1
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Lionetti D, Suseno S, Shiau AA, de Ruiter G, Agapie T. Redox Processes Involving Oxygen: The Surprising Influence of Redox-Inactive Lewis Acids. JACS AU 2024; 4:344-368. [PMID: 38425928 PMCID: PMC10900226 DOI: 10.1021/jacsau.3c00675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 03/02/2024]
Abstract
Metalloenzymes with heteromultimetallic active sites perform chemical reactions that control several biogeochemical cycles. Transformations catalyzed by such enzymes include dioxygen generation and reduction, dinitrogen reduction, and carbon dioxide reduction-instrumental transformations for progress in the context of artificial photosynthesis and sustainable fertilizer production. While the roles of the respective metals are of interest in all these enzymatic transformations, they share a common factor in the transfer of one or multiple redox equivalents. In light of this feature, it is surprising to find that incorporation of redox-inactive metals into the active site of such an enzyme is critical to its function. To illustrate, the presence of a redox-inactive Ca2+ center is crucial in the Oxygen Evolving Complex, and yet particularly intriguing given that the transformation catalyzed by this cluster is a redox process involving four electrons. Therefore, the effects of redox inactive metals on redox processes-electron transfer, oxygen- and hydrogen-atom transfer, and O-O bond cleavage and formation reactions-mediated by transition metals have been studied extensively. Significant effects of redox inactive metals have been observed on these redox transformations; linear free energy correlations between Lewis acidity and the redox properties of synthetic model complexes are observed for several reactions. In this Perspective, these effects and their relevance to multielectron processes will be discussed.
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Affiliation(s)
| | - Sandy Suseno
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Angela A. Shiau
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Graham de Ruiter
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
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2
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Lueckheide MJ, Ertem MZ, Michon MA, Chmielniak P, Robinson JR. Peroxide-Selective Reduction of O 2 at Redox-Inactive Rare-Earth(III) Triflates Generates an Ambiphilic Peroxide. J Am Chem Soc 2022; 144:17295-17306. [PMID: 36083877 DOI: 10.1021/jacs.2c08140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal peroxides are key species involved in a range of critical biological and synthetic processes. Rare-earth (group III and the lanthanides; Sc, Y, La-Lu) peroxides have been implicated as reactive intermediates in catalysis; however, reactivity studies of isolated, structurally characterized rare-earth peroxides have been limited. Herein, we report the peroxide-selective (93-99% O22-) reduction of dioxygen (O2) at redox-inactive rare-earth triflates in methanol using a mild metallocene reductant, decamethylferrocene (Fc*). The first molecular praseodymium peroxide ([PrIII2(O22-)(18C6)2(EG)2][OTf]4; 18C6 = 18-crown-6, EG = ethylene glycol, -OTf = -O3SCF3; 2-Pr) was isolated and characterized by single-crystal X-ray diffraction, Raman spectroscopy, and NMR spectroscopy. 2-Pr displays high thermal stability (120 °C, 50 mTorr), is protonated by mild organic acids [pKa1(MeOH) = 5.09 ± 0.23], and engages in electrophilic (e.g., oxygen atom transfer) and nucleophilic (e.g., phosphate-ester cleavage) reactivity. Our mechanistic studies reveal that the rate of oxygen reduction is dictated by metal-ion accessibility, rather than Lewis acidity, and suggest new opportunities for differentiated reactivity of redox-inactive metal ions by leveraging weak metal-ligand binding events preceding electron transfer.
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Affiliation(s)
- Matthew J Lueckheide
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Mehmed Z Ertem
- Chemistry Division, Energy & Photon Sciences, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael A Michon
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Pawel Chmielniak
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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3
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Cha J, Lee E, Yandulov DV. Mechanistic Studies for Pd(II)(O 2) Reduction Generating Pd(0) and H 2O: Formation of Pd(OH) 2 as a Key Intermediate. Inorg Chem 2022; 61:14544-14552. [PMID: 36050901 DOI: 10.1021/acs.inorgchem.2c01139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular oxygen (O2) remains to be an ideal yet underutilized feedstock for the oxidative transformation of organic substrates and renewable energy systems such as fuel cells. Palladium (Pd) has shown particular promise in enabling these applications. The present study describes a Pd-mediated O2 reduction to water via C-H activation of 9,10-dihydroanthracene (DHA) by a Pd(II) η2-peroxo complex 1O2. The reaction yields stoichiometric anthracene and Pd(0) product 1 and is notable in two respects. First, plots of concentrations of the reaction participants over time have distinctly sigmoidal shapes, indicating that conversion accelerates over time and implying autocatalysis. Second, the reaction proceeds via a genuine monometallic Pd(II) dihydroxide 1(OH)2 directly observed to grow and decay as an intermediate. Confirming its role as an intermediate, the dihydroxide 1(OH)2 was found to mediate C-H oxidation of DHA on par in activity with the peroxo compound 1O2. Mechanistic studies with density functional theory (DFT) calculations suggested that both 1O2 and 1(OH)2 react with DHA by hydrogen atom transfer (HAT) and that autocatalysis in the 1O2 reaction results from oxidative addition of the initial Pd(II) complex 1O2 to the Pd(0) product 1. This reaction forms a transient bis(μ-oxo) Pd(II) dimer 1O21 that is more active in the HAT oxidation of DHA than the initial 1O2.
