1
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Debnath S, Laxmi S, McCubbin Stepanic O, Quek SY, van Gastel M, DeBeer S, Krämer T, England J. A Four-Coordinate End-On Superoxocopper(II) Complex: Probing the Link between Coordination Number and Reactivity. J Am Chem Soc 2024; 146:23704-23716. [PMID: 39192778 PMCID: PMC11363018 DOI: 10.1021/jacs.3c12268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 07/12/2024] [Accepted: 07/19/2024] [Indexed: 08/29/2024]
Abstract
Although the reactivity of five-coordinate end-on superoxocopper(II) complexes, CuII(η1-O2•-), is dominated by hydrogen atom transfer, the majority of four-coordinate CuII(η1-O2•-) complexes published thus far display nucleophilic reactivity. To investigate the origin of this difference, we have developed a four-coordinate end-on superoxocopper(II) complex supported by a sterically encumbered bis(2-pyridylmethyl)amine ligand, dpb2-MeBPA (1), and compared its substrate reactivity with that of a five-coordinate end-on superoxocopper(II) complex ligated by a similarly substituted tris(2-pyridylmethyl)amine, dpb3-TMPA (2). Kinetic isotope effect (KIE) measurements and correlation of second-order rate constants (k2's) versus oxidation potentials (Eox) for a range of phenols indicates that the complex [CuII(η1-O2•-)(1)]+ reacts with phenols via a similar hydrogen atom transfer (HAT) mechanism to [CuII(η1-O2•-)(2)]+. However, [CuII(η1-O2•-)(1)]+ performs HAT much more quickly, with its k2 for reaction with 2,6-di-tert-butyl-4-methoxyphenol (MeO-ArOH) being >100 times greater. Furthermore, [CuII(η1-O2•-)(1)]+ can oxidize C-H bond substrates possessing stronger bonds than [CuII(η1-O2•-)(2)]+ is able to, and it reacts with N-methyl-9,10-dihydroacridine (MeAcrH2) approximately 200 times faster. The much greater facility for substrate oxidation displayed by [CuII(η1-O2•-)(1)]+ is attributed to it possessing higher inherent electrophilicity than [CuII(η1-O2•-)(2)]+, which is a direct consequence of its lower coordination number. These observations are of relevance to enzymes in which four-coordinate end-on superoxocopper(II) intermediates, rather than their five-coordinate congeners, are routinely invoked as the active oxidants responsible for substrate oxidation.
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Affiliation(s)
- Suman Debnath
- Division
of Chemistry and Biological Chemistry, School of Chemistry, Chemical
Engineering and Biotechnology, Nanyang Technological
University, 21 Nanyang Link, 637371 Singapore
| | - Shoba Laxmi
- Division
of Chemistry and Biological Chemistry, School of Chemistry, Chemical
Engineering and Biotechnology, Nanyang Technological
University, 21 Nanyang Link, 637371 Singapore
| | - Olivia McCubbin Stepanic
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34–36, Mülheim an der Ruhr D-45470, Germany
| | - Sebastian Y. Quek
- Division
of Chemistry and Biological Chemistry, School of Chemistry, Chemical
Engineering and Biotechnology, Nanyang Technological
University, 21 Nanyang Link, 637371 Singapore
| | - Maurice van Gastel
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz, Mülheim
an der Ruhr D-45470, Germany
| | - Serena DeBeer
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34–36, Mülheim an der Ruhr D-45470, Germany
| | - Tobias Krämer
- Department
of Chemistry, Maynooth University, Maynooth W23 F2H6, Co. Kildare, Ireland
- Hamilton
Institute, Maynooth University, Maynooth W23 F2H6, Co. Kildare, Ireland
| | - Jason England
- Division
of Chemistry and Biological Chemistry, School of Chemistry, Chemical
Engineering and Biotechnology, Nanyang Technological
University, 21 Nanyang Link, 637371 Singapore
- School
of
Chemistry, University of Lincoln, Lincoln LN6 7TW, U.K.
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2
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Chen D, Lepori C, Guillot R, Gil R, Bezzenine S, Hannedouche J. A Rationally Designed Iron(II) Catalyst for C(sp 3)-C(sp 2) and C(sp 3)-C(sp 3) Suzuki-Miyaura Cross-Coupling. Angew Chem Int Ed Engl 2024; 63:e202408419. [PMID: 38774966 DOI: 10.1002/anie.202408419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Indexed: 07/02/2024]
Abstract
Despite the paramount importance of the Suzuki-Miyaura coupling (SMC) in academia and industry, and the great promise of iron to offer sustainable catalysis, iron-catalyzed SMC involving sp3-hybridized partners is still in its infancy. We herein report the development of a versatile, well-defined electron-deficient anilido-aldimine iron(II) catalyst. This catalyst effectively performed C(sp3)-C(sp2) and C(sp3)-C(sp3) SMC of alkyl halide electrophiles and (hetero)aryl boronic ester and alkyl borane nucleophiles respectively, in the presence of a lithium amide base. These couplings operated under mild reaction conditions and displayed wide functional group compatibility including various medicinally relevant N-, O- and S-based heterocycles. They also tolerated primary, secondary and tertiary alkyl halides (Br, Cl, I), electron-neutral, -rich and -poor boronic esters and primary and secondary alkyl boranes. Our methodology could be directly and efficiently applied to synthesize key intermediates relevant to pharmaceuticals and a potential drug candidate. For C(sp3)-C(sp2) couplings, radical probe experiments militated in favor of a carbon-centered radical derived from the electrophile. At the same time, reactions run with a pre-formed activated boron nucleophile coupled to competition experiments supported the involvement of neutral, rather than an anionic, (hetero)aryl boronic ester in the key transmetalation step.
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Affiliation(s)
- Donghuang Chen
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
| | - Clément Lepori
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
| | - Richard Gil
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
| | - Sophie Bezzenine
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
| | - Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 avenue des Sciences, 91400, Orsay, France
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3
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De Tovar J, Leblay R, Wang Y, Wojcik L, Thibon-Pourret A, Réglier M, Simaan AJ, Le Poul N, Belle C. Copper-oxygen adducts: new trends in characterization and properties towards C-H activation. Chem Sci 2024; 15:10308-10349. [PMID: 38994420 PMCID: PMC11234856 DOI: 10.1039/d4sc01762e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/11/2024] [Indexed: 07/13/2024] Open
Abstract
This review summarizes the latest discoveries in the field of C-H activation by copper monoxygenases and more particularly by their bioinspired systems. This work first describes the recent background on copper-containing enzymes along with additional interpretations about the nature of the active copper-oxygen intermediates. It then focuses on relevant examples of bioinorganic synthetic copper-oxygen intermediates according to their nuclearity (mono to polynuclear). This includes a detailed description of the spectroscopic features of these adducts as well as their reactivity towards the oxidation of recalcitrant Csp3 -H bonds. The last part is devoted to the significant expansion of heterogeneous catalytic systems based on copper-oxygen cores (i.e. within zeolite frameworks).
