acs.inorgchem.1c02514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a bioinspired heterobimetallic photocatalyst RuIIchrom-FeIIIcat and its relevant applications toward visible-light-driven C-H bond oxidation of a series of hydrocarbons using O2 as the O-atom source. The RuII center absorbs visible light near 460 nm and triggers a cascade of electrons to FeIII to afford a catalytically active high-valent FeIV═O species. The in situ formed FeIV═O has been employed for several high-impact oxidation reactions in the presence of triethanolamine (TEOA) as the sacrificial electron donor.
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Affiliation(s)
- Siddhant Singh
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun 248001, Uttarakhand, India
| | - Divyanshu Nautiyal
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun 248001, Uttarakhand, India
| | - Franck Thetiot
- CEMCA, CNRS, UMR 6521, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, Brest 29238, France
| | - Nicolas Le Poul
- CEMCA, CNRS, UMR 6521, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, Brest 29238, France
| | - Tapas Goswami
- Department of Chemistry, University of Petroleum and Energy Studies, Bidholi, Dehradun 248007, Uttarakhand, India
| | - Arun Kumar
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun 248001, Uttarakhand, India
| | - Sushil Kumar
- Department of Chemistry, University of Petroleum and Energy Studies, Bidholi, Dehradun 248007, Uttarakhand, India
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3
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Khatua M, Goswami B, Samanta S. Dehydrogenation of amines in aryl-amine functionalized pincer-like nitrogen-donor redox non-innocent ligands via ligand reduction on a Ni(ii) template. Dalton Trans 2020; 49:6816-6831. [PMID: 32374795 DOI: 10.1039/d0dt00466a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We have synthesized a series of new redox non-innocent azo aromatic pincer-like ligands: 2-(phenylazo)-6-(arylaminomethyl)pyridine (HLa-c: HLa = 2-(phenylazo)-6-(2,6-diisopropylphenylaminomethyl)pyridine, HLb = 2-(phenylazo)-6-(2,6-dimethylphenylaminomethyl)pyridine, and HLc = 2-(phenylazo)-6-(phenylaminomethyl)pyridine), in which one side arm is an arylaminomethyl moiety and the other arm is a 2-phenylazo moiety. Nickel(ii) complexes, 1-3, of these ligands HLa-c were synthesized in good yield (approximately 70%) by the reaction of ligands : (NiCl2·6H2O) in a 1 : 1 molar ratio in methanol. The amine donor in each of the ligands HLa-c binds to the Ni(ii) centre without deprotonation. In the solid state, complex 3 is a dimer; in solution it exists as monomer 3a. The reduction of acetonitrile solutions of each of the complexes 1, 2 and 3a, separately, with cobaltocene (1 equivalent), followed by exposure of the solution to air, resulted in the formation of new complexes 7, 8 and 9, respectively. Novel free ligands Lx and Ly have also been isolated, in addition to complexes 7 and 8, from the reaction of complexes 1 and 2, respectively. Complexes 7-9 and free ligands Lx and Ly have been formed via a dehydrogenation reaction of the arylaminomethyl side arm. The mechanism of the reaction was thoroughly investigated using a series of studies, including cyclic voltammetry, EPR, and UV-Vis spectral studies and density functional theory (DFT) calculations. The results of these studies suggest a mechanism initiated by ligand reduction followed by dioxygen activation. A Cl-/I- scrambling experiment revealed that the dissociation of the chloride ligand(s) was associated with the one-electron reduction of the ligand (azo moiety) in each of the complexes 1, 2 and 3a. The dissociated chloride ligand(s) were reassociated with the metal following the dehydrogenation reaction to yield the final products. All of the newly synthesized compounds were fully characterized using a variety of physicochemical techniques. Single-crystal X-ray structures of the representative compounds were determined to confirm the identities of the synthesized molecules.
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Affiliation(s)
- Manas Khatua
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Bappaditya Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Subhas Samanta
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India.