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Affiliation(s)
- Jeongmin Cha
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea.,Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Dmitry V Yandulov
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States.,Department of Biology and Biotechnology, National Research University Higher School of Economics, Moscow 117418, Russia
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4
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Vargo NP, Harland JB, Musselman BW, Lehnert N, Ertem MZ, Robinson JR. Calcium‐Ion Binding Mediates the Reversible Interconversion of
Cis
and
Trans
Peroxido Dicopper Cores. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Natasha P. Vargo
- Department of Chemistry Brown University 324 Brook Street Providence RI 02912 USA
| | - Jill B. Harland
- Department of Chemistry and Department of Biophysics University of Michigan 930 North University Avenue Ann Arbor MI 41809-1055 USA
| | - Bradley W. Musselman
- Department of Chemistry and Department of Biophysics University of Michigan 930 North University Avenue Ann Arbor MI 41809-1055 USA
| | - Nicolai Lehnert
- Department of Chemistry and Department of Biophysics University of Michigan 930 North University Avenue Ann Arbor MI 41809-1055 USA
| | - Mehmed Z. Ertem
- Chemistry Division, Energy & Photon Sciences Brookhaven National Laboratory PO Box 5000 Upton NY 11973-5000 USA
| | - Jerome R. Robinson
- Department of Chemistry Brown University 324 Brook Street Providence RI 02912 USA
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5
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Vargo NP, Harland JB, Musselman BW, Lehnert N, Ertem MZ, Robinson JR. Calcium-Ion Binding Mediates the Reversible Interconversion of Cis and Trans Peroxido Dicopper Cores. Angew Chem Int Ed Engl 2021; 60:19836-19842. [PMID: 34101958 DOI: 10.1002/anie.202105421] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/07/2021] [Indexed: 01/27/2023]
Abstract
Coupled dinuclear copper oxygen cores (Cu2 O2 ) featured in type III copper proteins (hemocyanin, tyrosinase, catechol oxidase) are vital for O2 transport and substrate oxidation in many organisms. μ-1,2-cis peroxido dicopper cores (C P) have been proposed as key structures in the early stages of O2 binding in these proteins; their reversible isomerization to other Cu2 O2 cores are directly relevant to enzyme function. Despite the relevance of such species to type III copper proteins and the broader interest in the properties and reactivity of bimetallic C P cores in biological and synthetic systems, the properties and reactivity of C P Cu2 O2 species remain largely unexplored. Herein, we report the reversible interconversion of μ-1,2-trans peroxido (T P) and C P dicopper cores. CaII mediates this process by reversible binding at the Cu2 O2 core, highlighting the unique capability for metal-ion binding events to stabilize novel reactive fragments and control O2 activation in biomimetic systems.
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Affiliation(s)
- Natasha P Vargo
- Department of Chemistry, Brown University, 324 Brook Street, Providence, RI, 02912, USA
| | - Jill B Harland
- Department of Chemistry and Department of Biophysics, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 41809-1055, USA
| | - Bradley W Musselman
- Department of Chemistry and Department of Biophysics, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 41809-1055, USA
| | - Nicolai Lehnert
- Department of Chemistry and Department of Biophysics, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 41809-1055, USA
| | - Mehmed Z Ertem
- Chemistry Division, Energy & Photon Sciences, Brookhaven National Laboratory, PO Box 5000, Upton, NY, 11973-5000, USA
| | - Jerome R Robinson
- Department of Chemistry, Brown University, 324 Brook Street, Providence, RI, 02912, USA
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6
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Abstract
AbstractNickel-catalyzed cross-coupling and photoredox catalytic reactions has found widespread utilities in organic synthesis. Redox processes are key intermediate steps in many catalytic cycles. As a result, it is pertinent to measure and document the redox potentials of various nickel species as precatalysts, catalysts, and intermediates. The redox potentials of a transition-metal complex are governed by its oxidation state, ligand, and the solvent environment. This article tabulates experimentally measured redox potentials of nickel complexes supported on common ligands under various conditions. This review article serves as a versatile tool to help synthetic organic and organometallic chemists evaluate the feasibility and kinetics of redox events occurring at the nickel center, when designing catalytic reactions and preparing nickel complexes.1 Introduction1.1 Scope1.2 Measurement of Formal Redox Potentials1.3 Redox Potentials in Nonaqueous Solution2 Redox Potentials of Nickel Complexes2.1 Redox Potentials of (Phosphine)Ni Complexes2.2 Redox Potentials of (Nitrogen)Ni Complexes2.3 Redox Potentials of (NHC)Ni Complexes
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7
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Das A, Chakraborty S, Mandal SK. Abnormal N-heterocyclic Carbene Based Ni(II) π-allyl Complex towards Molecular Oxygen Activation. Chem Asian J 2021; 16:2257-2260. [PMID: 34137185 DOI: 10.1002/asia.202100568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/15/2021] [Indexed: 11/08/2022]
Abstract
Abnormal N-heterocyclic carbene (aNHC) based Ni(II) π-allyl complexes (3 and 4) were synthesized starting from a Ni(0) precursor. These complexes were characterized by NMR spectroscopy, single-crystal X-ray crystallography (4) and elemental analysis data. The underlying mechanism for the formation of Ni(II) η3 -allyl complexes from a Ni(0) precursor on treatment with a free abnormal N-heterocyclic carbene in absence of any external additive or oxidant was unraveled. Later, complex 3 was exposed to O2 gas under ambient pressure resulting in molecular oxygen activation to form a μ-hydroxo bridged Ni(II) dimer.
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Affiliation(s)
- Arpan Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Soumi Chakraborty
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Swadhin K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
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8
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Liang Y, Shi SH, Jin R, Qiu X, Wei J, Tan H, Jiang X, Shi X, Song S, Jiao N. Electrochemically induced nickel catalysis for oxygenation reactions with water. Nat Catal 2021. [DOI: 10.1038/s41929-020-00559-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Zhao N, Filatov AS, Xie J, Hill EA, Rogachev AY, Anderson JS. Generation and Reactivity of a Ni III2(μ-1,2-peroxo) Complex. J Am Chem Soc 2020; 142:21634-21639. [PMID: 33320644 DOI: 10.1021/jacs.0c10958] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
High-valent transition metal-oxo, -peroxo, and -superoxo complexes are crucial intermediates in both biological and synthetic oxidation of organic substrates, water oxidation, and oxygen reduction. While high-valent oxygenated complexes of Mn, Fe, Co, and Cu are increasingly well-known, high-valent oxygenated Ni complexes are comparatively rarer. Herein we report the isolation of such an unusual high-valent species in a thermally unstable NiIII2(μ-1,2-peroxo) complex, which has been characterized using single-crystal X-ray diffraction and X-ray absorption, NMR, and UV-vis spectroscopies. Reactivity studies show that this complex is stable toward dissociation of oxygen but reacts with simple nucleophiles and electrophiles.