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Affiliation(s)
- Jonathan De Tovar
- Université Grenoble-Alpes, CNRS, Département de Chimie Moléculaire Grenoble France
| | - Rébecca Leblay
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Institut des Sciences Moléculaires de Marseille Marseille France
| | - Yongxing Wang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Institut des Sciences Moléculaires de Marseille Marseille France
| | - Laurianne Wojcik
- Université de Brest, Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique Brest France
| | | | - Marius Réglier
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Institut des Sciences Moléculaires de Marseille Marseille France
| | - A Jalila Simaan
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Institut des Sciences Moléculaires de Marseille Marseille France
| | - Nicolas Le Poul
- Université de Brest, Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique Brest France
| | - Catherine Belle
- Université Grenoble-Alpes, CNRS, Département de Chimie Moléculaire Grenoble France
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4
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Wang SY, Zhang JR, Guo M, Hua W. Interpreting the Cu-O 2 Antibonding Nature in Two Cu-O 2 Complexes from Cu L-Edge X-ray Absorption Spectra. Inorg Chem 2023; 62:17115-17125. [PMID: 37828769 DOI: 10.1021/acs.inorgchem.3c01896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Cu-O2 structures play important roles in bioinorganic chemistry and enzyme catalysis, where the bonding between the Cu and O2 parts serves as a fundamental research concern. Here, we performed a multiconfigurational study on the copper L2,3-edge X-ray absorption spectra (XAS) of two copper enzyme model complexes to gain a better understanding of the antibonding nature from the clearly interpreted structure-spectroscopy relation. We obtained spectra in good agreement with the experiments by using the restricted active space second-order perturbation theory (RASPT2) method, which facilitated reliable chemical analysis. Spectral feature interpretations were supported by computing the spin-orbit natural transition orbitals. All major features were assigned to be mainly from Cu 2p to antibonding orbitals between Cu 3d and O2 π*, Cu 3d-πO-O* (type A), and a few also to mixed antibonding/bonding orbitals between Cu 3d and O2 π, Cu 3d ± πO-O (type M). Our calculations provided a clear illustration of the interactions between Cu 3d and O2 π*/π orbitals that are carried in the metal L-edge XAS.
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Affiliation(s)
- Sheng-Yu Wang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Department of Applied Physics, School of Science, Nanjing University of Science and Technology, 210094 Nanjing, China
| | - Jun-Rong Zhang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Department of Applied Physics, School of Science, Nanjing University of Science and Technology, 210094 Nanjing, China
| | - Meiyuan Guo
- Department of Chemistry-Ångström Laboratory, Uppsala University, Uppsala 75105, Sweden
| | - Weijie Hua
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Department of Applied Physics, School of Science, Nanjing University of Science and Technology, 210094 Nanjing, China
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5
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Nguyen BX, VandeVen W, MacNeil GA, Zhou W, Paterson AR, Walsby CJ, Chiang L. High-Valent Ni and Cu Complexes of a Tetraanionic Bis(amidateanilido) Ligand. Inorg Chem 2023; 62:15180-15194. [PMID: 37676794 DOI: 10.1021/acs.inorgchem.3c02358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
High-valent metal species are often invoked as intermediates during enzymatic and synthetic catalytic cycles. Anionic donors are often required to stabilize such high-valent states by forming strong bonds with the Lewis acidic metal centers while decreasing their oxidation potentials. In this report, we discuss the synthesis of two high-valent metal complexes [ML]+ in which the NiIII and CuIII centers are ligated by a new tetradentate, tetraanionic bis(amidateanilido) ligand. [ML]+, obtained via chemical oxidation of ML, exhibits UV-vis-NIR, EPR, and XANES spectra characteristic of square planar, high-valent MIII species, suggesting the locus of oxidation for both [ML]+ is predominantly metal-based. This is supported by theoretical analyses, which also support the observed visible transitions as ligand-to-metal charge transfer transitions characteristic of square planar, high-valent MIII species. Notably, [ML]+ can also be obtained via O2 oxidation of ML due to its remarkably negative oxidation potentials (CuL/[CuL]+: -1.16 V, NiL/[NiL]+: -1.01 V vs Fc/Fc+ in MeCN). This demonstrates the exceptionally strong donating nature of the tetraanionic bis(amidateanilido) ligation and its ability to stabilize high-valent metal centers..
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Affiliation(s)
- Bach X Nguyen
- Department of Chemistry, University of the Fraser Valley, Abbotsford, British Columbia V2S 7M8, Canada
- Department of Chemistry, Simon Fraser University, Burnaby, British Columba V5A 1S6, Canada
| | - Warren VandeVen
- Department of Chemistry, Simon Fraser University, Burnaby, British Columba V5A 1S6, Canada
| | - Gregory A MacNeil
- Department of Chemistry, Simon Fraser University, Burnaby, British Columba V5A 1S6, Canada
| | - Wen Zhou
- Department of Chemistry, Simon Fraser University, Burnaby, British Columba V5A 1S6, Canada
| | - Alisa R Paterson
- Canadian Light Source, 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Charles J Walsby
- Department of Chemistry, Simon Fraser University, Burnaby, British Columba V5A 1S6, Canada
| | - Linus Chiang
- Department of Chemistry, University of the Fraser Valley, Abbotsford, British Columbia V2S 7M8, Canada
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6
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Chand K, Meitei NJ, Chang YL, Tsai CL, Chen HY, Hsu SCN. Ligand Degradation Study of Unsymmetrical β-Diketiminato Copper Dioxygen Adducts: The Length Chelating Arm Effect. ACS OMEGA 2023; 8:21096-21106. [PMID: 37332796 PMCID: PMC10268616 DOI: 10.1021/acsomega.3c02004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/12/2023] [Indexed: 06/20/2023]
Abstract
An investigation on the reactivity of O2 binding to unsymmetrical β-diketiminato copper(I) complexes by spectroscopic and titration analysis was performed. The length of chelating pyridyl arms (pyridylmethyl arm vs pyridylethyl arm) leads to the formation of mono- or di-nuclear copper-dioxygen species at -80 °C. The pyridylmethyl arm adduct (L1CuO2) forms mononuclear copper-oxygen species and shows ligand degradation, resulting in the formation of (2E,3Z)-N-(2,6-diisopropylphenyl)-4-(((E)-pyridin-2-ylmethylene)amino)pent-3-en-2-imine, which slowly converts to its cyclization isomer 1-(2,6-diisopropylphenyl)-4,6-dimethyl-2-(pyridin-2-yl)-1,2-dihydropyrimidine after addition of NH4OH at room temperature. On the other hand, the pyridylethyl arm adduct [(L2Cu)2(μ-O)2] forms dinuclear species at -80 °C and does not show any ligand degradation product. Instead, free ligand formation was observed after the addition of NH4OH. These experimental observations and product analysis results indicate that the chelating length of pyridyl arms governs the Cu/O2 binding ratio and the ligand degradation behavior.
