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Massie AA, Denler MC, Singh R, Sinha A, Nordlander E, Jackson TA. Structural Characterization of a Series of N5-Ligated Mn IV -Oxo Species. Chemistry 2020; 26:900-912. [PMID: 31693757 PMCID: PMC7388070 DOI: 10.1002/chem.201904434] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/23/2019] [Indexed: 11/05/2022]
Abstract
Analysis of extended X-ray absorption fine structure (EXAFS) data for the MnIV -oxo complexes [MnIV (O)(DMM N4py)]2+ , [MnIV (O)(2pyN2B)]2+ , and [MnIV (O)(2pyN2Q)]2+ (DMM N4py=N,N-bis(4-methoxy-3,5-dimethyl-2-pyridylmethyl)-N-bis(2-pyridyl)methylamine; 2pyN2B=(N-bis(1-methyl-2-benzimidazolyl)methyl-N-(bis-2-pyridylmethyl)amine, and 2pyN2Q=N,N-bis(2-pyridyl)-N,N-bis(2-quinolylmethyl)methanamine) afforded Mn=O and Mn-N bond lengths. The Mn=O distances for [MnIV (O)(DMM N4py)]2+ and [MnIV (O)(2pyN2B)]2+ are 1.72 and 1.70 Å, respectively. In contrast, the Mn=O distance for [MnIV (O)(2pyN2Q)]2+ was significantly longer (1.76 Å). We attribute this long distance to sample heterogeneity, which is reasonable given the reduced stability of [MnIV (O)(2pyN2Q)]2+ . The Mn=O distances for [MnIV (O)(DMM N4py)]2+ and [MnIV (O)(2pyN2B)]2+ could only be well-reproduced using DFT-derived models that included strong hydrogen-bonds between second-sphere solvent 2,2,2-trifluoroethanol molecules and the oxo ligand. These results suggest an important role for the 2,2,2-trifluoroethanol solvent in stabilizing MnIV -oxo adducts. The DFT methods were extended to investigate the structure of the putative [MnIV (O)(N4py)]2+ ⋅(HOTf)2 adduct. These computations suggest that a MnIV -hydroxo species is most consistent with the available experimental data.
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Affiliation(s)
- Allyssa A. Massie
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA
| | - Melissa C. Denler
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA
| | - Reena Singh
- Lund University, Chemical Physics, Department of Chemistry, Box 124, SE-221 00 Lund, Sweden
| | - Arup Sinha
- Lund University, Chemical Physics, Department of Chemistry, Box 124, SE-221 00 Lund, Sweden
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore - 632014 Tamil Nadu, India
| | - Ebbe Nordlander
- Lund University, Chemical Physics, Department of Chemistry, Box 124, SE-221 00 Lund, Sweden
| | - Timothy A. Jackson
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA
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Nasrollahi R, Zakavi S. Evidence on the Nature of the Active Oxidants Involved in the Oxidation of Alcohols with Oxone Catalyzed by an Electron‐Deficient Manganese Porphyrin: A Combined Kinetic and Mechanistic Study. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rahele Nasrollahi
- Institute for Advanced Studies in Basic Sciences (IASBS) 45137‐66731 Zanjan Iran
| | - Saeed Zakavi
- Institute for Advanced Studies in Basic Sciences (IASBS) 45137‐66731 Zanjan Iran
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de Ruiter G, Carsch KM, Gul S, Chatterjee R, Thompson NB, Takase MK, Yano J, Agapie T. Accelerated Oxygen Atom Transfer and C-H Bond Oxygenation by Remote Redox Changes in Fe 3 Mn-Iodosobenzene Adducts. Angew Chem Int Ed Engl 2017; 56:4772-4776. [PMID: 28338266 DOI: 10.1002/anie.201701319] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Indexed: 01/25/2023]
Abstract
We report the synthesis, characterization, and reactivity of [LFe3 (PhPz)3 OMn(s PhIO)][OTf]x (3: x=2; 4: x=3), where 4 is one of very few examples of iodosobenzene-metal adducts characterized by X-ray crystallography. Access to these rare heterometallic clusters enabled differentiation of the metal centers involved in oxygen atom transfer (Mn) or redox modulation (Fe). Specifically, 57 Fe Mössbauer and X-ray absorption spectroscopy provided unique insights into how changes in oxidation state (FeIII2 FeII MnII vs. FeIII3 MnII ) influence oxygen atom transfer in tetranuclear Fe3 Mn clusters. In particular, a one-electron redox change at a distal metal site leads to a change in oxygen atom transfer reactivity by ca. two orders of magnitude.
