1
|
Hota PK, Panda S, Phan H, Kim B, Siegler MA, Karlin KD. Dioxygenase Chemistry in Nucleophilic Aldehyde Deformylations Utilizing Dicopper O 2-Derived Peroxide Complexes. J Am Chem Soc 2024; 146:23854-23871. [PMID: 39141923 PMCID: PMC11472664 DOI: 10.1021/jacs.4c06243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
The chemistry of copper-dioxygen complexes is relevant to copper enzymes in biology as well as in (ligand)Cu-O2 (or Cu2-O2) species utilized in oxidative transformations. For overall energy considerations, as applicable in chemical synthesis, it is beneficial to have an appropriate atom economy; both O-atoms of O2(g) are transferred to the product(s). However, examples of such dioxygenase-type chemistry are extremely rare or not well documented. Herein, we report on nucleophilic oxidative aldehyde deformylation reactivity by the peroxo-dicopper(II) species [Cu2II(BPMPO-)(O22-)]1+ {BPMPO-H = 2,6-bis{[(bis(2-pyridylmethyl)amino]methyl}-4-methylphenol)} and [Cu2II(XYLO-)(O22-)]1+ (XYLO- = a BPMPO- analogue possessing bis(2-{2-pyridyl}ethyl)amine chelating arms). Their dicopper(I) precursors are dioxygenase catalysts. The O2(g)-derived peroxo-dicopper(II) intermediates react rapidly with aldehydes like 2-phenylpropionaldehyde (2-PPA) and cyclohexanecarboxaldehyde (CCA) in 2-methyltetrahydrofuran at -90 °C. Warming to room temperature (RT) followed by workup results in good yields of formate (HC(O)O-) along with ketones (acetophenone or cyclohexanone). Mechanistic investigation shows that [Cu2II(BPMPO-)(O22-)]1+ species initially reacts reversibly with the aldehydes to form detectable dicopper(II) peroxyhemiacetal intermediates, for which optical titrations provide the Keq (at -90 °C) of 73.6 × 102 M-1 (2-PPA) and 10.4 × 102 M-1 (CCA). In the reaction of [Cu2II(XYLO-)(O22-)]1+ with 2-PPA, product complexes characterized by single-crystal X-ray crystallography are the anticipated dicopper(I) complex, [Cu2I(XYLO-)]1+ plus a mixed-valent Cu(I)Cu(II)-formate species. Formate was further identified and confirmed by 1H NMR spectroscopy and electrospray ionization mass spectrometry (ESI-MS) analysis. Using 18O2(g)-isotope labeling the reaction produced a high yield of 18-O incorporated acetophenone as well as formate. The overall results signify that true dioxygenase reactions have occurred, supported by a thorough mechanistic investigation.
Collapse
Affiliation(s)
- Pradip Kumar Hota
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sanjib Panda
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Hai Phan
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Bohee Kim
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Maxime A Siegler
- 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
| |
Collapse
|
2
|
Karlin KD, Hota PK, Kim B, Panda S, Phan H. Synthetic Copper-(Di)oxygen Complex Generation and Reactivity Relevant to Copper Protein O 2-Processing. BULLETIN OF JAPAN SOCIETY OF COORDINATION CHEMISTRY 2024; 83:16-27. [PMID: 39372915 PMCID: PMC11448371 DOI: 10.4019/bjscc.83.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
Synthetic copper-dioxygen complex design, generation and characterization, play a crucial role in elucidating the structure/function of copper-based metalloenzymes, including dopamine β-monooxygenase, lytic polysaccharide monooxygenases, particulate methane monooxygenase, tyrosinase, hemocyanin, and catechol oxidase. Designing suitable ligands to closely mimic the variable active sites found in these enzymes poses a challenging task for synthetic bioinorganic chemists. In this review, we have highlighted a few representative ligand systems capable of stabilizing various copper-dioxygen species such as CuII-(O2 •-)(superoxide), Cu2 II-(μ-η 1:η 1-O2 2-) (trans/cis-peroxide), Cu2 II-(μ-η 2:η 2-O2 2-)(side-on peroxide) and Cun II--OOH (hydroperoxide) species. Here, we discuss the ligand type utilized, syntheses, and spectroscopic characterization of these species. We also delineate reactivity patterns, particularly electrophilic arene hydroxylation by a side-on peroxo species which occurs via a "NIH shift" mechanism and thermodynamic-kinetic relationships among Cu2-(O2 •-)/O2 2-/-OOH moieties.