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Affiliation(s)
- Kuldeep Chand
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Naorem Jemes Meitei
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Yu-Lun Chang
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
- Department
of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Cheng-Long Tsai
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Hsing-Yin Chen
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Sodio C. N. Hsu
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
- Department
of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
- Department
of Medical Research, Kaohsiung Medical University
Hospital, Kaohsiung 807, Taiwan
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7
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Jeong D, Selverstone Valentine J, Cho J. Bio-inspired mononuclear nonheme metal peroxo complexes: Synthesis, structures and mechanistic studies toward understanding enzymatic reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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8
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Theoretical perspective on mononuclear copper-oxygen mediated C–H and O–H activations: A comparison between biological and synthetic systems. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63974-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Rotärmel T, Becker J, Schindler S. Syntheses and investigation of metal complexes with macrocyclic polythioether ligands. Faraday Discuss 2022; 234:70-85. [PMID: 35171171 DOI: 10.1039/d1fd00062d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper(I) complexes with the macrocyclic thioether ligands 1,4,8,11-tetrathiacyclotetradecane (tetrathiacyclam, 14-S4) and 1,8-dithia-4,11-diazacyclotetradecane (dithiacyclam, 14-N2S2) were synthesised and structurally characterised. While the copper(I) complexes showed no reactivity towards dioxygen, the formation of "dioxygen adduct complexes" could be spectroscopically detected with ozone using low temperature stopped-flow techniques. Furthermore, it was possible to synthesise and characterise iron(II) and cobalt(II) complexes with the tetrathiacyclam ligand. No "dioxygen adduct" intermediates were observed when these complexes were reacted with dioxygen or ozone. Depending on the reaction conditions, the coordination of the metal ions could be controlled (endo- vs. exo-coordination and cis- vs. trans-coordination) and in addition to mononuclear complexes, also coordination polymers were obtained.
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Affiliation(s)
- Thomas Rotärmel
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392 Gießen, Germany.
| | - Jonathan Becker
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392 Gießen, Germany.
| | - Siegfried Schindler
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392 Gießen, Germany.
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10
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Quek SY, Debnath S, Laxmi S, van Gastel M, Krämer T, England J. Sterically Stabilized End-On Superoxocopper(II) Complexes and Mechanistic Insights into Their Reactivity with O-H, N-H, and C-H Substrates. J Am Chem Soc 2021; 143:19731-19747. [PMID: 34783549 DOI: 10.1021/jacs.1c07837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Instability of end-on superoxocopper(II) complexes, with respect to conversion to peroxo-bridged dicopper(II) complexes, has largely constrained their study to very low temperatures. This limits their kinetic capacity to oxidize substrates. In response, we have developed a series of bulky ligands, Ar3-TMPA (Ar = tpb, dpb, dtbpb), and used them to support copper(I) complexes that react with O2 to yield [CuII(η1-O2•-)(Ar3-TMPA)]+ species, which are stable against dimerization at all temperatures. Binding of O2 saturates at subambient temperatures and can be reversed by warming. The onset of oxygenation for the Ar = tpb and dpb systems is observed at 25 °C, and all three [CuII(η1-O2•-)(Ar3-TMPA)]+ complexes are stable against self-decay at temperatures of ≤-20 °C. This provides a wide temperature window for study of these complexes, which was exploited by performing extensive reaction kinetics measurements for [CuII(η1-O2•-)(tpb3-TMPA)]+ using a broad range of O-H, N-H, and C-H bond substrates. This includes correlation of second order rate constants (k2) versus oxidation potentials (Eox) for a range of phenols, construction of Eyring plots, and temperature-dependent kinetic isotope effect (KIE) measurements. The data obtained indicate that reaction with all substrates proceeds via H atom transfer (HAT), reaction with the phenols proceeds with significant charge transfer, and full tunneling of both H and D atoms occurs in the case of 1,2-diphenylhydrazine and 4-methoxy-2,6-di-tert-butylphenol. Oxidation of C-H bonds proved to be kinetically challenging, and whereas [CuII(η1-O2•-)(tpb3-TMPA)]+ can oxidize moderately strong O-H and N-H bonds, it is only able to oxidize very weak C-H bonds.
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Affiliation(s)
- Sebastian Y Quek
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Suman Debnath
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Shoba Laxmi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Maurice van Gastel
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany
| | - Tobias Krämer
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare W23 F2H6, Ireland.,Hamilton Institute, Maynooth University, Maynooth, Co. Kildare W23 F2H6, Ireland
| | - Jason England
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.,Department of Chemistry, University of Lincoln, Lincoln LN6 7TW, U.K
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11
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Pan HR, Chen HJ, Wu ZH, Ge P, Ye S, Lee GH, Hsu HF. Structural and Spectroscopic Evidence for a Side-on Fe(III)-Superoxo Complex Featuring Discrete O-O Bond Distances. JACS AU 2021; 1:1389-1398. [PMID: 34604849 PMCID: PMC8479760 DOI: 10.1021/jacsau.1c00184] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Indexed: 05/26/2023]
Abstract
The O-O bond length is often used as a structural indicator to determine the valence states of bound O2 ligands in biological metal-dioxygen intermediates and related biomimetic complexes. Here, we report very distinct O-O bond lengths found for three crystallographic forms (1.229(4), 1.330(4), 1.387(2) Å at 100 K) of a side-on iron-dioxygen species. Despite their different O-O bond distances, all forms possess the same electronic structure of Fe(III)-O2 •-, as evidenced by their indistinguishable spectroscopic features. Density functional theory and ab initio calculations, which successfully reproduce spectroscopic parameters, predict a flat potential energy surface of an η2-O2 motif binding to the iron center regarding the O-O distance. Therefore, the discrete O-O bond lengths observed likely arise from differential intermolecular interactions in the second coordination sphere. The work suggests that the O-O distance is not a reliable benchmark to unequivocally identify the valence state of O2 ligands for metal-dioxygen species in O2-utilizing metalloproteins and synthetic complexes.