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Affiliation(s)
- Graham de Ruiter
- Department of Chemistry and Chemical Engineering, California Institute of Technology; MC 127-72, Pasadena, CA, 91125, USA
| | - Kurtis M Carsch
- Department of Chemistry and Chemical Engineering, California Institute of Technology; MC 127-72, Pasadena, CA, 91125, USA
| | - Sheraz Gul
- Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Ruchira Chatterjee
- Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Niklas B Thompson
- Department of Chemistry and Chemical Engineering, California Institute of Technology; MC 127-72, Pasadena, CA, 91125, USA
| | - Michael K Takase
- Department of Chemistry and Chemical Engineering, California Institute of Technology; MC 127-72, Pasadena, CA, 91125, USA
| | - Junko Yano
- Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Theodor Agapie
- Department of Chemistry and Chemical Engineering, California Institute of Technology; MC 127-72, Pasadena, CA, 91125, USA
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de Ruiter G, Carsch KM, Gul S, Chatterjee R, Thompson NB, Takase MK, Yano J, Agapie T. Accelerated Oxygen Atom Transfer and C−H Bond Oxygenation by Remote Redox Changes in Fe
3
Mn‐Iodosobenzene Adducts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Graham de Ruiter
- Department of Chemistry and Chemical Engineering California Institute of Technology; MC 127-72 Pasadena CA 91125 USA
| | - Kurtis M. Carsch
- Department of Chemistry and Chemical Engineering California Institute of Technology; MC 127-72 Pasadena CA 91125 USA
| | - Sheraz Gul
- Molecular Biophysics & Integrated Bioimaging Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Ruchira Chatterjee
- Molecular Biophysics & Integrated Bioimaging Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Niklas B. Thompson
- Department of Chemistry and Chemical Engineering California Institute of Technology; MC 127-72 Pasadena CA 91125 USA
| | - Michael K. Takase
- Department of Chemistry and Chemical Engineering California Institute of Technology; MC 127-72 Pasadena CA 91125 USA
| | - Junko Yano
- Molecular Biophysics & Integrated Bioimaging Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Theodor Agapie
- Department of Chemistry and Chemical Engineering California Institute of Technology; MC 127-72 Pasadena CA 91125 USA
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Bok KH, Lee MM, You GR, Ahn HM, Ryu KY, Kim SJ, Kim Y, Kim C. Synthesis, Characterization, and Catalytic Activities of A Nickel(II) Monoamido-Tetradentate Complex: Evidence For NiIII
-Oxo and NiIV
-Oxo Species. Chemistry 2017; 23:3117-3125. [DOI: 10.1002/chem.201605157] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Kwon Hee Bok
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
| | - Myoung Mi Lee
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
| | - Ga Rim You
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
| | - Hye Mi Ahn
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
| | - Ka Young Ryu
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
| | - Sung-Jin Kim
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 Korea
| | - Youngmee Kim
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 Korea
| | - Cheal Kim
- Department of Fine Chemistry; Seoul National University of Science and Technology; Seoul 139-743 Korea
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Fukuzumi S, Mizuno T, Ojiri T. Catalytic electron-transfer oxygenation of substrates with water as an oxygen source using manganese porphyrins. Chemistry 2012; 18:15794-804. [PMID: 23129350 DOI: 10.1002/chem.201202041] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Indexed: 11/10/2022]
Abstract
Manganese(V)-oxo-porphyrins are produced by the electron-transfer oxidation of manganese-porphyrins with tris(2,2'-bipyridine)ruthenium(III) ([Ru(bpy)(3)](3+); 2 equiv) in acetonitrile (CH(3)CN) containing water. The rate constants of the electron-transfer oxidation of manganese-porphyrins have been determined and evaluated in light of the Marcus theory of electron transfer. Addition of [Ru(bpy)(3)](3+) to a solution of olefins (styrene and cyclohexene) in CH(3)CN containing water in the presence of a catalytic amount of manganese-porphyrins afforded epoxides, diols, and aldehydes efficiently. Epoxides were converted to the corresponding diols by hydrolysis, and were further oxidized to the corresponding aldehydes. The turnover numbers vary significantly depending on the type of manganese-porphyrin used owing to the difference in their oxidation potentials and the steric bulkiness of the ligand. Ethylbenzene was also oxidized to 1-phenylethanol using manganese-porphyrins as electron-transfer catalysts. The oxygen source in the substrate oxygenation was confirmed to be water by using (18)O-labeled water. The rate constant of the reaction of the manganese(V)-oxo species with cyclohexene was determined directly under single-turnover conditions by monitoring the increase in absorbance attributable to the manganese(III) species produced in the reaction with cyclohexene. It has been shown that the rate-determining step in the catalytic electron-transfer oxygenation of cyclohexene is electron transfer from [Ru(bpy)(3)](3+) to the manganese-porphyrins.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency, Suita, Japan.