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4
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Parise A, Muraca MC, Russo N, Toscano M, Marino T. The Generation of the Oxidant Agent of a Mononuclear Nonheme Fe(II) Biomimetic Complex by Oxidative Decarboxylation. A DFT Investigation. Molecules 2020; 25:molecules25020328. [PMID: 31947511 PMCID: PMC7024176 DOI: 10.3390/molecules25020328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 11/16/2022] Open
Abstract
The oxidative decarboxylation of the iron(II) α-hydroxy acid (mandelic acid) complex model, biomimetic of Rieske dioxygenase, has been investigated at the density functional level. The explored mechanism sheds light on the role of the α-hydroxyl group on the dioxygen activation. The potential energy surfaces have been explored in different electronic spin states. The rate-determining step of the process is the proton transfer. The oxidative decarboxylation preferentially takes place on the quintet state.
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Affiliation(s)
| | | | - Nino Russo
- Correspondence: (N.R.); (T.M.); Tel.: +39-0984-492106 (N.R.); +39-0984-492085 (T.M.)
| | | | - Tiziana Marino
- Correspondence: (N.R.); (T.M.); Tel.: +39-0984-492106 (N.R.); +39-0984-492085 (T.M.)
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5
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Ayad M, Klein Gebbink RJM, Le Mest Y, Schollhammer P, Le Poul N, Pétillon FY, Mandon D. Mononuclear iron(ii) complexes containing a tripodal and macrocyclic nitrogen ligand: synthesis, reactivity and application in cyclohexane oxidation catalysis. Dalton Trans 2018; 47:15596-15612. [PMID: 30346459 DOI: 10.1039/c8dt02952k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Two novel tripodal ligands L1 and L2 based on a tris(methylpyridyl)amine (TPA) motif have been prepared and reacted with two different iron(ii) salts. The ligand L1 contains a bis(amino-phenyl)-TPA group whereas the macrocyclic ligand L2 displays two different coordinating cores, namely TPA and pyridine-dicarboxamide. The resulting mononuclear complexes 1-4 have been characterized in the solid state and in solution by spectroscopic and electrochemical methods. All complexes are high spin and mainly pentacoordinated. X-ray diffraction analyses of the crystals of complexes 2 and 3 demonstrate that the coordination sphere of the iron(ii) centre adopts either a distorted bipyramidal-trigonal or square pyramidal geometry. In the absence of an exogenous substrate, oxidation of complex 2 by H2O2 induces an intramolecular aromatic hydroxylation, as shown by the X-ray structure of the resulting dinuclear complex 2'. Catalytic studies in the presence of a substrate (cyclohexane) show that the reaction process is strongly impacted by the macrocyclic topology of the ligand and the nature of the counter-ion.
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Affiliation(s)
- Massinisa Ayad
- UMR CNRS 6521, Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, Université de Bretagne Occidentale, 6 Avenue Victor Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France.