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Affiliation(s)
- Hung-Ruei Pan
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hsin-Jou Chen
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Zong-Han Wu
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Pu Ge
- School
of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China
| | - Shengfa Ye
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- Max-Planck-Institut
für Kohlenforschung, Mülheim
an der Ruhr D-45470, Germany
| | - Gene-Hsiang Lee
- Department
of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Hua-Fen Hsu
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
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12
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Liu H, Shen Q. Well-defined organometallic Copper(III) complexes: Preparation, characterization and reactivity. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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14
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Donnelly JM, Lermyte F, Wolny JA, Walker M, Breeze BG, Needham RJ, Müller CS, O'Connor PB, Schünemann V, Collingwood JF, Sadler PJ. Cu(III)-bis-thiolato complex forms an unusual mono-thiolato Cu(III)-peroxido adduct. Chem Commun (Camb) 2021; 57:69-72. [PMID: 33337460 DOI: 10.1039/d0cc06921c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The stable complex [bis(toluene-3,4-dithiolato)copper(iii)][NEt3H] has been synthesised and characterised as a square-planar Cu(iii) complex by X-ray photoelectron spectroscopy, cyclic voltammetry and DFT calculations. Intriguingly, when fragmented in FTICR-MS, an unusual [(toluene-3,4-dithiolate)Cu(iii)(peroxide)]- complex is formed by reaction with oxygen. Natural 1,2-dithiolenes known to bind molybdenum might stabilise Cu(iii) in vivo.
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Affiliation(s)
- Jane M Donnelly
- School of Engineering, University of Warwick, Gibbet Hill Road, Coventry CV4 7Al, UK
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15
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16
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Yang YC, Wu R, Yang M, Chen X, Weng WZ, Zhou ZH. Formation of N-oxido copper ethylenediaminetetraacetate and propanediaminetetraacetate and their selective degradation to iminodiacetate and propanediaminediacetate. Dalton Trans 2019; 48:13388-13395. [PMID: 31432836 DOI: 10.1039/c9dt02355k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
N-Oxido copper(ii) ethylenediaminetetraacetate Na4n[Cu2(edtaO2)2(H2O)4]n·13nH2O (2) (H4edta = ethylenediaminetetraacetic acid, C10H16O8N2) and N-oxido copper(ii) 1,3-propanediaminetetraacetate Na5nOn[Cu2(HpdtaO2)2Cl]n·12.5nH2O (4) (H4pdta = 1,3-propanediaminetetraacetic acid, C11H18O8N2) were obtained from the reactions of copper(ii) edta and pdta respectively with hydrogen peroxide. The copper ions in 2 and 4 are hexa-coordinated by edtaO2 or pdtaO2 ligands, forming 1D chain structures. Further reactions of 2 and 4 at lower pH values result in the isolation of copper(ii) iminodiacetate K[Cu(ida)(H2O)2Cl] (3) (H2ida = iminodiacetate acid, C4H7O4N) and copper(ii) propanediaminediacetate [Cu2(pdda)2]n·nH2O (5) (H2pdda = propanediaminediacetic acid, C7H10O4N2), respectively, which show the selective degradation of ethylenediaminetetraacetate and propanediaminetetraacetate.
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Affiliation(s)
- Yu-Chen Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, People's Republic of China. and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Rui Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Min Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Xi Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Wei-Zheng Weng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Zhao-Hui Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China.
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17
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Schön F, Biebl F, Greb L, Leingang S, Grimm‐Lebsanft B, Teubner M, Buchenau S, Kaifer E, Rübhausen MA, Himmel H. On the Metal Cooperativity in a Dinuclear Copper–Guanidine Complex for Aliphatic C−H Bond Cleavage by Dioxygen. Chemistry 2019; 25:11257-11268. [DOI: 10.1002/chem.201901906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Florian Schön
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Florian Biebl
- Institut für Nanostruktur- und FestkörperphysikUniversität Hamburg and Center for Free Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany
| | - Lutz Greb
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Simone Leingang
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Benjamin Grimm‐Lebsanft
- Institut für Nanostruktur- und FestkörperphysikUniversität Hamburg and Center for Free Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany
| | - Melissa Teubner
- Institut für Nanostruktur- und FestkörperphysikUniversität Hamburg and Center for Free Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany
| | - Sören Buchenau
- Institut für Nanostruktur- und FestkörperphysikUniversität Hamburg and Center for Free Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Michael A. Rübhausen
- Institut für Nanostruktur- und FestkörperphysikUniversität Hamburg and Center for Free Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany
| | - Hans‐Jörg Himmel
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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18
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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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19
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Affiliation(s)
- James D. Grayson
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, U.K
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20
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Li XX, Cho KB, Nam W. A theoretical investigation into the first-row transition metal–O2 adducts. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00407f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Effects of both metal center and ligand ring size on the properties of metal–O2 adducts.
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Affiliation(s)
- Xiao-Xi Li
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
| | - Kyung-Bin Cho
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
- Department of Chemistry
| | - Wonwoo Nam
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
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21
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Adam SM, Wijeratne GB, Rogler PJ, Diaz DE, Quist DA, Liu JJ, Karlin KD. Synthetic Fe/Cu Complexes: Toward Understanding Heme-Copper Oxidase Structure and Function. Chem Rev 2018; 118:10840-11022. [PMID: 30372042 PMCID: PMC6360144 DOI: 10.1021/acs.chemrev.8b00074] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Heme-copper oxidases (HCOs) are terminal enzymes on the mitochondrial or bacterial respiratory electron transport chain, which utilize a unique heterobinuclear active site to catalyze the 4H+/4e- reduction of dioxygen to water. This process involves a proton-coupled electron transfer (PCET) from a tyrosine (phenolic) residue and additional redox events coupled to transmembrane proton pumping and ATP synthesis. Given that HCOs are large, complex, membrane-bound enzymes, bioinspired synthetic model chemistry is a promising approach to better understand heme-Cu-mediated dioxygen reduction, including the details of proton and electron movements. This review encompasses important aspects of heme-O2 and copper-O2 (bio)chemistries as they relate to the design and interpretation of small molecule model systems and provides perspectives from fundamental coordination chemistry, which can be applied to the understanding of HCO activity. We focus on recent advancements from studies of heme-Cu models, evaluating experimental and computational results, which highlight important fundamental structure-function relationships. Finally, we provide an outlook for future potential contributions from synthetic inorganic chemistry and discuss their implications with relevance to biological O2-reduction.