Collapse
Affiliation(s)
| | | | - Bohee Kim
- Department of Chemistry, Johns Hopkins University
| | - Sanjib Panda
- Department of Chemistry, Johns Hopkins University
| | - Hai Phan
- Department of Chemistry, Johns Hopkins University
| |
Collapse
|
3
|
Marelli E, Lyu J, Morin M, Leménager M, Shang T, Yüzbasi NS, Aegerter D, Huang J, Daffé ND, Clark AH, Sheptyakov D, Graule T, Nachtegaal M, Pomjakushina E, Schmidt TJ, Krack M, Fabbri E, Medarde M. Cobalt-free layered perovskites RBaCuFeO 5+δ (R = 4f lanthanide) as electrocatalysts for the oxygen evolution reaction. EES CATALYSIS 2024; 2:335-350. [PMID: 38222064 PMCID: PMC10782807 DOI: 10.1039/d3ey00142c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/30/2023] [Indexed: 01/16/2024]
Abstract
Co-based perovskite oxides are intensively studied as promising catalysts for electrochemical water splitting in an alkaline environment. However, the increasing Co demand by the battery industry is pushing the search for Co-free alternatives. Here we report a systematic study of the Co-free layered perovskite family RBaCuFeO5+δ (R = 4f lanthanide), where we uncover the existence of clear correlations between electrochemical properties and several physicochemical descriptors. Using a combination of advanced neutron and X-ray synchrotron techniques with ab initio DFT calculations we demonstrate and rationalize the positive impact of a large R ionic radius in their oxygen evolution reaction (OER) activity. We also reveal that, in these materials, Fe3+ is the transition metal cation the most prone to donate electrons. We also show that similar R3+/Ba2+ ionic radii favor the incorporation and mobility of oxygen in the layered perovskite structure and increase the number of available O diffusion paths, which have an additional, positive impact on both, the electric conductivity and the OER process. An unexpected result is the observation of a clear surface reconstruction exclusively in oxygen-rich samples (δ > 0), a fact that could be related to their superior OER activity. The encouraging intrinsic OER values obtained for the most active electrocatalyst (LaBaCuFeO5.49), together with the possibility of industrially producing this material in nanocrystalline form should inspire the design of other Co-free oxide catalysts with optimal properties for electrochemical water splitting.
Collapse
Affiliation(s)
- Elena Marelli
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
- Electrochemistry Laboratory, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Jike Lyu
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Mickaël Morin
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
- Excelsus Structural Solutions (Swiss) AG, PARK InnovAARE CH-5234 Villigen PSI Switzerland
| | - Maxime Leménager
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Tian Shang
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
- Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science, East China Normal University Shanghai China
| | - N Sena Yüzbasi
- High Performance Ceramics, EMPA, Swiss Federal Laboratories for Materials Science and Technology CH-8600 Dübendorf Switzerland
| | - Dino Aegerter
- Electrochemistry Laboratory, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Jinzhen Huang
- Electrochemistry Laboratory, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Niéli D Daffé
- Laboratory for Condensed Matter, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Adam H Clark
- Laboratory for Synchrotron Radiation and Femtochemistry, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Denis Sheptyakov
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Thomas Graule
- High Performance Ceramics, EMPA, Swiss Federal Laboratories for Materials Science and Technology CH-8600 Dübendorf Switzerland
| | - Maarten Nachtegaal
- Laboratory for Synchrotron Radiation and Femtochemistry, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Ekaterina Pomjakushina
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Thomas J Schmidt
- Electrochemistry Laboratory, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
- Laboratory of Physical Chemistry, ETH Zürich CH-8093 Zürich Switzerland
| | - Matthias Krack
- Laboratory for Materials Simulations, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Emiliana Fabbri
- Electrochemistry Laboratory, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| | - Marisa Medarde
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
| |
Collapse
|
4
|