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Affiliation(s)
- Norman Zhao
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Alexander S Filatov
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Jiaze Xie
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Ethan A Hill
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Andrey Yu Rogachev
- Department of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - John S Anderson
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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10
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Yelin S, Limberg C. Molecular Structural Motifs and O2 Activation Inspired by Enzymes and Solid Catalysts. Catal Letters 2020. [DOI: 10.1007/s10562-019-02918-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Alkane and alkene oxidation reactions catalyzed by nickel(II) complexes: Effect of ligand factors. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213085] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Webb D, Fulton JR. Utilising an anilido-imino ligand to stabilise zinc-phosphanide complexes: reactivity and fluorescent properties. Dalton Trans 2019; 48:8094-8105. [PMID: 31011730 DOI: 10.1039/c9dt00681h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of zinc complexes bearing the anilido-imino ligand [(o-C6H4{N(C6H3iPr2)}{C(CH3) = NC6H3iPr2})] [(LDipp)ZnX] has been generated. This includes two amide derivatives, [(LDipp)Zn(N{SiMe3}2)] and [(LDipp)Zn(NH{Dipp})] and two phosphanide derivatives, [(LDipp)ZnPCy2] and [(LDipp)ZnPPh2]. The chemistry of the phosphanide complexes towards chalcogens was examined, with sulfur, selenium and tellurium oxidising the phosphorus centre of the dicylohexylphosphanide complex [(LDipp)ZnPCy2] to form [(LDipp)Zn(E)2PCy2] (E = S, Se, Te). Addition of tellurium to the diphenylphosphanide complex [(LDipp)ZnPPh2] results in formation of Ph2PPPh2 and [(LDipp)ZnTeZn(LDipp)]. The absorption and emission properties of these complexes was examined and the quantum yields are highly dependent upon the non-ancillary ligand X.
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Affiliation(s)
- Dylan Webb
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, 6012, New Zealand.
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13
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Ferretti E, Dechert S, Meyer F. Reductive Binding and Ligand-Based Redox Transformations of Nitrosobenzene at a Dinickel(II) Core. Inorg Chem 2019; 58:5154-5162. [DOI: 10.1021/acs.inorgchem.9b00256] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eleonora Ferretti
- Institut für Anorganische Chemie, Universität Göttingen, Tammanstrasse 4, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- Institut für Anorganische Chemie, Universität Göttingen, Tammanstrasse 4, D-37077 Göttingen, Germany
| | - Franc Meyer
- Institut für Anorganische Chemie, Universität Göttingen, Tammanstrasse 4, D-37077 Göttingen, Germany
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14
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Wind M, Hoof S, Herwig C, Braun‐Cula B, Limberg C. The Influence of Alkali Metal Ions on the Stability and Reactivity of Chromium(III) Superoxide Moieties Spanned by Siloxide Ligands. Chemistry 2019; 25:5743-5750. [DOI: 10.1002/chem.201900236] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Marie‐Louise Wind
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Santina Hoof
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Christian Herwig
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Beatrice Braun‐Cula
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Christian Limberg
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
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15
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Wang B, Kinjo R. Boron-based stepwise dioxygen activation with 1,4,2,5-diazadiborinine. Chem Sci 2019; 10:2088-2092. [PMID: 30881633 PMCID: PMC6385103 DOI: 10.1039/c8sc04624g] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/10/2018] [Indexed: 01/24/2023] Open
Abstract
Activation of dioxygen (O2) by 1,4,2,5-diazadiborinine 1 is reported. Two boron centers in 1 undergo a formal [4 + 2] cycloaddition with O2 at room temperature affording a bicyclo[2.2.2] molecule 2 featuring a B-O-O-B unit. Treatment of 2 with an additional equivalent of 1 leads to the cleavage of the O-O bond in 2 concomitant with the formation of two B-O bonds to yield 4 involving the extremely rare B4C2N2O2 ten-membered rings. A series of these reactions demonstrate the stepwise scission of the O[double bond, length as m-dash]O π-bond and the O-O σ-bond of O2.
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Affiliation(s)
- Baolin Wang
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 , Singapore .
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 , Singapore .