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Affiliation(s)
- Suzanne M. Adam
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Gayan B. Wijeratne
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Patrick J. Rogler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Daniel E. Diaz
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - David A. Quist
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jeffrey J. Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kenneth D. Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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22
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Kochem A, Molloy JK, Gellon G, Leconte N, Philouze C, Berthiol F, Jarjayes O, Thomas F. A Structurally Characterized Cu III Complex Supported by a Bis(anilido) Ligand and Its Oxidative Catalytic Activity. Chemistry 2017; 23:13929-13940. [PMID: 28742929 DOI: 10.1002/chem.201702010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Indexed: 01/23/2023]
Abstract
Three copper(II) complexes of the (R,R)-N,N'-bis(3,5-di-tert-butyl-2-aminobenzylidene)-1,2-diaminocyclohexane ligand, namely [Cu(N L)], [Cu(N LH)]+ and [Cu(N LH2 )]2+ , were prepared and structurally characterized. In [Cu(N LH2 )]2+ the copper ion lies in an octahedral geometry with the aniline groups coordinated in equatorial positions. In [Cu(N L)] the anilines are deprotonated (anilido moieties) and coordinated to an almost square-planar metal ion. Complex [Cu(N L)] displays two oxidation waves at E1/2ox, 1 =-0.14 V and E1/2ox, 2 =0.36 V vs. Fc+ /Fc in CH2 Cl2 . Complex [Cu(N LH2 )]2+ displays an irreversible oxidation wave at high potential (1.21 V), but shows a readily accessible and reversible metal-centered reduction at E1/2red =-0.67 V (CuII /CuI redox couple). Oxidation of [Cu(N L)] by AgSbF6 produces [Cu(N L)](SbF6 ), which was isolated as single crystals. X-ray structure analysis discloses a contraction of the coordination sphere by 0.05 Å upon oxidation, supporting a metal-centered process. Complex [Cu(N L)](SbF6 ) displays an intense NIR band at 1260 nm corresponding to an anilido-to-copper(III) charge transfer transition. This compound slowly evolves in CH2 Cl2 solution towards [Cu(N LH)](SbF6 ), which is a copper(II) complex comprised of both anilido and aniline groups coordinated to the metal center. The copper(III) complex [Cu(N L)](SbF6 ) is an efficient catalyst for benzyl alcohol oxidation, with 236 TON in 24 h at 298 K, without additives other than oxygen and a base.
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Affiliation(s)
- Amélie Kochem
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Jennifer K Molloy
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Gisèle Gellon
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Nicolas Leconte
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Christian Philouze
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Florian Berthiol
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Olivier Jarjayes
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
| | - Fabrice Thomas
- Département de Chimie Moléculaire, UMR-5250, Université Grenoble Alpes, BP 53, 38041, Grenoble Cedex 9, France
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23
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Brand S, Pahl J, Elsen H, Harder S. Frustrated Lewis Pair Chemistry with Magnesium Lewis Acids. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700787] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Steffen Brand
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Jürgen Pahl
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
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24
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Iovan DA, Wrobel AT, McClelland AA, Scharf AB, Edouard GA, Betley TA. Reactivity of a stable copper-dioxygen complex. Chem Commun (Camb) 2017; 53:10306-10309. [PMID: 28869644 PMCID: PMC5605793 DOI: 10.1039/c7cc05014c] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report the isolation of a room temperature stable dipyrromethene Cu(O2) complex featuring a side-on O2 coordination. Reactivity studies highlight the unique ability of the dioxygen adduct for both hydrogen-atom abstraction and acid/base chemistry towards phenols, demonstrating that side-on superoxide species can be reactive entities.
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Affiliation(s)
- Diana A Iovan
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA.
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25
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Trammell R, See YY, Herrmann AT, Xie N, Díaz DE, Siegler MA, Baran PS, Garcia-Bosch I. Decoding the Mechanism of Intramolecular Cu-Directed Hydroxylation of sp 3 C-H Bonds. J Org Chem 2017; 82:7887-7904. [PMID: 28654755 PMCID: PMC5792191 DOI: 10.1021/acs.joc.7b01069] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The use of copper in directed C-H oxidation has been relatively underexplored. In a seminal example, Schönecker showed that copper and O2 promoted the hydroxylation of steroid-containing ligands. Recently, Baran (J. Am. Chem. Soc. 2015, 137, 13776) improved the reaction conditions to oxidize similar substrates with excellent yields. In both reports, the involvement of Cu2O2 intermediates was suggested. In this collaborative article, we studied the hydroxylation mechanism in great detail, resulting in the overhaul of the previously accepted mechanism and the development of improved reaction conditions. Extensive experimental evidence (spectroscopic characterization, kinetic analysis, intermolecular reactivity, and radical trap experiments) is provided to support each of the elementary steps proposed and the hypothesis that a key mononuclear LCuII(OOR) intermediate undergoes homolytic O-O cleavage to generate reactive RO• species, which are responsible for key C-H hydroxylation within the solvent cage. These key findings allowed the oxidation protocol to be reformulated, leading to improvements of the reaction cost, practicability, and isolated yield.
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Affiliation(s)
- Rachel Trammell
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Yi Yang See
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Aaron T. Herrmann
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Nan Xie
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Daniel E. Díaz
- Johns Hopkins University, Baltimore, Maryland 21218, United States
| | | | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Isaac Garcia-Bosch
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
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26
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Kretschmer R, Dehmel M, Bodensteiner M. Versatile BulkyN,N′,N′-Substituted 1,2-Ethanediamine Ligands and Their Lithium, Aluminium, and Gallium Derivatives. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601355] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Robert Kretschmer
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Germany
| | - Maximilian Dehmel
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Germany
| | - Michael Bodensteiner
- Zentrale Analytik, Röntgenstrukturanalyse; Universität Regensburg; Universitätsstrasse 31 93053 Regensburg Germany
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27
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Elwell CE, Gagnon NL, Neisen BD, Dhar D, Spaeth AD, Yee GM, Tolman WB. Copper-Oxygen Complexes Revisited: Structures, Spectroscopy, and Reactivity. Chem Rev 2017; 117:2059-2107. [PMID: 28103018 PMCID: PMC5963733 DOI: 10.1021/acs.chemrev.6b00636] [Citation(s) in RCA: 445] [Impact Index Per Article: 63.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A longstanding research goal has been to understand the nature and role of copper-oxygen intermediates within copper-containing enzymes and abiological catalysts. Synthetic chemistry has played a pivotal role in highlighting the viability of proposed intermediates and expanding the library of known copper-oxygen cores. In addition to the number of new complexes that have been synthesized since the previous reviews on this topic in this journal (Mirica, L. M.; Ottenwaelder, X.; Stack, T. D. P. Chem. Rev. 2004, 104, 1013-1046 and Lewis, E. A.; Tolman, W. B. Chem. Rev. 2004, 104, 1047-1076), the field has seen significant expansion in the (1) range of cores synthesized and characterized, (2) amount of mechanistic work performed, particularly in the area of organic substrate oxidation, and (3) use of computational methods for both the corroboration and prediction of proposed intermediates. The scope of this review has been limited to well-characterized examples of copper-oxygen species but seeks to provide a thorough picture of the spectroscopic characteristics and reactivity trends of the copper-oxygen cores discussed.