Buceta D, Huseyinova S, Cuerva M, Lozano H, Giovanetti LJ, Ramallo-López JM, López-Caballero P, Zanchet A, Mitrushchenkov AO, Hauser AW, Barone G, Huck-Iriart C, Escudero C, Hernández-Garrido JC, Calvino JJ, López-Haro M, de Lara-Castells MP, Requejo FG, López-Quintela MA. Stability and Reversible Oxidation of Sub-Nanometric Cu 5 Metal Clusters: Integrated Experimental Study and Theoretical Modeling. Chemistry 2023; 29:e202301517. [PMID: 37204268 PMCID: PMC10946568 DOI: 10.1002/chem.202301517] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/20/2023]
Abstract
Sub-nanometer metal clusters have special physical and chemical properties, significantly different from those of nanoparticles. However, there is a major concern about their thermal stability and susceptibility to oxidation. In situ X-ray Absorption spectroscopy and Near Ambient Pressure X-ray Photoelectron spectroscopy results reveal that supported Cu5 clusters are resistant to irreversible oxidation at least up to 773 K, even in the presence of 0.15 mbar of oxygen. These experimental findings can be formally described by a theoretical model which combines dispersion-corrected DFT and first principles thermochemistry revealing that most of the adsorbed O2 molecules are transformed into superoxo and peroxo species by an interplay of collective charge transfer within the network of Cu atoms and large amplitude "breathing" motions. A chemical phase diagram for Cu oxidation states of the Cu5 -oxygen system is presented, clearly different from the already known bulk and nano-structured chemistry of Cu.
Collapse
Affiliation(s)
- David Buceta
- Department of Physical Chemistry, Nanomag Laboratory, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Shahana Huseyinova
- Department of Physical Chemistry, Nanomag Laboratory, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Miguel Cuerva
- Department of Physical Chemistry, Nanomag Laboratory, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Héctor Lozano
- Department of Physical Chemistry, Nanomag Laboratory, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Lisandro J Giovanetti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Dto. de Química, Facultad de Ciencias Exactas, UNLP and CONICET, Diag. 113 y 64., 1900, La Plata, Argentina
| | - José M Ramallo-López
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Dto. de Química, Facultad de Ciencias Exactas, UNLP and CONICET, Diag. 113 y 64., 1900, La Plata, Argentina
| | | | - Alexandre Zanchet
- Instituto de Física Fundamental (AbinitSim Unit), CSIC, Serrano 123, 28006, Madrid, Spain
| | | | - Andreas W Hauser
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010, Graz, Austria
| | - Giampaolo Barone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, 90128, Palermo, Italy
| | - Cristián Huck-Iriart
- Laboratorio de Cristalografía Aplicada, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín (UNSAM), Campus Miguelete, 25 de Mayo y Francia, 1650, San Martín, Provincia, Buenos Aires, Argentina
- ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290, Cerdanyola del Vallès, Barcelona, Spain
| | - Carlos Escudero
- ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290, Cerdanyola del Vallès, Barcelona, Spain
| | - Juan Carlos Hernández-Garrido
- Department of Material Science and Metallurgic Engineering and Inorganic Chemistry, Faculty of Science, University of Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - José Juan Calvino
- Department of Material Science and Metallurgic Engineering and Inorganic Chemistry, Faculty of Science, University of Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Miguel López-Haro
- Department of Material Science and Metallurgic Engineering and Inorganic Chemistry, Faculty of Science, University of Cádiz, 11510, Puerto Real, Cádiz, Spain
| | | | - Félix G Requejo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Dto. de Química, Facultad de Ciencias Exactas, UNLP and CONICET, Diag. 113 y 64., 1900, La Plata, Argentina
| | - M Arturo López-Quintela
- Department of Physical Chemistry, Nanomag Laboratory, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
5
|