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6
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Coordination chemistry of mononuclear ruthenium complexes bearing versatile 1,8-naphthyridine units: Utilization of specific reaction sites constructed by the secondary coordination sphere. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.11.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Chatterjee S, Bhattacharya S, Paine TK. Bioinspired Olefin cis-Dihydroxylation and Aliphatic C–H Bond Hydroxylation with Dioxygen Catalyzed by a Nonheme Iron Complex. Inorg Chem 2018; 57:10160-10169. [DOI: 10.1021/acs.inorgchem.8b01353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Shrabanti Bhattacharya
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 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, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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8
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Suseelan AS, Varghese B, Edamana P, Murthy NN. Reagent‐Regulated Oxidative
O
‐Demethylation of a Ferrous Complex Stabilized by a Tetradentate N Ligand with a Methoxyphenyl Substituent. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201700946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Babu Varghese
- Sophisticated Analytical Instruments Facility (SAIF) IIT Madras 600036 Chennai India
| | - Prasad Edamana
- Sophisticated Analytical Instruments Facility (SAIF) IIT Madras 600036 Chennai India
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9
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Bohn A, Sénéchal‐David K, Vanoutryve J, Guillot R, Rivière E, Banse F. Synthesis and Characterization of Iron(II) Complexes with a BPMEN‐Type Ligand Bearing π‐Accepting Nitro Groups. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Antoine Bohn
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Katell Sénéchal‐David
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Jonathan Vanoutryve
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
| | - Frédéric Banse
- Institut de Chimie Moléculaire et des Matériaux d'Orsay Université Paris Sud, Université Paris Saclay, CNRS 91405 Orsay CEDEX France
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10
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Clares MP, Acosta-Rueda L, Castillo CE, Blasco S, Jiménez HR, García-España E, Basallote MG. Iron(II) Complexes with Scorpiand-Like Macrocyclic Polyamines: Kinetico-Mechanistic Aspects of Complex Formation and Oxidative Dehydrogenation of Coordinated Amines. Inorg Chem 2017; 56:4400-4412. [DOI: 10.1021/acs.inorgchem.6b03070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Paz Clares
- Departamento
de Química Inorgánica, Universidad de Valencia, Instituto de Ciencia Molecular, Edificio de Institutos de Paterna, C/Catedrático
José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Laura Acosta-Rueda
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad de Cádiz, Avda República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Carmen E. Castillo
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad de Cádiz, Avda República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Salvador Blasco
- Departamento
de Química Inorgánica, Universidad de Valencia, Instituto de Ciencia Molecular, Edificio de Institutos de Paterna, C/Catedrático
José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Hermas R. Jiménez
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Valencia, C/Dr. Moliner 50, 46100 Burjasot, Valencia, Spain
| | - Enrique García-España
- Departamento
de Química Inorgánica, Universidad de Valencia, Instituto de Ciencia Molecular, Edificio de Institutos de Paterna, C/Catedrático
José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Manuel G. Basallote
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad de Cádiz, Avda República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
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11
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Schweinfurth D, Hettmanczyk L, Suntrup L, Sarkar B. Metal Complexes of Click-Derived Triazoles and Mesoionic Carbenes: Electron Transfer, Photochemistry, Magnetic Bistability, and Catalysis. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700030] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- David Schweinfurth
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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12
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Oyama D, Yamanaka T, Abe R, Takase T. Ruthenium complexes bearing a tridentate polypyridyl ligand with non-coordinating donor atoms: Construction of a specific coordination environment involving noncovalent interactions. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Chakraborty B, Jana RD, Singh R, Paria S, Paine TK. Reductive Activation of O2 by Non-Heme Iron(II) Benzilate Complexes of N4 Ligands: Effect of Ligand Topology on the Reactivity of O2-Derived Oxidant. Inorg Chem 2016; 56:359-371. [DOI: 10.1021/acs.inorgchem.6b02282] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Biswarup Chakraborty
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Rahul Dev Jana
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Reena Singh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sayantan Paria
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - 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
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14
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Neaţu F, Culică G, Florea M, Parvulescu VI, Cavani F. Synthesis of Terephthalic Acid by p-Cymene Oxidation using Oxygen: Toward a More Sustainable Production of Bio-Polyethylene Terephthalate. CHEMSUSCHEM 2016; 9:3102-3112. [PMID: 27731947 DOI: 10.1002/cssc.201600718] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Indexed: 05/13/2023]
Abstract
The synthesis of terephthalic acid from biomass remains an unsolved challenge. In this study, we conducted the selective oxidation of p-cymene (synthesized from biodegradable terpenes, limonene, or eucalyptol) into terephthalic acid over a Mn-Fe mixed-oxide heterogeneous catalyst. The impact of various process parameters (oxidant, temperature, reaction time, catalyst amount, oxygen pressure) on the selectivity to terephthalic acid was evaluated, and some mechanistic aspects were elucidated. An unprecedented synthesis of biobased terephthalic acid (51 % yield) in the presence of O2 is reported.