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Affiliation(s)
- Courtney E Elwell
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Nicole L Gagnon
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Benjamin D Neisen
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Debanjan Dhar
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Andrew D Spaeth
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Gereon M Yee
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - William B Tolman
- Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota , 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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28
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Phanopoulos A, Leung AHM, Yow S, Palomas D, White AJP, Hellgardt K, Horton A, Crimmin MR. Binuclear β-diketiminate complexes of copper(i). Dalton Trans 2017; 46:2081-2090. [DOI: 10.1039/c6dt04246e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reaction of a series of dinucleating bis(β-diketiminate) pro-ligands with mesitylcopper in the presence and absence of mono and diphosphines has allowed the isolation of a new series of dicopper(i) complexes.
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Affiliation(s)
| | | | - Shuhui Yow
- Department of Chemistry
- Imperial College London
- London
- UK
| | - David Palomas
- Department of Chemistry
- Imperial College London
- London
- UK
| | | | - Klaus Hellgardt
- Department of Chemical Engineering
- Imperial College London
- London
- UK
| | - Andrew Horton
- PTI/DX Emerging Technologies
- Shell Global Solutions International B.V
- 1030 BN Amsterdam
- The Netherlands
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29
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First row transition metal complexes of di-o-substituted-diarylamine-based ligands (including carbazoles, acridines and dibenzoazepines). Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Camp C, Arnold J. On the non-innocence of “Nacnacs”: ligand-based reactivity in β-diketiminate supported coordination compounds. Dalton Trans 2016; 45:14462-98. [DOI: 10.1039/c6dt02013e] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
While β-diketiminate (BDI or ‘nacnac’) ligands have been widely adopted to stabilize a wide range of metal ions in multiple oxidation states and coordination numbers, in several occurrences these ligands do not behave as spectators and participate in reactivity.
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Affiliation(s)
- Clément Camp
- Univ Lyon
- CNRS, ESCPE Lyon
- Université Claude Bernard Lyon 1
- C2P2 UMR 5265
- F-69616 Villeurbanne
| | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
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31
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Chang HC, Lo FC, Liu WC, Lin TH, Liaw WF, Kuo TS, Lee WZ. Ambient Stable Trigonal Bipyramidal Copper(III) Complexes Equipped with an Exchangeable Axial Ligand. Inorg Chem 2015; 54:5527-33. [DOI: 10.1021/acs.inorgchem.5b00603] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Feng-Chun Lo
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | | | | | - Wen-Feng Liaw
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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32
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Tomson NC, Williams KD, Dai X, Sproules S, DeBeer S, Warren TH, Wieghardt K. Re-evaluating the Cu K pre-edge XAS transition in complexes with covalent metal-ligand interactions. Chem Sci 2015; 6:2474-2487. [PMID: 29308158 PMCID: PMC5647745 DOI: 10.1039/c4sc03294b] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/11/2015] [Indexed: 01/10/2023] Open
Abstract
Three [Me2NN]Cu(η2-L2) complexes (Me2NN = HC[C(Me)NAr]2; L2 = PhNO (2), (3), PhCH[double bond, length as m-dash]CH2 (4); Ar = 2,6-Me2-C6H3; ArF = 3,5-(CF3)2-C6H3) have been studied by Cu K-edge X-ray absorption spectroscopy, as well as single- and multi-reference computational methods (DFT, TD-DFT, CASSCF, MRCI, and OVB). The study was extended to a range of both known and theoretical compounds bearing 2p-element donors as a means of deriving a consistent view of how the pre-edge transition energy responds in systems with significant ground state covalency. The ground state electronic structures of many of the compounds under investigation were found to be strongly influenced by correlation effects, resulting in ground state descriptions with majority contributions from a configuration comprised of a Cu(ii) metal center anti-ferromagentically coupled to radical anion O2, PhNO, and ligands. In contrast, the styrene complex 4, which displays a Cu K pre-edge transition despite its formal d10 electron configuration, exhibits what can best be described as a Cu(i):(styrene)0 ground state with strong π-backbonding. The Cu K pre-edge features for these complexes increase in energy from 1 to 4, a trend that was tracked to the percent Cu(ii)-character in the ground state. The unexpected shift to higher pre-edge transition energies with decreasing charge on copper (Q Cu) contributed to an assignment of the pre-edge features for these species as arising from metal-to-ligand charge transfer instead of the traditional Cu1s → Cu3d designation.
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Affiliation(s)
- Neil C Tomson
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36 , 45470 Mülheim an der Ruhr , Germany . ;
| | - Kamille D Williams
- Department of Chemistry , Georgetown University , Box 571227-1227 , Washington, D. C. 20057 , USA .
| | - Xuliang Dai
- Department of Chemistry , Georgetown University , Box 571227-1227 , Washington, D. C. 20057 , USA .
| | - Stephen Sproules
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36 , 45470 Mülheim an der Ruhr , Germany . ;
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36 , 45470 Mülheim an der Ruhr , Germany . ;
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , NY 14853 , USA
| | - Timothy H Warren
- Department of Chemistry , Georgetown University , Box 571227-1227 , Washington, D. C. 20057 , USA .