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16
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Duan PC, Manz DH, Dechert S, Demeshko S, Meyer F. Reductive O2 Binding at a Dihydride Complex Leading to Redox Interconvertible μ-1,2-Peroxo and μ-1,2-Superoxo Dinickel(II) Intermediates. J Am Chem Soc 2018; 140:4929-4939. [DOI: 10.1021/jacs.8b01468] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Pirovano P, Twamley B, McDonald AR. Modulation of Nickel Pyridinedicarboxamidate Complexes to Explore the Properties of High-valent Oxidants. Chemistry 2018; 24:5238-5245. [DOI: 10.1002/chem.201704618] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Paolo Pirovano
- School of Chemistry, Trinity College Dublin; The University of Dublin, College Green; Dublin 2 Ireland
- CRANN/AMBER Nanoscience Institute, Trinity College Dublin; The University of Dublin, College Green; Dublin 2 Ireland
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin; The University of Dublin, College Green; Dublin 2 Ireland
| | - Aidan R. McDonald
- School of Chemistry, Trinity College Dublin; The University of Dublin, College Green; Dublin 2 Ireland
- CRANN/AMBER Nanoscience Institute, Trinity College Dublin; The University of Dublin, College Green; Dublin 2 Ireland
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18
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DeRosha DE, Mercado BQ, Lukat-Rodgers G, Rodgers KR, Holland PL. Enhancement of C−H Oxidizing Ability in Co-O 2 Complexes through an Isolated Heterobimetallic Oxo Intermediate. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Daniel E. DeRosha
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Brandon Q. Mercado
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Gudrun Lukat-Rodgers
- Department of Chemistry and Biochemistry; North Dakota State University; PO Box 6050 Fargo ND 58108 USA
| | - Kenton R. Rodgers
- Department of Chemistry and Biochemistry; North Dakota State University; PO Box 6050 Fargo ND 58108 USA
| | - Patrick L. Holland
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
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19
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Holze P, Corona T, Frank N, Braun-Cula B, Herwig C, Company A, Limberg C. Activation of Dioxygen at a Lewis Acidic Nickel(II) Complex: Characterization of a Metastable Organoperoxide Complex. Angew Chem Int Ed Engl 2017; 56:2307-2311. [PMID: 28111896 DOI: 10.1002/anie.201609526] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 10/31/2016] [Indexed: 11/05/2022]
Abstract
In metal-mediated O2 activation, nickel(II) compounds hardly play a role, but recently it has been shown that enzymes can use nickel(II) for O2 activation. Now a low-coordinate Lewis acidic nickel(II) complex has been synthesized that reacts with O2 to give a nickel(II) organoperoxide, as proposed for the enzymatic system. Its formation was studied further by UV/Vis absorption spectroscopy, leading to the observation of a short-lived intermediate that proved to be reactive in both oxygen atom transfer and hydrogen abstraction reactions, while the peroxide efficiently transfers O atoms. Both for the enzyme and for the functional model, the key to O2 activation is proposed to represent a concomitant electron shift from the substrate/co-ligand.
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Affiliation(s)
- Patrick Holze
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Teresa Corona
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, 17003, Girona, Catalonia, Spain
| | - Nicolas Frank
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Christian Herwig
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, 17003, Girona, Catalonia, Spain
| | - Christian Limberg
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
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20
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Zimmermann P, Limberg C. Activation of Small Molecules at Nickel(I) Moieties. J Am Chem Soc 2017; 139:4233-4242. [DOI: 10.1021/jacs.6b12434] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Philipp Zimmermann
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Christian Limberg
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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21
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DeRosha DE, Mercado BQ, Lukat-Rodgers G, Rodgers KR, Holland PL. Enhancement of C−H Oxidizing Ability in Co-O2 Complexes through an Isolated Heterobimetallic Oxo Intermediate. Angew Chem Int Ed Engl 2017; 56:3211-3215. [DOI: 10.1002/anie.201612010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Daniel E. DeRosha
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Brandon Q. Mercado
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Gudrun Lukat-Rodgers
- Department of Chemistry and Biochemistry; North Dakota State University; PO Box 6050 Fargo ND 58108 USA
| | - Kenton R. Rodgers
- Department of Chemistry and Biochemistry; North Dakota State University; PO Box 6050 Fargo ND 58108 USA
| | - Patrick L. Holland
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
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22
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Holze P, Corona T, Frank N, Braun-Cula B, Herwig C, Company A, Limberg C. Activation of Dioxygen at a Lewis Acidic Nickel(II) Complex: Characterization of a Metastable Organoperoxide Complex. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609526] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Patrick Holze
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Teresa Corona
- Grup de Química Bioinspirada; Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; 17003 Girona Catalonia Spain
| | - Nicolas Frank
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Christian Herwig
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Anna Company
- Grup de Química Bioinspirada; Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; 17003 Girona Catalonia Spain
| | - Christian Limberg
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
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23
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Lin CY, Power PP. Complexes of Ni(i): a “rare” oxidation state of growing importance. Chem Soc Rev 2017; 46:5347-5399. [DOI: 10.1039/c7cs00216e] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthesis and diverse structures, reactivity (small molecule activation and catalysis) and magnetic properties of Ni(i) complexes are summarized.
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Affiliation(s)
- Chun-Yi Lin
- Department of Chemistry
- University of California
- Davis
- USA
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24
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Oxygen activation by mononuclear Mn, Co, and Ni centers in biology and synthetic complexes. J Biol Inorg Chem 2016; 22:407-424. [PMID: 27853875 DOI: 10.1007/s00775-016-1402-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 10/21/2016] [Indexed: 10/20/2022]
Abstract
The active sites of metalloenzymes that catalyze O2-dependent reactions generally contain iron or copper ions. However, several enzymes are capable of activating O2 at manganese or nickel centers instead, and a handful of dioxygenases exhibit activity when substituted with cobalt. This minireview summarizes the catalytic properties of oxygenases and oxidases with mononuclear Mn, Co, or Ni active sites, including oxalate-degrading oxidases, catechol dioxygenases, and quercetin dioxygenase. In addition, recent developments in the O2 reactivity of synthetic Mn, Co, or Ni complexes are described, with an emphasis on the nature of reactive intermediates featuring superoxo-, peroxo-, or oxo-ligands. Collectively, the biochemical and synthetic studies discussed herein reveal the possibilities and limitations of O2 activation at these three "overlooked" metals.
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25
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Corona T, Company A. Spectroscopically Characterized Synthetic Mononuclear Nickel-Oxygen Species. Chemistry 2016; 22:13422-9. [PMID: 27484613 DOI: 10.1002/chem.201602414] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Indexed: 11/07/2022]
Abstract
Iron, copper, and manganese are the predominant metals found in oxygenases that perform efficient and selective hydrocarbon oxidations and for this reason, a large number of the corresponding metal-oxygen species has been described. However, in recent years nickel has been found in the active site of enzymes involved in oxidation processes, in which nickel-dioxygen species are proposed to play a key role. Owing to this biological relevance and to the existence of different catalytic protocols that involve the use of nickel catalysts in oxidation reactions, there is a growing interest in the detection and characterization of nickel-oxygen species relevant to these processes. In this Minireview the spectroscopically/structurally characterized synthetic superoxo, peroxo, and oxonickel species that have been reported to date are described. From these studies it becomes clear that nickel is a very promising metal in the field of oxidation chemistry with still unexplored possibilities.