Tao L, Khramenkova E, Lee I, Ikuno T, Khare R, Jentys A, Fulton JL, Kolganov AA, Pidko EA, Sanchez-Sanchez M, Lercher JA. Speciation and Reactivity Control of Cu-Oxo Clusters via Extraframework Al in Mordenite for Methane Oxidation. J Am Chem Soc 2023; 145:17710-17719. [PMID: 37545395 DOI: 10.1021/jacs.3c04328] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The stoichiometric conversion of methane to methanol by Cu-exchanged zeolites can be brought to highest yields by the presence of extraframework Al and high CH4 chemical potentials. Combining theory and experiments, the differences in chemical reactivity of monometallic Cu-oxo and bimetallic Cu-Al-oxo nanoclusters stabilized in zeolite mordenite (MOR) are investigated. Cu-L3 edge X-ray absorption near-edge structure (XANES), infrared (IR), and ultraviolet-visible (UV-vis) spectroscopies, in combination with CH4 oxidation activity tests, support the presence of two types of active clusters in MOR and allow quantification of the relative proportions of each type in dependence of the Cu concentration. Ab initio molecular dynamics (MD) calculations and thermodynamic analyses indicate that the superior performance of materials enriched in Cu-Al-oxo clusters is related to the activity of two μ-oxo bridges in the cluster. Replacing H2O with ethanol in the product extraction step led to the formation of ethyl methyl ether, expanding this way the applicability of these materials for the activation and functionalization of CH4. We show that competition between different ion-exchanged metal-oxo structures during the synthesis of Cu-exchanged zeolites determines the formation of active species, and this provides guidelines for the synthesis of highly active materials for CH4 activation and functionalization.
Collapse
Affiliation(s)
- Lei Tao
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Elena Khramenkova
- Inorganic Systems Engineering (ISE), Department of Chemical Engineering, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Insu Lee
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Takaaki Ikuno
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Rachit Khare
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Andreas Jentys
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - John L Fulton
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Alexander A Kolganov
- Inorganic Systems Engineering (ISE), Department of Chemical Engineering, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Evgeny A Pidko
- Inorganic Systems Engineering (ISE), Department of Chemical Engineering, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Maricruz Sanchez-Sanchez
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria
| | - Johannes A Lercher
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| |
Collapse
|
6
|
Gianolio D, Higham MD, Quesne MG, Aramini M, Xu R, Large AI, Held G, Velasco-Vélez JJ, Haevecker M, Knop-Gericke A, Genovese C, Ampelli C, Schuster ME, Perathoner S, Centi G, Catlow CRA, Arrigo R. Interfacial Chemistry in the Electrocatalytic Hydrogenation of CO 2 over C-Supported Cu-Based Systems. ACS Catal 2023; 13:5876-5895. [PMID: 37180964 PMCID: PMC10167656 DOI: 10.1021/acscatal.3c01288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 03/31/2023] [Indexed: 05/16/2023]
Abstract
Operando soft and hard X-ray spectroscopic techniques were used in combination with plane-wave density functional theory (DFT) simulations to rationalize the enhanced activities of Zn-containing Cu nanostructured electrocatalysts in the electrocatalytic CO2 hydrogenation reaction. We show that at a potential for CO2 hydrogenation, Zn is alloyed with Cu in the bulk of the nanoparticles with no metallic Zn segregated; at the interface, low reducible Cu(I)-O species are consumed. Additional spectroscopic features are observed, which are identified as various surface Cu(I) ligated species; these respond to the potential, revealing characteristic interfacial dynamics. Similar behavior was observed for the Fe-Cu system in its active state, confirming the general validity of this mechanism; however, the performance of this system deteriorates after successive applied cathodic potentials, as the hydrogen evolution reaction then becomes the main reaction pathway. In contrast to an active system, Cu(I)-O is now consumed at cathodic potentials and not reversibly reformed when the voltage is allowed to equilibrate at the open-circuit voltage; rather, only the oxidation to Cu(II) is observed. We show that the Cu-Zn system represents the optimal active ensembles with stabilized Cu(I)-O; DFT simulations rationalize this observation by indicating that Cu-Zn-O neighboring atoms are able to activate CO2, whereas Cu-Cu sites provide the supply of H atoms for the hydrogenation reaction. Our results demonstrate an electronic effect exerted by the heterometal, which depends on its intimate distribution within the Cu phase and confirms the general validity of these mechanistic insights for future electrocatalyst design strategies.