| | - Karl Wieghardt
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36 , 45470 Mülheim an der Ruhr , Germany . ;
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Wang W, Yang Z, Ma X, Roesky HW, Ju Y, Hao P. Preparation of Aluminum Hydrides with Chelating Anilido-Imine Ligands by Addition of an Al-H Bond to a C=N Bond. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201400592] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Peterson RL, Ginsbach JW, Cowley RE, Qayyum MF, Himes RA, Siegler MA, Moore CD, Hedman B, Hodgson KO, Fukuzumi S, Solomon EI, Karlin KD. Stepwise protonation and electron-transfer reduction of a primary copper-dioxygen adduct. J Am Chem Soc 2014; 135:16454-67. [PMID: 24164682 DOI: 10.1021/ja4065377] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The protonation–reduction of a dioxygen adduct with [LCu(I)][B(C6F5)4], cupric superoxo complex [LCu(II)(O2(•–))]+ (1) (L = TMG3tren (1,1,1-tris[2-[N(2)-(1,1,3,3-tetramethylguanidino)]ethyl]amine)) has been investigated. Trifluoroacetic acid (HOAcF) reversibly associates with the superoxo ligand in ([LCu(II)(O2(•–))]+) in a 1:1 adduct [LCu(II)(O2(•–))(HOAcF)](+) (2), as characterized by UV–visible, resonance Raman (rR), nuclear magnetic resonance (NMR), and X-ray absorption (XAS) spectroscopies, along with density functional theory (DFT) calculations. Chemical studies reveal that for the binding of HOAcF with 1 to give 2, Keq = 1.2 × 10(5) M(–1) (−130 °C) and ΔH° = −6.9(7) kcal/mol, ΔS° = −26(4) cal mol(–1) K(–1)). Vibrational (rR) data reveal a significant increase (29 cm(–1)) in vO–O (= 1149 cm(–1)) compared to that known for [LCu(II)(O2(•–))](+) (1). Along with results obtained from XAS and DFT calculations, hydrogen bonding of HOAcF to a superoxo O-atom in 2 is established. Results from NMR spectroscopy of 2 at −120 °C in 2-methyltetrahydrofuran are also consistent with 1/HOAcF = 1:1 formulation of 2 and with this complex possessing a triplet (S = 1) ground state electronic configuration, as previously determined for 1. The pre-equilibrium acid association to 1 is followed by outer-sphere electron-transfer reduction of 2 by decamethylferrocene (Me10Fc) or octamethylferrocene (Me8Fc), leading to the products H2O2, the corresponding ferrocenium salt, and [LCu(II)(OAcF)](+). Second-order rate constants for electron transfer (ket) were determined to be 1365 M(–1) s(–1) (Me10Fc) and 225 M(–1) s(–1) (Me8Fc) at −80 °C. The (bio)chemical relevance of the proton-triggered reduction of the metal-bound dioxygen-derived fragment is discussed.
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Su Q, Li P, He M, Wu Q, Ye L, Mu Y, Ma Y. A new anilido-imine compound containing o-OMe-anilinyl derived from an unexpected adduct: Synthesis, crystal structure and its coordination capability. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Győrffy W, Shiozaki T, Knizia G, Werner HJ. Analytical energy gradients for second-order multireference perturbation theory using density fitting. J Chem Phys 2013; 138:104104. [DOI: 10.1063/1.4793737] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Lee CM, Chuo CH, Chen CH, Hu CC, Chiang MH, Tseng YJ, Hu CH, Lee GH. Structural and Spectroscopic Characterization of a Monomeric Side-On Manganese(IV) Peroxo Complex. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201735] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Lee CM, Chuo CH, Chen CH, Hu CC, Chiang MH, Tseng YJ, Hu CH, Lee GH. Structural and spectroscopic characterization of a monomeric side-on manganese(IV) peroxo complex. Angew Chem Int Ed Engl 2012; 51:5427-30. [PMID: 22511384 DOI: 10.1002/anie.201201735] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Chien-Ming Lee
- Department of Applied Science, National Taitung University, Taitung city 950, Taiwan.
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39
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Zapata-Rivera J, Caballol R, Calzado CJ. The role of macrocyclic ligands in the peroxo/superoxo nature of Ni-O2biomimetic complexes. J Comput Chem 2012; 33:1407-15. [DOI: 10.1002/jcc.22965] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 02/26/2012] [Accepted: 02/28/2012] [Indexed: 01/17/2023]
Affiliation(s)
- Jhon Zapata-Rivera
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo, s/n. 43007 Tarragona, Spain
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Gupta AK, Tolman WB. Cu(I)/O2 chemistry using a β-diketiminate supporting ligand derived from N,N-dimethylhydrazine: a [Cu3O2]3+ complex with novel reactivity. Inorg Chem 2012; 51:1881-8. [PMID: 22268598 DOI: 10.1021/ic202214c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A Cu(I) complex, LCu(CH(3)CN), was prepared and characterized, where L(-) is a sterically unencumbered β-diketiminate ligand, the deprotonated version of 4-(2,2-dimethylhydrazino)dimethylhydrazone-3-penten-2-one (LH). Analysis of FTIR spectra of the products of the reaction of LCu(CH(3)CN) with CO indicate that L(-) is strongly electron donating, and support an equilibrium in solution between monomeric and dimeric forms with terminal and bridging CO ligands, respectively. Low temperature oxygenation of LCu(CH(3)CN) generated a bis(μ-oxo)tricopper complex with a S = 1 [Cu(3)O(2)](3+) core that was identified on the basis of UV-vis (λ(max) (ε, M(-1) cm(-1) per Cu) = 328 (10700), 420 (1500), 590 (835) nm) and X-band electron paramagnetic resonance (EPR) spectroscopy (Δm(s) = 2 transition at 1500 G), electrospray ionization (ESI) mass spectrometry, and spectrophotometric titration (0.35(2) equiv of O(2) per copper atom), magnetic susceptibility (μ(eff) = 2.8(1) BM), and H(2)O(2) detection experiments (no H(2)O(2) evolved upon acidification). Unlike other reported variants supported by neutral N-donor ligands, L(3)Cu(3)O(2) is not reduced by ferrocene, does not abstract H-atoms from phenols or 1,2-dihydroanthracene, oxidizes PPh(3) to Ph(3)P═O, and generates carbonate species upon exposure to CO(2). This unique reactivity for a [Cu(3)O(2)](3+) complex may be traced to the anionic charge and strong electron donating characteristics of L(-).
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Affiliation(s)
- Aalo K Gupta
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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41
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Wang CH, Li CY, Lin CH, Liu YC, Ko BT. Reactions of (E)-N-[2-(benzyliminomethyl)phenyl]-2,6-diisopropylaniline with diethylzinc: Synthesis, characterization and catalytic studies for ring-opening polymerization of ε-caprolactone. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.05.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Cho J, Sarangi R, Annaraj J, Kim SY, Kubo M, Ogura T, Solomon EI, Nam W. Geometric and electronic structure and reactivity of a mononuclear "side-on" nickel(III)-peroxo complex. Nat Chem 2011; 1:568-72. [PMID: 20711413 DOI: 10.1038/nchem.366] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Metal-dioxygen adducts, such as metal-superoxo and -peroxo species, are key intermediates often detected in the catalytic cycles of dioxygen activation by metalloenzymes and biomimetic compounds. The synthesis and spectroscopic characterization of an end-on nickel(II)-superoxo complex with a 14-membered macrocyclic ligand was reported previously. Here we report the isolation, spectroscopic characterization, and high-resolution crystal structure of a mononuclear side-on nickel(III)-peroxo complex with a 12-membered macrocyclic ligand, [Ni(12-TMC)(O(2))](+) (1) (12-TMC = 1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane). Different from the end-on Ni(II)-superoxo complex, the Ni(III)-peroxo complex is not reactive in electrophilic reactions, but is capable of conducting nucleophilic reactions. The Ni(III)-peroxo complex transfers the bound dioxygen to manganese(II) complexes, thus affording the corresponding nickel(II) and manganese(III)-peroxo complexes. The present results demonstrate the significance of supporting ligands in tuning the geometric and electronic structures and reactivities of metal-O(2) intermediates that have been shown to have biological as well as synthetic usefulness in biomimetic reactions.