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Affiliation(s)
- Teresa Corona
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, 17003, Girona, Catalonia, Spain
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, 17003, Girona, Catalonia, Spain.
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26
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Kundu S, Stieber SCE, Ferrier MG, Kozimor SA, Bertke JA, Warren TH. Redox Non‐Innocence of Nitrosobenzene at Nickel. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - S. Chantal E. Stieber
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
- Department of Chemistry and Biochemistry California State Polytechnic University Pomona CA 91768 USA
| | - Maryline G. Ferrier
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Stosh A. Kozimor
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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27
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Kundu S, Stieber SCE, Ferrier MG, Kozimor SA, Bertke JA, Warren TH. Redox Non‐Innocence of Nitrosobenzene at Nickel. Angew Chem Int Ed Engl 2016; 55:10321-5. [DOI: 10.1002/anie.201605026] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - S. Chantal E. Stieber
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
- Department of Chemistry and Biochemistry California State Polytechnic University Pomona CA 91768 USA
| | - Maryline G. Ferrier
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Stosh A. Kozimor
- Inorganic, Isotope and Actinide Chemistry, Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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28
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Zhang S, Fallah H, Gardner EJ, Kundu S, Bertke JA, Cundari TR, Warren TH. A Dinitrogen Dicopper(I) Complex via a Mixed‐Valence Dicopper Hydride. Angew Chem Int Ed Engl 2016; 55:9927-31. [DOI: 10.1002/anie.201603970] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 06/14/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Shiyu Zhang
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Hengameh Fallah
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Evan J. Gardner
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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29
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Zhang S, Fallah H, Gardner EJ, Kundu S, Bertke JA, Cundari TR, Warren TH. A Dinitrogen Dicopper(I) Complex via a Mixed‐Valence Dicopper Hydride. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603970] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shiyu Zhang
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Hengameh Fallah
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Evan J. Gardner
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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30
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Hohloch S, Kriegel BM, Bergman RG, Arnold J. Group 5 chemistry supported by β-diketiminate ligands. Dalton Trans 2016; 45:15725-15745. [DOI: 10.1039/c6dt01770c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
β-Diketiminate (BDI) ligands are widely used supporting ligands in modern organometallic chemistry and are capable of stabilizing various metal complexes in multiple oxidation states and coordination environments.
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Affiliation(s)
| | | | | | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
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31
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Kafentzi MC, Orio M, Réglier M, Yao S, Kuhlmann U, Hildebrandt P, Driess M, Simaan AJ, Ray K. Changing the chemical and physical properties of high valent heterobimetallic bis-(μ-oxido) Cu–Ni complexes by ligand effects. Dalton Trans 2016; 45:15994-16000. [DOI: 10.1039/c6dt02391f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new heterobimetallic [LNiO2Cu(RPY2)]+ (RPY2 = N-substituted bis 2-pyridyl(ethylamine) ligands with R = indane, 3a or R = Me, 3b) complexes have been spectroscopically trapped at low temperatures.
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Affiliation(s)
| | - Maylis Orio
- Aix Marseille Univ
- CNRS
- Centrale Marseille
- iSm2
- Marseille
| | | | - Shenglai Yao
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Uwe Kuhlmann
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Peter Hildebrandt
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Matthias Driess
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | | | - Kallol Ray
- Department of Chemistry
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
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32
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Wallen CM, Wielizcko M, Bacsa J, Scarborough CC. Heterotrimetallic sandwich complexes supported by sulfonamido ligands. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00233h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
CoII complexes bearing sulfonamido ligands derived from tris(2-aminoethyl)amine (H6tren) assemble into complex architectures in the presence of Group II ions through interactions between the Group II ion and the sulfonyl oxygens.
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Affiliation(s)
| | | | - John Bacsa
- Department of Chemistry
- Emory University
- Atlanta
- USA
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33
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Ingram AJ, Walker KL, Zare RN, Waymouth RM. Catalytic Role of Multinuclear Palladium–Oxygen Intermediates in Aerobic Oxidation Followed by Hydrogen Peroxide Disproportionation. J Am Chem Soc 2015; 137:13632-46. [DOI: 10.1021/jacs.5b08719] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrew J. Ingram
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305-5080, United States
| | - Katherine L. Walker
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305-5080, United States
| | - Richard N. Zare
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305-5080, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305-5080, United States
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34
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Rettenmeier CA, Wadepohl H, Gade LH. Structural Characterization of a Hydroperoxo Nickel Complex and Its Autoxidation: Mechanism of Interconversion between Peroxo, Superoxo, and Hydroperoxo Species. Angew Chem Int Ed Engl 2015; 54:4880-4. [DOI: 10.1002/anie.201500141] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Indexed: 11/06/2022]
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35
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Rettenmeier CA, Wadepohl H, Gade LH. Structural Characterization of a Hydroperoxo Nickel Complex and Its Autoxidation: Mechanism of Interconversion between Peroxo, Superoxo, and Hydroperoxo Species. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500141] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Schax F, Suhr S, Bill E, Braun B, Herwig C, Limberg C. A Heterobimetallic Superoxide Complex formed through O2Activation between Chromium(II) and a Lithium Cation. Angew Chem Int Ed Engl 2014; 54:1352-6. [DOI: 10.1002/anie.201409294] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Indexed: 11/11/2022]
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37
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Schax F, Suhr S, Bill E, Braun B, Herwig C, Limberg C. Bildung eines heterobimetallischen Superoxidkomplexes durch Sauerstoffaktivierung zwischen Chrom(II) und einem Lithiumkation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409294] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Bang S, Lee YM, Hong S, Cho KB, Nishida Y, Seo MS, Sarangi R, Fukuzumi S, Nam W. Redox-inactive metal ions modulate the reactivity and oxygen release of mononuclear non-haem iron(III)-peroxo complexes. Nat Chem 2014; 6:934-40. [PMID: 25242490 PMCID: PMC4215643 DOI: 10.1038/nchem.2055] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 07/31/2014] [Indexed: 12/23/2022]
Abstract
Redox-inactive metal ions that function as Lewis acids play pivotal roles in modulating the reactivity of oxygen-containing metal complexes and metalloenzymes, such as the oxygen-evolving complex in photosystem II and its small-molecule mimics. Here we report the synthesis and characterization of non-haem iron(III)-peroxo complexes that bind redox-inactive metal ions, (TMC)Fe(III)-(μ,η(2):η(2)-O2)-M(n+) (M(n+) = Sr(2+), Ca(2+), Zn(2+), Lu(3+), Y(3+) and Sc(3+); TMC, 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane). We demonstrate that the Ca(2+) and Sr(2+) complexes showed similar electrochemical properties and reactivities in one-electron oxidation or reduction reactions. However, the properties and reactivities of complexes formed with stronger Lewis acidities were found to be markedly different. Complexes that contain Ca(2+) or Sr(2+) ions were oxidized by an electron acceptor to release O2, whereas the release of O2 did not occur for complexes that bind stronger Lewis acids. We discuss these results in the light of the functional role of the Ca(2+) ion in the oxidation of water to dioxygen by the oxygen-evolving complex.