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Affiliation(s)
- Florentina Neaţu
- Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania
| | - Geanina Culică
- Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania
| | - Mihaela Florea
- Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania
| | - Vasile I Parvulescu
- Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania
| | - Fabrizio Cavani
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136, Bologna, Italy
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15
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Pramanik S, Roy S, Ghorui T, Ganguly S, Pramanik K. Iridium(III) Mediated Reductive Transformation of Closed-Shell Azo-Oxime to Open-Shell Azo-Imine Radical Anion: Molecular and Electronic Structure, Electron Transfer, and Optoelectronic Properties. Inorg Chem 2016; 55:1461-8. [DOI: 10.1021/acs.inorgchem.5b02185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuvam Pramanik
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sima Roy
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Tapas Ghorui
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sanjib Ganguly
- Department
of Chemistry, St. Xavier’s College, Kolkata 700016, India
| | - Kausikisankar Pramanik
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
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16
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Anneser MR, Haslinger S, Pöthig A, Cokoja M, D'Elia V, Högerl MP, Basset JM, Kühn FE. Binding of molecular oxygen by an artificial heme analogue: investigation on the formation of an Fe–tetracarbene superoxo complex. Dalton Trans 2016; 45:6449-55. [DOI: 10.1039/c6dt00538a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of a heme-like organometallic Fe–NHC complex with O2 is studied. The formation of a superoxo Fe(iii) intermediate is observed. The reactivity of the intermediate in acetone and acetonitrile is described and the products are identified.
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Affiliation(s)
- Markus R. Anneser
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Ernst-Otto-Fischer-Strasse 1 and Faculty of Chemistry
- D-85747 Garching bei München
- Germany
| | - Stefan Haslinger
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Ernst-Otto-Fischer-Strasse 1 and Faculty of Chemistry
- D-85747 Garching bei München
- Germany
| | - Alexander Pöthig
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Ernst-Otto-Fischer-Strasse 1 and Faculty of Chemistry
- D-85747 Garching bei München
- Germany
| | - Mirza Cokoja
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Ernst-Otto-Fischer-Strasse 1 and Faculty of Chemistry
- D-85747 Garching bei München
- Germany
| | - Valerio D'Elia
- KAUST Catalysis Center
- King Abdullah University of Science and Technology
- Thuwal
- Kingdom of Saudi Arabia
- Department of Materials Science and Engineering
| | - Manuel P. Högerl
- KAUST Catalysis Center
- King Abdullah University of Science and Technology
- Thuwal
- Kingdom of Saudi Arabia
| | - Jean-Marie Basset
- KAUST Catalysis Center
- King Abdullah University of Science and Technology
- Thuwal
- Kingdom of Saudi Arabia
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Ernst-Otto-Fischer-Strasse 1 and Faculty of Chemistry
- D-85747 Garching bei München
- Germany
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17
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Yamagishi H, Nabeya S, Ikariya T, Kuwata S. Protic Ruthenium Tris(pyrazol-3-ylmethyl)amine Complexes Featuring a Hydrogen-Bonding Network in the Second Coordination Sphere. Inorg Chem 2015; 54:11584-6. [DOI: 10.1021/acs.inorgchem.5b02044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hiroaki Yamagishi
- Department of Applied
Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku,
Tokyo 152-8552, Japan
| | - Shohei Nabeya
- Department of Applied
Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku,
Tokyo 152-8552, Japan
| | - Takao Ikariya
- Department of Applied
Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku,
Tokyo 152-8552, Japan
| | - Shigeki Kuwata
- Department of Applied
Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku,
Tokyo 152-8552, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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18