Collapse
Affiliation(s)
- Diego Gianolio
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - Michael D. Higham
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, Wales CF10 3AT, U.K.
- UK Catalysis
Hub, Research Complex at Harwell, Rutherford
Appleton Laboratory, R92, Harwell, Oxfordshire OX11 0FA, U.K.
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Matthew G. Quesne
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, Wales CF10 3AT, U.K.
- UK Catalysis
Hub, Research Complex at Harwell, Rutherford
Appleton Laboratory, R92, Harwell, Oxfordshire OX11 0FA, U.K.
| | - Matteo Aramini
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - Ruoyu Xu
- Department
of Chemical Engineering, University College
London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Alex I. Large
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - Georg Held
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - Juan-Jesús Velasco-Vélez
- Max-Planck-Institut
für Chemische Energiekonversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Michael Haevecker
- Max-Planck-Institut
für Chemische Energiekonversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Axel Knop-Gericke
- Max-Planck-Institut
für Chemische Energiekonversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Chiara Genovese
- Department
of ChiBioFarAm, ERIC aisbl and CASPE/INSTM, University of Messina, V. le F.Stagno D’ Alcontres 31, 98166 Messina, Italy
| | - Claudio Ampelli
- Department
of ChiBioFarAm, ERIC aisbl and CASPE/INSTM, University of Messina, V. le F.Stagno D’ Alcontres 31, 98166 Messina, Italy
| | | | - Siglinda Perathoner
- Department
of ChiBioFarAm, ERIC aisbl and CASPE/INSTM, University of Messina, V. le F.Stagno D’ Alcontres 31, 98166 Messina, Italy
| | - Gabriele Centi
- Department
of ChiBioFarAm, ERIC aisbl and CASPE/INSTM, University of Messina, V. le F.Stagno D’ Alcontres 31, 98166 Messina, Italy
| | - C. Richard A. Catlow
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, Wales CF10 3AT, U.K.
- UK Catalysis
Hub, Research Complex at Harwell, Rutherford
Appleton Laboratory, R92, Harwell, Oxfordshire OX11 0FA, U.K.
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Rosa Arrigo
- Diamond
Light Source Ltd., Harwell
Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
- School
of Science, Engineering and Environment, University of Salford, Cockcroft Building, Salford, Greater Manchester M5 4WT, U.K.
| |
Collapse
|
7
|
Kipouros I, Solomon EI. New mechanistic insights into coupled binuclear copper monooxygenases from the recent elucidation of the ternary intermediate of tyrosinase. FEBS Lett 2023; 597:65-78. [PMID: 36178078 PMCID: PMC9839588 DOI: 10.1002/1873-3468.14503] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 01/17/2023]
Abstract
Tyrosinase is the most predominant member of the coupled binuclear copper (CBC) protein family. The recent trapping and spectroscopic definition of the elusive catalytic ternary intermediate (enzyme/O2 /monophenol) of tyrosinase dictates a monooxygenation mechanism that revises previous proposals and involves cleavage of the μ-η2 :η2 -peroxide dicopper(II) O-O bond to accept the phenolic proton, followed by monophenolate coordination to copper concomitant with aromatic hydroxylation by the non-protonated μ-oxo. Here, we compare and contrast previously proposed and current mechanistic models for monophenol monooxygenation of tyrosinase. Next, we discuss how these recent insights provide new opportunities towards uncovering structure-function relationships in CBC enzymes, as well as understanding fundamental principles for O2 activation and reactivity by bioinorganic active sites.