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Affiliation(s)
- Suhee Bang
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Seungwoo Hong
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Kyung-Bin Cho
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Yusuke Nishida
- Department of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Mi Sook Seo
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Ritimukta Sarangi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
- Department of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Department of Bioinspired Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
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39
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Ray K, Pfaff FF, Wang B, Nam W. Status of Reactive Non-Heme Metal–Oxygen Intermediates in Chemical and Enzymatic Reactions. J Am Chem Soc 2014; 136:13942-58. [DOI: 10.1021/ja507807v] [Citation(s) in RCA: 351] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kallol Ray
- Department
of Chemistry, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Florian Felix Pfaff
- Department
of Chemistry, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Bin Wang
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Wonwoo Nam
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
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40
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Hervé A, Bouzidi Y, Berthet JC, Belkhiri L, Thuéry P, Boucekkine A, Ephritikhine M. U–CN versus Ce–NC Coordination in Trivalent Complexes Derived from M[N(SiMe3)2]3 (M = Ce, U). Inorg Chem 2014; 53:6995-7013. [DOI: 10.1021/ic500939t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alexandre Hervé
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Yamina Bouzidi
- URCHEMS,
Département de Chimie, Université Constantine 1, 25000 Constantine, Algeria
| | - Jean-Claude Berthet
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Lotfi Belkhiri
- URCHEMS,
Département de Chimie, Université Constantine 1, 25000 Constantine, Algeria
| | - Pierre Thuéry
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Abdou Boucekkine
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Michel Ephritikhine
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
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41
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Meier G, Steck V, Braun B, Eißler A, Herrmann R, Ahrens M, Laubenstein R, Braun T. Synthesis and Structures of Fluorinated (β‐Diketiminato)rhodium Complexes: Si–H Activation of Silanes at a Carbonyl Complex. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402087] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gregor Meier
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Viktoria Steck
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Beatrice Braun
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Anna Eißler
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Roy Herrmann
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Mike Ahrens
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Reik Laubenstein
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
| | - Thomas Braun
- Humboldt‐Universität zu Berlin, Department of Chemistry, Brook‐Taylor‐Straße 2, 12489 Berlin, http://www2.hu‐berlin.de/chemie/braun/
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42
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Perivolaris A, Stoumpos CC, Karpinska J, Ryder AG, Frost JM, Mason K, Prescimone A, Slawin AMZ, Kessler VG, Mathieson JS, Cronin L, Brechin EK, Papaefstathiou GS. A family of [Ni8] cages templated by μ6-peroxide from dioxygen activation. Inorg Chem Front 2014. [DOI: 10.1039/c4qi00048j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
[Ni8] cages templated by η3:η3:μ6-O22− from O2 activation: the ligand found oxidized within the cages.
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Affiliation(s)
- Alexandros Perivolaris
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
| | - Constantinos C. Stoumpos
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
| | - Jolanta Karpinska
- Nanoscale Biophotonics Laboratory
- School of Chemistry
- National University of Ireland
- Galway, Ireland
| | - Alan G. Ryder
- Nanoscale Biophotonics Laboratory
- School of Chemistry
- National University of Ireland
- Galway, Ireland
| | - Jamie M. Frost
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh, UK
| | - Kevin Mason
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh, UK
| | | | | | - Vadim G. Kessler
- Department of Chemistry
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
| | | | - Leroy Cronin
- WestCHEM
- School of Chemistry
- The University of Glasgow
- Glasgow, UK
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh, UK
| | - Giannis S. Papaefstathiou
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
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Lee YM, Bang S, Kim YM, Cho J, Hong S, Nomura T, Ogura T, Troeppner O, Ivanović-Burmazović I, Sarangi R, Fukuzumi S, Nam W. A Mononuclear Nonheme Iron(III)-Peroxo Complex Binding Redox-Inactive Metal Ions. Chem Sci 2013; 4:3917-3923. [PMID: 25426288 PMCID: PMC4241270 DOI: 10.1039/c3sc51864g] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Redox-inactive metal ions that function as Lewis acids play pivotal roles in modulating reactivities of oxygen-containing metal complexes in a variety of biological and biomimetic reactions, including dioxygen activation/formation and functionalization of organic substrates. Mononuclear nonheme iron(III)-peroxo species are invoked as active oxygen intermediates in the catalytic cycles of dioxygen activation by nonheme iron enzymes and their biomimetic compounds. Here, we report mononuclear nonheme iron(III)-peroxo complexes binding redox-inactive metal ions, [(TMC)FeIII(O2)]+-M3+ (M3+ = Sc3+ and Y3+; TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), which are characterized spectroscopically as a 'side-on' iron(III)-peroxo complex binding a redox-inactive metal ion, (TMC)FeIII-(μ,η2:η2-O2)-M3+ (2-M). While an iron(III)-peroxo complex, [(TMC)FeIII(O2)]+, does not react with electron donors (e.g., ferrocene), one-electron reduction of the iron(III)-peroxo complexes binding redox-inactive metal ions occurs readily upon addition of electron donors, resulting in the generation of an iron(IV)-oxo complex, [(TMC)FeIV(O)]2+ (4), via heterolytic O-O bond cleavage of the peroxide ligand. The rates of the conversion of 2-M to 4 are found to depend on the Lewis acidity of the redox-inactive metal ions and the oxidation potential of the electron donors. We have also determined the fundamental electron-transfer properties of 2-M, such as the reduction potential and the reorganization energy in electron-transfer reaction. Based on the results presented herein, we have proposed a mechanism for the reactions of 2-M and electron donors; the reduction of 2-M to the reduced species, (TMC)FeII-(O2)-M3+ (2'-M), is the rate-determining step, followed by heterolytic O-O bond cleavage of the reduced species to form 4. The present results provide a biomimetic example demonstrating that redox-inactive metal ions bound to an iron(III)-peroxo intermediate play a significant role in activating the peroxide O-O bond to form a high-valent iron(IV)-oxo species.