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Chatterjee S, Paine TK. Olefincis-Dihydroxylation and Aliphatic CH Bond Oxygenation by a Dioxygen-Derived Electrophilic Iron-Oxygen Oxidant. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502229] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Chatterjee S, Paine TK. Olefin cis-Dihydroxylation and Aliphatic C-H Bond Oxygenation by a Dioxygen-Derived Electrophilic Iron-Oxygen Oxidant. Angew Chem Int Ed Engl 2015; 54:9338-42. [PMID: 26088714 DOI: 10.1002/anie.201502229] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/16/2015] [Indexed: 12/22/2022]
Abstract
Many iron-containing enzymes involve metal-oxygen oxidants to carry out O2-dependent transformation reactions. However, the selective oxidation of C-H and C=C bonds by biomimetic complexes using O2 remains a major challenge in bioinspired catalysis. The reactivity of iron-oxygen oxidants generated from an Fe(II)-benzilate complex of a facial N3 ligand were thus investigated. The complex reacted with O2 to form a nucleophilic oxidant, whereas an electrophilic oxidant, intercepted by external substrates, was generated in the presence of a Lewis acid. Based on the mechanistic studies, a nucleophilic Fe(II)-hydroperoxo species is proposed to form from the benzilate complex, which undergoes heterolytic O-O bond cleavage in the presence of a Lewis acid to generate an Fe(IV)-oxo-hydroxo oxidant. The electrophilic iron-oxygen oxidant selectively oxidizes sulfides to sulfoxides, alkenes to cis-diols, and it hydroxylates the C-H bonds of alkanes, including that of cyclohexane.
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Affiliation(s)
- Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata-700032 (India)
| | - 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).
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20
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Ségaud N, Anxolabéhère-Mallart E, Sénéchal-David K, Acosta-Rueda L, Robert M, Banse F. Electrochemical study of a nonheme Fe(ii) complex in the presence of dioxygen. Insights into the reductive activation of O 2 at Fe(ii) centers. Chem Sci 2015; 6:639-647. [PMID: 28936313 PMCID: PMC5588783 DOI: 10.1039/c4sc01891e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 09/16/2014] [Indexed: 01/15/2023] Open
Abstract
Recent efforts to model the reactivity of iron oxygenases have led to the generation of nonheme FeIII(OOH) and FeIV(O) intermediates from FeII complexes and O2 but using different cofactors. This diversity emphasizes the rich chemistry of nonheme Fe(ii) complexes with dioxygen. We report an original mechanistic study of the reaction of [(TPEN)FeII]2+ with O2 carried out by cyclic voltammetry. From this FeII precursor, reaction intermediates such as [(TPEN)FeIV(O)]2+, [(TPEN)FeIII(OOH)]2+ and [(TPEN)FeIII(OO)]+ have been chemically generated in high yield, and characterized electrochemically. These electrochemical data have been used to analyse and perform simulation of the cyclic voltammograms of [(TPEN)FeII]2+ in the presence of O2. Thus, several important mechanistic informations on this reaction have been obtained. An unfavourable chemical equilibrium between O2 and the FeII complex occurs that leads to the FeIII-peroxo complex upon reduction, similarly to heme enzymes such as P450. However, unlike in heme systems, further reduction of this latter intermediate does not result in O-O bond cleavage.
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Affiliation(s)
- Nathalie Ségaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay , UMR CNRS 8182 , Université Paris Sud , F-91405 Orsay Cedex , France .
| | - Elodie Anxolabéhère-Mallart
- Laboratoire d'Electrochimie Moléculaire , Université Paris Diderot , Sorbonne Paris Cité , F-75205 PARIS CEDEX 13 , France .
| | - Katell Sénéchal-David
- Institut de Chimie Moléculaire et des Matériaux d'Orsay , UMR CNRS 8182 , Université Paris Sud , F-91405 Orsay Cedex , France .
| | - Laura Acosta-Rueda
- Institut de Chimie Moléculaire et des Matériaux d'Orsay , UMR CNRS 8182 , Université Paris Sud , F-91405 Orsay Cedex , France .
| | - Marc Robert
- Laboratoire d'Electrochimie Moléculaire , Université Paris Diderot , Sorbonne Paris Cité , F-75205 PARIS CEDEX 13 , France .
| | - Frédéric Banse
- Institut de Chimie Moléculaire et des Matériaux d'Orsay , UMR CNRS 8182 , Université Paris Sud , F-91405 Orsay Cedex , France .