Collapse
Affiliation(s)
| | - Edward I Solomon
- Department of Chemistry, Stanford University, CA, USA
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, CA, USA
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Stańczak A, Chalupský J, Rulíšek L, Straka M. Comprehensive Theoretical View of the [Cu2O2] Side-on-Peroxo-/Bis-μ-Oxo Equilibria. Chemphyschem 2022; 23:e202200076. [PMID: 35532185 DOI: 10.1002/cphc.202200076] [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: 01/31/2022] [Revised: 04/20/2022] [Indexed: 11/07/2022]
Abstract
Coupled binuclear copper (CBC) sites are employed by many metalloenzymes to catalyze a broad set of biochemical transformations. Typically, the CBC catalytic sites are activated by the O2 molecule to form various [Cu2O2] reactive species. This has also inspired synthesis and development of various biomimetic inorganic complexes featuring the CBC core. From theoretical perspective, the [Cu2O2] reactivity often hinges on the side-on-peroxo-dicopper(II) (P) vs. bis-μ-oxo-dicopper(III) (O) isomerism - an equilibrium that has become almost iconic in theoretical bioinorganic chemistry. Herein, we present a comprehensive calibration and evaluation of the performance of various composite computational protocols available in contemporary computational chemistry, involving coupled-cluster and multi-reference (relativistic) wave function methods, popular density functionals and solvation models. Starting with the well-studied reference [Cu2O2(NH3)6]2+ system, we compared the performance of electronic structure methods and discussed the relativistic effects. This allowed us to select several 'calibrated' DFT functionals that can be conveniently employed to study ten experimentally well-characterized [Cu2O2] inorganic systems. We mostly correctly predicted the lowest-energy structures (P vs. O) of the studied systems. In addition, we present calibration of the used electronic structure methods for prediction of the spectroscopic features of the [Cu2O2] core.
Collapse
Affiliation(s)
- Agnieszka Stańczak
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences: Ustav organicke chemie a biochemie Akademie ved Ceske republiky, Bioinorganic Chemistry, CZECH REPUBLIC
| | - Jakub Chalupský
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences: Ustav organicke chemie a biochemie Akademie ved Ceske republiky, Bioinorganic Chemistry, CZECH REPUBLIC
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences: Ustav organicke chemie a biochemie Akademie ved Ceske republiky, Bioinorganic Chemistry, CZECH REPUBLIC
| | - Michal Straka
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences: Ustav organicke chemie a biochemie Akademie ved Ceske republiky, Bioinorganic Chemistry, Flemingovo nam. 2, 16610, Prague, CZECH REPUBLIC
| |
Collapse
|
10
|
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]
|
11
|
Kipouros I, Stańczak A, Culka M, Andris E, Machonkin TR, Rulíšek L, Solomon EI. Evidence for H-bonding interactions to the μ-η 2:η 2-peroxide of oxy-tyrosinase that activate its coupled binuclear copper site. Chem Commun (Camb) 2022; 58:3913-3916. [PMID: 35237779 PMCID: PMC8966618 DOI: 10.1039/d2cc00750a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The factors that control the diverse reactivity of the μ-η2:η2-peroxo dicopper(II) oxy-intermediates in the coupled binuclear copper proteins remain elusive. Here, spectroscopic and computational methods reveal H-bonding interactions between active-site waters and the μ-η2:η2-peroxide of oxy-tyrosinase, and define their effects on the Cu(II)2O2 electronic structure and O2 activation.
Collapse
Affiliation(s)
- Ioannis Kipouros
- Department of Chemistry, Stanford University, Stanford, California 94305, USA.
| | - Agnieszka Stańczak
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 166 10, Praha 6, Czech Republic.
- Faculty of Science, Charles University, Albertov 2038/6, 128 00 Praha 2, Czech Republic
| | - Martin Culka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 166 10, Praha 6, Czech Republic.
| | - Erik Andris
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 166 10, Praha 6, Czech Republic.
| | | | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 166 10, Praha 6, Czech Republic.
| | - Edward I Solomon
- Department of Chemistry, Stanford University, Stanford, California 94305, USA.
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA
| |
Collapse
|
12
|
Lan Z, Toney J, Mallikarjun Sharada S. A computational mechanistic study of CH hydroxylation with mononuclear copper–oxygen complexes. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01128j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A computational study of methane hydroxylation by oxygen-bound monocopper complexes.