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Affiliation(s)
- Yong-Min Lee
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Suhee Bang
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Yun Mi Kim
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Jaeheung Cho
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea ; Department of Emerging Materials Science, DGIST, Daegu 711-873, Korea
| | - Seungwoo Hong
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Takashi Nomura
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, Hyogo 678-1297, Japan
| | - Takashi Ogura
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, Hyogo 678-1297, Japan
| | - Oliver Troeppner
- Department of Chemistry and Pharmacy, University of Erlangen-Nürnberg, 91058 Erlangen, Germany
| | | | - Ritimukta Sarangi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Shunichi Fukuzumi
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea ; Department of Material and Life Science, Graduate School of Engineering, ALCA, Japan Science and Technology Agency (JST), Osaka University, Suita, Osaka 565-0871, Japan
| | - Wonwoo Nam
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
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Li F, Van Heuvelen KM, Meier KK, Münck E, Que L. Sc3+-triggered oxoiron(IV) formation from O2 and its non-heme iron(II) precursor via a Sc3+-peroxo-Fe3+ intermediate. J Am Chem Soc 2013; 135:10198-201. [PMID: 23802702 PMCID: PMC3760346 DOI: 10.1021/ja402645y] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report that redox-inactive Sc(3+) can trigger O2 activation by the Fe(II)(TMC) center (TMC = tetramethylcyclam) to generate the corresponding oxoiron(IV) complex in the presence of BPh4(-) as an electron donor. To model a possible intermediate in the above reaction, we generated an unprecedented Sc(3+) adduct of [Fe(III)(η(2)-O2)(TMC)](+) by an alternative route, which was found to have an Fe(3+)-(μ-η(2):η(2)-peroxo)-Sc(3+) core and to convert to the oxoiron(IV) complex. These results have important implications for the role a Lewis acid can play in facilitating O-O bond cleavage during the course of O2 activation at non-heme iron centers.
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Affiliation(s)
- Feifei Li
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, MN 55455
| | - Katherine M. Van Heuvelen
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, MN 55455
| | - Katlyn K. Meier
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213
| | - Eckard Münck
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213
| | - Lawrence Que
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, MN 55455
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Kundu S, Pfaff FF, Miceli E, Zaharieva I, Herwig C, Yao S, Farquhar ER, Kuhlmann U, Bill E, Hildebrandt P, Dau H, Driess M, Limberg C, Ray K. A high-valent heterobimetallic [Cu(III)(μ-O)2Ni(III)]2+ core with nucleophilic oxo groups. Angew Chem Int Ed Engl 2013; 52:5622-6. [PMID: 23589478 PMCID: PMC4084805 DOI: 10.1002/anie.201300861] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Indexed: 12/22/2022]
Abstract
A heterobimetallic CuNi bis(μ-oxo) diamond core is shown to possess nucleophilic oxo groups, and has been demonstrated for the first time as a viable intermediate during the deformylation of fatty aldehydes by cyanobacterial aldehyde decarbonylase.