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21
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22
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Döhlert P, Irran E, Kretschmer R, Enthaler S. Synthesis, characterization and application of iron N-substituted imidazole complexes with the motif ClFeL4OFeCl3. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2014.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Ansari A, Jayapal P, Rajaraman G. CH Bond Activation by Metal-Superoxo Species: Magnetic Coupling Correlated to High Reactivity in Metal-Superoxo species. Angew Chem Int Ed Engl 2014; 54:564-8. [DOI: 10.1002/anie.201409844] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Indexed: 11/12/2022]
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24
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Ansari A, Jayapal P, Rajaraman G. CH Bond Activation by Metal-Superoxo Species: What Drives High Reactivity? Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409844] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Thallaj NK, Orain PY, Thibon A, Sandroni M, Welter R, Mandon D. Steric Congestion at, and Proximity to, a Ferrous Center Leads to Hydration of α-Nitrile Substituents Forming Coordinated Carboxamides. Inorg Chem 2014; 53:7824-36. [DOI: 10.1021/ic500096h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nasser K. Thallaj
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie de Strasbourg−UMR 7177, CNRS−Université de Strasbourg, Bâtiment Le Bel, 4 rue Blaise Pascal, CS
90032, F-67081 Strasbourg
Cedex, France
- Faculty of
Applied Sciences, Department of Chemistry, Kalamoon University at Deratiah, P.O.
Box 222, Deratiah, Syria
| | - Pierre-Yves Orain
- Laboratoire de Chimie,
Electrochimie Moléculaires et Chimie Analytique, UMR 6521, CNRS−Université de Bretagne Occidentale, 6 Avenue
Victor Le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France
| | - Aurore Thibon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie de Strasbourg−UMR 7177, CNRS−Université de Strasbourg, Bâtiment Le Bel, 4 rue Blaise Pascal, CS
90032, F-67081 Strasbourg
Cedex, France
- Laboratoire CLAC, Institut de Chimie de Strasbourg−UMR 7177, CNRS−Université de Strasbourg, 1 rue
Blaise Pascal, F-67000 Strasbourg Cedex, France
| | - Martina Sandroni
- Laboratoire de Chimie,
Electrochimie Moléculaires et Chimie Analytique, UMR 6521, CNRS−Université de Bretagne Occidentale, 6 Avenue
Victor Le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France
| | - Richard Welter
- Institut
de Biologie Moléculaire des Plantes, UPR CNRS 2357, Université de Strasbourg, F-67084 Strasbourg, France
| | - Dominique Mandon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, Institut de Chimie de Strasbourg−UMR 7177, CNRS−Université de Strasbourg, Bâtiment Le Bel, 4 rue Blaise Pascal, CS
90032, F-67081 Strasbourg
Cedex, France
- Laboratoire de Chimie,
Electrochimie Moléculaires et Chimie Analytique, UMR 6521, CNRS−Université de Bretagne Occidentale, 6 Avenue
Victor Le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France
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26
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Comba P, Lee YM, Nam W, Waleska A. Catalytic oxidation of alkanes by iron bispidine complexes and dioxygen: oxygen activation versus autoxidation. Chem Commun (Camb) 2014; 50:412-4. [DOI: 10.1039/c3cc47013j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Huang Z, Zhang XA, Bosch M, Smith SJ, Lippard SJ. Tris(2-pyridylmethyl)amine (TPA) as a membrane-permeable chelator for interception of biological mobile zinc. Metallomics 2013; 5:648-55. [PMID: 23715510 DOI: 10.1039/c3mt00103b] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We report the characterization of tris(2-pyridylmethyl)amine (TPA) as a membrane-permeable zinc chelator for intercepting biological mobile zinc. Compared to N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN), TPA chelates zinc with faster kinetics in cuvettes, live cells, and brain slices. TPA also is generally less toxic than TPEN in cell culture. Mechanistic analysis indicates that these improvements arise from both the electronic and steric properties of TPA including weaker metal-binding affinity, lower pKa, and smaller size. These results demonstrate that TPA chelation is a valuable addition to the methodologies available for investigating mobile zinc in biology.