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Affiliation(s)
- Jaeheung Cho
- Department of Chemistry and Nano Science, Center for Biomimetic Systems, Ewha Womans University, Seoul, Korea
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Haack P, Limberg C, Ray K, Braun B, Kuhlmann U, Hildebrandt P, Herwig C. Dinuclear Copper Complexes Based on Parallel β-Diiminato Binding Sites and their Reactions with O2: Evidence for a Cu−O−Cu Entity. Inorg Chem 2011; 50:2133-42. [DOI: 10.1021/ic101249k] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter Haack
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Christian Limberg
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Kallol Ray
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Beatrice Braun
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Uwe Kuhlmann
- Technische Universität Berlin, Institut für Chemie, Sekr. PC14, Strasse des 17 Juni 135, D-10623 Berlin, Germany
| | - Peter Hildebrandt
- Technische Universität Berlin, Institut für Chemie, Sekr. PC14, Strasse des 17 Juni 135, D-10623 Berlin, Germany
| | - Christian Herwig
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
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Zapata-Rivera J, Caballol R, Calzado CJ. Comparing the peroxo/superoxo nature of the interaction between molecular O2 and β-diketiminato-copper and nickel complexes. Phys Chem Chem Phys 2011; 13:20241-7. [DOI: 10.1039/c1cp22121c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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45
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Cho J, Sarangi R, Kang HY, Lee JY, Kubo M, Ogura T, Solomon EI, Nam W. Synthesis, structural, and spectroscopic characterization and reactivities of mononuclear cobalt(III)-peroxo complexes. J Am Chem Soc 2010; 132:16977-86. [PMID: 21062059 PMCID: PMC2995300 DOI: 10.1021/ja107177m] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Metal-dioxygen adducts are key intermediates detected in the catalytic cycles of dioxygen activation by metalloenzymes and biomimetic compounds. In this study, mononuclear cobalt(III)-peroxo complexes bearing tetraazamacrocyclic ligands, [Co(12-TMC)(O(2))](+) and [Co(13-TMC)(O(2))](+), were synthesized by reacting [Co(12-TMC)(CH(3)CN)](2+) and [Co(13-TMC)(CH(3)CN)](2+), respectively, with H(2)O(2) in the presence of triethylamine. The mononuclear cobalt(III)-peroxo intermediates were isolated and characterized by various spectroscopic techniques and X-ray crystallography, and the structural and spectroscopic characterization demonstrated unambiguously that the peroxo ligand is bound in a side-on η(2) fashion. The O-O bond stretching frequency of [Co(12-TMC)(O(2))](+) and [Co(13-TMC)(O(2))](+) was determined to be 902 cm(-1) by resonance Raman spectroscopy. The structural properties of the CoO(2) core in both complexes are nearly identical; the O-O bond distances of [Co(12-TMC)(O(2))](+) and [Co(13-TMC)(O(2))](+) were 1.4389(17) Å and 1.438(6) Å, respectively. The cobalt(III)-peroxo complexes showed reactivities in the oxidation of aldehydes and O(2)-transfer reactions. In the aldehyde oxidation reactions, the nucleophilic reactivity of the cobalt-peroxo complexes was significantly dependent on the ring size of the macrocyclic ligands, with the reactivity of [Co(13-TMC)(O(2))](+) > [Co(12-TMC)(O(2))](+). In the O(2)-transfer reactions, the cobalt(III)-peroxo complexes transferred the bound peroxo group to a manganese(II) complex, affording the corresponding cobalt(II) and manganese(III)-peroxo complexes. The reactivity of the cobalt-peroxo complexes in O(2)-transfer was also significantly dependent on the ring size of tetraazamacrocycles, and the reactivity order in the O(2)-transfer reactions was the same as that observed in the aldehyde oxidation reactions.
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Affiliation(s)
- Jaeheung Cho
- Department of Bioinspired Science, Department of Chemistry and Nano 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
| | - Hye Yeon Kang
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Jung Yoon Lee
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
| | - Minoru Kubo
- 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
| | - Edward I. Solomon
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Wonwoo Nam
- Department of Bioinspired Science, Department of Chemistry and Nano Science, Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea
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Zapata-Rivera J, Caballol R, Calzado CJ. Electronic structure and relative stability of 1:1 Cu-O2 adducts from difference-dedicated configuration interaction calculations. J Comput Chem 2010; 32:1144-58. [DOI: 10.1002/jcc.21697] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 09/13/2010] [Accepted: 09/13/2010] [Indexed: 11/11/2022]
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Donoghue PJ, Gupta AK, Boyce DW, Cramer CJ, Tolman WB. An anionic, tetragonal copper(II) superoxide complex. J Am Chem Soc 2010; 132:15869-71. [PMID: 20977226 DOI: 10.1021/ja106244k] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Insight into copper-oxygen species proposed as intermediates in oxidation catalysis is provided by the identification of a Cu(II)-superoxide complex supported by a sterically hindered, pyridinedicarboxamide ligand. A tetragonal, end-on superoxide structure is proposed based on DFT calculations and UV-vis, NMR, EPR, and resonance Raman spectroscopy. The complex yields a trans-1,2-peroxodicopper(II) species upon reaction with [(tmpa)Cu(CH(3)CN)]OTf and, unlike other known Cu(II)-superoxide complexes, acts as a base rather than an electrophilic (H-atom abstracting) reagent in reactions with phenols.
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Affiliation(s)
- Patrick J Donoghue
- Department of Chemistry, Supercomputing Institute, and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA
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48
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Zhang D, Yue Q, Wang J, Shigeng G, Weng L. Synthesis, characterization of a novel anilido-iminato cobalt (II) complex and its application for addition polymerization of norbornene. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.09.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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49
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Wiese S, Kapoor P, Williams KD, Warren TH. Nitric Oxide Oxidatively Nitrosylates Ni(I) and Cu(I) C-Organonitroso Adducts. J Am Chem Soc 2009; 131:18105-11. [DOI: 10.1021/ja903550n] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Stefan Wiese
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227
| | - Pooja Kapoor
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227
| | - Kamille D. Williams
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227
| | - Timothy H. Warren
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227
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50
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Gong Y, Zhou M, Andrews L. Spectroscopic and Theoretical Studies of Transition Metal Oxides and Dioxygen Complexes. Chem Rev 2009; 109:6765-808. [DOI: 10.1021/cr900185x] [Citation(s) in RCA: 324] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Gong
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Mingfei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Lester Andrews
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
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