Collapse
Affiliation(s)
- Zhenzhuo Lan
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA
| | - Jacob Toney
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA
| | - Shaama Mallikarjun Sharada
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| |
Collapse
|
13
|
Lee I, Lee MS, Tao L, Ikuno T, Khare R, Jentys A, Huthwelker T, Borca CN, Kalinko A, Gutiérrez OY, Govind N, Fulton JL, Hu JZ, Glezakou VA, Rousseau R, Sanchez-Sanchez M, Lercher JA. Activity of Cu-Al-Oxo Extra-Framework Clusters for Selective Methane Oxidation on Cu-Exchanged Zeolites. JACS AU 2021; 1:1412-1421. [PMID: 34604851 PMCID: PMC8479761 DOI: 10.1021/jacsau.1c00196] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Indexed: 05/08/2023]
Abstract
Cu-zeolites are able to directly convert methane to methanol via a three-step process using O2 as oxidant. Among the different zeolite topologies, Cu-exchanged mordenite (MOR) shows the highest methanol yields, attributed to a preferential formation of active Cu-oxo species in its 8-MR pores. The presence of extra-framework or partially detached Al species entrained in the micropores of MOR leads to the formation of nearly homotopic redox active Cu-Al-oxo nanoclusters with the ability to activate CH4. Studies of the activity of these sites together with characterization by 27Al NMR and IR spectroscopy leads to the conclusion that the active species are located in the 8-MR side pockets of MOR, and it consists of two Cu ions and one Al linked by O. This Cu-Al-oxo cluster shows an activity per Cu in methane oxidation significantly higher than of any previously reported active Cu-oxo species. In order to determine unambiguously the structure of the active Cu-Al-oxo cluster, we combine experimental XANES of Cu K- and L-edges, Cu K-edge HERFD-XANES, and Cu K-edge EXAFS with TDDFT and AIMD-assisted simulations. Our results provide evidence of a [Cu2AlO3]2+ cluster exchanged on MOR Al pairs that is able to oxidize up to two methane molecules per cluster at ambient pressure.
Collapse
Affiliation(s)
- Insu Lee
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Mal-Soon Lee
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
- E-mail:
| | - Lei Tao
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Takaaki Ikuno
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Rachit Khare
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Andreas Jentys
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Thomas Huthwelker
- Swiss
Light Source, Laboratory for Synchrotron
Radiation and Femtochemistry (LSF), Forschungsstrasse 110 Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Camelia N. Borca
- Swiss
Light Source, Laboratory for Synchrotron
Radiation and Femtochemistry (LSF), Forschungsstrasse 110 Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | | | - Oliver Y. Gutiérrez
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Niri Govind
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99354, United States
| | - John L. Fulton
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Jian Zhi Hu
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Vassiliki-Alexandra Glezakou
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Roger Rousseau
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Maricruz Sanchez-Sanchez
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
- E-mail:
| | - Johannes A. Lercher
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
- E-mail:
| |
Collapse
|
14
|
Lan Z, Mallikarjun Sharada S. A framework for constructing linear free energy relationships to design molecular transition metal catalysts. Phys Chem Chem Phys 2021; 23:15543-15556. [PMID: 34254089 DOI: 10.1039/d1cp02278d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A computational framework for ligand-driven design of transition metal complexes is presented in this work. We propose a general procedure for the construction of active site-specific linear free energy relationships (LFERs), which are inspired from Hammett and Taft correlations in organic chemistry and grounded in the activation strain model (ASM). Ligand effects are isolated and quantified in terms of their contribution to interaction and strain energy components of ASM. Scalar descriptors that are easily obtainable are then employed to construct the complete LFER. We successfully demonstrate proof-of-concept by constructing and applying an LFER to CH activation with enzyme-inspired [Cu2O2]2+ complexes. The key benefit of using ASM is a built-in compensation or error cancellation between LFER prediction of interaction and strain terms, resulting in accurate barrier predictions for 37 of the 47 catalysts examined in this study. The LFER is also transferable with respect to level of theory and flexible towards the choice of reference system. The absence of interaction-strain compensation or poor model performance for the remaining systems is a consequence of the approximate nature of the chosen interaction energy descriptor and LFER construction of the strain term, which focuses largely on trends in substrate and not catalyst strain.