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Affiliation(s)
- Zhen Huang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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28
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Belli Dell’Amico D, Labella L, Marchetti F, Mastrorilli P, Samaritani S, Todisco S. Oxidation by dioxygen of manganese(II) and iron(II) complexes. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Thibon A, Karmazin‐Brelot L, Mandon D. Coordination Versatility and Amide Shift in Mononuclear Fe
II
Complexes with the Asymmetrical Tripod [(6‐Bromo‐2‐pyridyl)methyl][(6‐pivaloylamido‐2‐pyridyl)methyl](2‐pyridylmethyl)amine (BrMPPA). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aurore Thibon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, UMR CNRS 7177, Institut de Chimie de Strasbourg, Université de Strasbourg, Bâtiment Le Bel, 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg Cedex, France, Fax: +33‐3‐68851438, http://institut‐chimie.unistra.fr/
| | - Lydia Karmazin‐Brelot
- Service de Radiocristallographie, UMR CNRS no. 7177, Institut de Chimie de Strasbourg et Université de Strasbourg, 1, rue Blaise Pascal, BP 296/R8, 67008 Strasbourg Cedex, France
| | - Dominique Mandon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, UMR CNRS 7177, Institut de Chimie de Strasbourg, Université de Strasbourg, Bâtiment Le Bel, 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg Cedex, France, Fax: +33‐3‐68851438, http://institut‐chimie.unistra.fr/
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30
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Thibon A, Karmazin-Brelot L, Mandon D. Facile synthesis of the new tripodal tetraamine ligand tris(thiazolylmethyl) amine, and full characterization of two ferrous complexes. Dalton Trans 2013; 42:6705-7. [DOI: 10.1039/c3dt50484k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Aurore Thibon
- Laboratoire de Chimie Biomimétique des Métaux de Transition, UMR CNRS 7177, Institut de Chimie de Strasbourg, Université de Strasbourg, Bâtiment Le Bel, 4 Rue Blaise Pascal, CS 90032, F-67081 Strasbourg Cedex, France
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31
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Conte M, Liu X, Murphy DM, Whiston K, Hutchings GJ. Cyclohexane oxidation using Au/MgO: an investigation of the reaction mechanism. Phys Chem Chem Phys 2012; 14:16279-85. [PMID: 23132082 DOI: 10.1039/c2cp43363j] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The liquid phase oxidation of cyclohexane was undertaken using Au/MgO and the reaction mechanism was investigated by means of continuous wave (CW) EPR spectroscopy employing the spin trapping technique. Activity tests aimed to determine the conversion and selectivity of Au/MgO catalyst showed that Au was capable of selectivity control to cyclohexanol formation up to 70%, but this was accompanied by a limited enhancement in conversion when compared with the reaction in the absence of catalyst. In contrast, when radical initiators were used, in combination with Au/MgO, an activity comparable to that observed in industrial processes at ca. 5% conversion was found, with retained high selectivity. By studying the free radical autoxidation of cyclohexane and the cyclohexyl hydroperoxide decomposition in the presence of spin traps, we show that Au nanoparticles are capable of an enhanced generation of cyclohexyl alkoxy radicals, and the role of Au is identified as a promoter of the catalytic autoxidation processes, therefore demonstrating that the reaction proceeds via a radical chain mechanism.
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Affiliation(s)
- Marco Conte
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
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32
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Benhamou L, Thibon A, Brelot L, Lachkar M, Mandon D. Structural bases of oxygen-sensitivity in Fe(ii) complexes with tripodal ligands. Steric effects, Lewis acidity and the role of ancillary ligands. Dalton Trans 2012; 41:14369-80. [DOI: 10.1039/c2dt31558k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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