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Sawant SC, Wu X, Cho J, Cho KB, Kim SH, Seo MS, Lee YM, Kubo M, Ogura T, Shaik S, Nam W. Water as an Oxygen Source: Synthesis, Characterization, and Reactivity Studies of a Mononuclear Nonheme Manganese(IV) Oxo Complex. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000819] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sawant SC, Wu X, Cho J, Cho KB, Kim SH, Seo MS, Lee YM, Kubo M, Ogura T, Shaik S, Nam W. Water as an Oxygen Source: Synthesis, Characterization, and Reactivity Studies of a Mononuclear Nonheme Manganese(IV) Oxo Complex. Angew Chem Int Ed Engl 2010; 49:8190-4. [DOI: 10.1002/anie.201000819] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Nam W, Kim I, Lim MH, Choi HJ, Lee JS, Jang HG. Isolation of an oxomanganese(V) porphyrin intermediate in the reaction of a manganese(III) porphyrin complex and H2O2 in aqueous solution. Chemistry 2002; 8:2067-71. [PMID: 11981891 DOI: 10.1002/1521-3765(20020503)8:9<2067::aid-chem2067>3.0.co;2-v] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The reaction of [Mn(TF(4)TMAP)](CF(3)SO(3))(5) (TF(4)TMAP=meso-tetrakis(2,3,5,6-tetrafluoro-N,N,N-trimethyl-4-aniliniumyl)porphinato dianion) with H(2)O(2) (2 equiv) at pH 10.5 and 0 degrees C yielded an oxomanganese(V) porphyrin complex 1 in aqueous solution, whereas an oxomanganese(IV) porphyrin complex 2 was generated in the reactions of tert-alkyl hydroperoxides such as tert-butyl hydroperoxide and 2-methyl-1-phenyl-2-propyl hydroperoxide. Complex 1 was capable of epoxidizing olefins and exchanging its oxygen with H(2) (18)O, whereas 2 did not epoxidize olefins. From the reactions of [Mn(TF(4)TMAP)](5+) with various oxidants in the pH range 3-11, the O-O bond cleavage of hydroperoxides was found to be sensitive to the hydroperoxide substituent and the pH of the reaction solution. Whereas the O-O bond of hydroperoxides containing an electron-donating tert-alkyl group is cleaved homolytically, an electron-withdrawing substituent such as an acyl group in m-chloroperoxybenzoic acid (m-CPBA) facilitates O-O bond heterolysis. The mechanism of the O-O bond cleavage of H(2)O(2) depends on the pH of the reaction solution: O-O bond homolysis prevails at low pH and O-O bond heterolysis becomes a predominant pathway at high pH. The effect of pH on (18)O incorporation from H(2) (18)O into oxygenated products was examined over a wide pH range, by carrying out the epoxidation of carbamazepine (CBZ) with [Mn(TF(4)TMAP)](5+) and KHSO(5) in buffered H(2) (18)O solutions. A high proportion of (18)O was incorporated into the CBZ-10,11-oxide product at all pH values but this proportion was not affected significantly by the pH of the reaction solution.
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Affiliation(s)
- Wonwoo Nam
- Department of Chemistry and Division of Molecular Life Sciences, Ewha Womans University Seoul, Korea.
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Kaustov L, Tal ME, Shames AI, Gross Z. Spin Transition in a Manganese(III) Porphyrin Cation Radical, Its Transformation to a Dichloromanganese(IV) Porphyrin, and Chlorination of Hydrocarbons by the Latter. Inorg Chem 1997; 36:3503-3511. [PMID: 11670030 DOI: 10.1021/ic961207p] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical oxidation of (TMP)Mn(III)(Cl) (TMP = the tetramesitylporphyrinato dianion) by Fe(ClO(4))(3) leads to the porphyrin-oxidized product (TMP(*)(+))Mn(III)(ClO(4))(2). Magnetic measurements and EPR spectroscopy show that the total spin of the complex changes from S = (5)/(2) at high temperature to S = (3)/(2) at low temperature. Ligand exchange of the perchlorato ligands in (TMP(*)(+))Mn(III)(ClO(4))(2) by chloride anions is accompanied by a change of the oxidation site from porphyrin to metal, resulting in (TMP)Mn(IV)(Cl)(2). This high-valent-metal complex can effect chlorine atom transfer to olefins, as well as to dimedone and chlorodimedone, natural substrates of chloroperoxidases.
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Affiliation(s)
- Lilia Kaustov
- Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Physics, Laboratory of Magnetic Resonance, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
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