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Affiliation(s)
- Subrata Kundu
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
| | - Florian Felix Pfaff
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
| | - Enrico Miceli
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
| | - Ivelina Zaharieva
- Freie Universität Berlin, FB Physik, Arnimallee 14, D-14195-Berlin (Germany)
| | - Christian Herwig
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
| | - Shenglai Yao
- Technische-Universität Berlin, Institut für Chemie, Straβe des 17 Juni 135, D-10623-Berlin (Germany)
| | - Erik R. Farquhar
- Case Western Reserve University Center for Synchrotron Biosciences and Center for Proteomics and Bioinformatics, National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY-11973-USA
| | - Uwe Kuhlmann
- Technische-Universität Berlin, Institut für Chemie, Straβe des 17 Juni 135, D-10623-Berlin (Germany)
| | - Eckhard Bill
- Max-Plank-Institut für Chemische Energiekonversion, Stiftstraβe 34-36, D-45470-Mülhein an der Ruhr (Germany)
| | - Peter Hildebrandt
- Technische-Universität Berlin, Institut für Chemie, Straβe des 17 Juni 135, D-10623-Berlin (Germany)
| | - Holger Dau
- Freie Universität Berlin, FB Physik, Arnimallee 14, D-14195-Berlin (Germany)
| | - Matthias Driess
- Technische-Universität Berlin, Institut für Chemie, Straβe des 17 Juni 135, D-10623-Berlin (Germany)
| | - Christian Limberg
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
| | - Kallol Ray
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straβe 2, D-12489-Berlin (Germany). Fax: (+49) 30 2093 7387
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Kundu S, Pfaff FF, Miceli E, Zaharieva I, Herwig C, Yao S, Farquhar ER, Kuhlmann U, Bill E, Hildebrandt P, Dau H, Driess M, Limberg C, Ray K. A High-Valent Heterobimetallic [CuIII(μ-O)2NiIII]2+Core with Nucleophilic Oxo Groups. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300861] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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47
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McMullin CL, Pierpont AW, Cundari TR. Complete methane-to-methanol catalytic cycle: A DFT study of oxygen atom transfer from N2O to late-row (MNi, Cu, Zn) β-diketiminate CH activation catalysts. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.07.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Chlupatý T, Padělková Z, Lyčka A, Brus J, Růžička A. Reactivity of lithium n-butyl amidinates towards group 14 metal(II) chlorides providing series of hetero- and homoleptic tetrylenes. Dalton Trans 2012; 41:5010-9. [PMID: 22415327 DOI: 10.1039/c2dt12472f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The new class of homo- and heteroleptic n-butyl-N,N'-disubstituted amidinato group 14 metal(II) complexes were prepared by salt elimination from starting lithium amidinates and metal(II) chlorides both in stoichiometric ratio 2:1 and 1:1, respectively. The target amidinates contain less bulky isopropyl or cyclohexyl as well as a sterically demanding aromatic substituent. Desired 1:1 Pb(II) complexes are not accessible by the described procedure. Ligand transfer from Pb to Sn is taking place if homoleptic Pb(II) compounds are reacted with SnCl(2). Prepared tetrylenes were characterized by (1)H, (13)C, (119)Sn and (207)Pb NMR spectroscopy in C(6)D(6) or THF-d(8). X-Ray diffraction studies of one heteroleptic Ge(II) monomeric where the coordination polyhedron of the three coordinated germanium atoms is a trigonal pyramid, two different dimeric structures of heteroleptic Sn(II) complexes, one amidine hydroiodide byproduct and the oxidation product of the heteroleptic chloro Sn(II) amidinate as a tetranuclear species with two Sn(IV) and two Sn(II) atoms in central Sn(2)O(2) planar ring were performed on appropriate single crystals. The dimer of one of the heteroleptic stannylenes reveals a new type of monomeric units connection, weak Sn-Cl contact and an interaction of the tin atom with delocalized N-C(C)-N system of the amidinato ligand of the second molecule.
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Affiliation(s)
- Tomáš Chlupatý
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic
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Yao S, Driess M. Lessons from isolable nickel(I) precursor complexes for small molecule activation. Acc Chem Res 2012; 45:276-87. [PMID: 21875073 DOI: 10.1021/ar200156r] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Small-molecule activation by transition metals is essential to numerous organic transformations, both biological and industrial. Creating useful metal-mediated activation systems often depends on stabilizing the metal with uncommon low oxidation states and low coordination numbers. This provides a redox-active metal center with vacant coordination sites well suited for interacting with small molecules. Monovalent nickel species, with their d(9) electronic configuration, are moderately strong one-electron reducing agents that are synthetically attractive if they can be isolated. They represent suitable reagents for closing the knowledge gap in nickel-mediated activation of small molecules. Recently, the first strikingly stable dinuclear β-diketiminate nickel(I) precursor complexes were synthesized, proving to be suitable promoters for small-molecule binding and activation. They have led to many unprecedented nickel complexes bearing activated small molecules in different reduction stages. In this Account, we describe selected achievements in the activation of nitrous oxide (N(2)O), O(2), the heavier chalcogens (S, Se, and Te), and white phosphorus (P(4)) through this β-diketiminatonickel(I) precursor species. We emphasize the reductive activation of O(2), owing to its promise in oxidation processes. The one-electron-reduced O(2) activation product, that is, the corresponding β-diketiminato-supported Ni-O(2) complex, is a genuine superoxonickel(II) complex, representing an important intermediate in the early stages of O(2) activation. It selectively acts as an oxygen-atom transfer agent, hydrogen-atom scavenger, or both towards exogenous organic substrates to yield oxidation products. The one-electron reduction of the superoxonickel(II) moiety was examined by using elemental potassium, β-diketiminatozinc(II) chloride, and β-diketiminatoiron(I) complexes, affording the first heterobimetallic complexes featuring a [NiO(2)M] subunit (M is K, Zn, or Fe). Through density functional theory (DFT) calculations, the geometric and electronic structures of these complexes were established and their distinctive reactivity, including the unprecedented monooxygenase-like activity of a bis(μ-oxo)nickel-iron complex, was studied. The studies have further led to other heterobimetallic complexes containing a [NiO(2)M] core, which are useful for understanding the influence of the heterometal on structure-reactivity relationships. The activation of N(2)O led directly to the hydrogen-atom abstraction product bis(μ-hydroxo)nickel(II) species and prevented isolation of any intermediate. In contrast, the activation of elemental S, Se, and Te with the same nickel(I) reagent furnished activation products with superchalcogenido E(2)(-) (E is S, Se, or Te) and dichalcogenido E(2)(2-) ligand in different activation stages. The isolable supersulfidonickel(II) subunit may serve as a versatile building block for the synthesis of heterobimetallic disulfidonickel(II) complexes with a [NiS(2)M] core. In the case of white phosphorus, the P(4) molecule has been coordinated to the nickel(I) center of dinuclear β-diketiminatonickel(I) precursor complexes; however, the whole P(4) subunit is a weaker electron acceptor than the dichalcogen ligands E(2), thus remaining unreduced. This P(4) binding mode is rare and could open new doors for subsequent functionalization of P(4). Our advances in understanding how these small molecules are bound to a nickel(I) center and are activated for further transformation offer promise for designing new catalysts. These nickel-containing complexes offer exceptional potential for nickel-mediated transformations of organic molecules and as model compounds for mimicking active sites of nickel-containing metalloenzymes.
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Affiliation(s)
- Shenglai Yao
- Institute of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Sekr. C2, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Matthias Driess
- Institute of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Sekr. C2, Strasse des 17. Juni 135, 10623 Berlin, Germany
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