Collapse
Affiliation(s)
- Zhenzhuo Lan
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA.
| | - Shaama Mallikarjun Sharada
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA. and Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| |
Collapse
|
15
|
Besalú-Sala P, Magallón C, Costas M, Company A, Luis JM. Mechanistic Insights into the ortho-Defluorination-Hydroxylation of 2-Halophenolates Promoted by a Bis(μ-oxo)dicopper(III) Complex. Inorg Chem 2020; 59:17018-17027. [PMID: 33156988 DOI: 10.1021/acs.inorgchem.0c02246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
C-F bonds are one of the most inert functionalities. Nevertheless, some [Cu2O2]2+ species are able to defluorinate-hydroxylate ortho-fluorophenolates in a chemoselective manner over other ortho-halophenolates. Albeit it is known that such reactivity is promoted by an electrophilic attack of a [Cu2O2]2+ core over the arene ring, the crucial details of the mechanism that explain the chemo- and regioselectivity of the reaction remain unknown, and it has not being determined either if CuII2(η2:η2-O2) or CuIII2(μ-O)2 species are responsible for the initial attack on the arene. Herein, we present a combined theoretical and experimental mechanistic study to unravel the origin of the chemoselectivity of the ortho-defluorination-hydroxylation of 2-halophenolates by the [Cu2(O)2(DBED)2]2+ complex (DBED = N,N'-di-tert-butylethylenediamine). Our results show that the equilibria between (side-on)peroxo (P) and bis(μ-oxo) (O) isomers plays a key role in the mechanism, with the latter being the reactive species. Furthermore, on the basis of quantum-mechanical calculations, we were able to rationalize the chemoselective preference of the [Cu2(O)2(DBED)2]2+ catalyst for the C-F activation over C-Cl and C-H activations.
Collapse
Affiliation(s)
- Pau Besalú-Sala
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Carla Magallón
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Anna Company
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Josep M Luis
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| |
Collapse
|
16
|
Simonne DH, Martini A, Signorile M, Piovano A, Braglia L, Torelli P, Borfecchia E, Ricchiardi G. THORONDOR: a software for fast treatment and analysis of low-energy XAS data. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:1741-1752. [PMID: 33147203 DOI: 10.1107/s1600577520011388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
THORONDOR is a data treatment software with a graphical user interface (GUI) accessible via the browser-based Jupyter notebook framework. It aims to provide an interactive and user-friendly tool for the analysis of NEXAFS spectra collected during in situ experiments. The program allows on-the-fly representation and quick correction of large datasets from single or multiple experiments. In particular, it provides the possibility to align in energy several spectral profiles on the basis of user-defined references. Various techniques to calculate background subtraction and signal normalization have been made available. In this context, an innovation of this GUI involves the usage of a slider-based approach that provides the ability to instantly manipulate and visualize processed data for the user. Finally, the program is characterized by an advanced fitting toolbox based on the lmfit package. It offers a large selection of fitting routines as well as different peak distributions and empirical ionization potential step edges, which can be used for the fit of the NEXAFS rising-edge peaks. Statistical parameters describing the goodness of a fit such as χ2 or the R-factor together with the parameter uncertainty distributions and the related correlations can be extracted for each chosen model.
Collapse
Affiliation(s)
- David Horst Simonne
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| | - Andrea Martini
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| | - Matteo Signorile
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| | - Alessandro Piovano
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| | - Luca Braglia
- CNR-IOM, TASC Laboratory, SS 14 km 163.5, Trieste 34149, Italy
| | - Piero Torelli
- CNR-IOM, TASC Laboratory, SS 14 km 163.5, Trieste 34149, Italy
| | - Elisa Borfecchia
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| | - Gabriele Ricchiardi
- Department of Chemistry, INSTM Reference Center and NIS and CrisDi Interdepartmental Centers, University of Torino, Via P. Giuria 7, Torino 10125, Italy
| |
Collapse
|
17
|
Synthesis and Characterization of Catecholato Copper(II) Complexes with Sterically Hindered Neutral and Anionic N3 Type Ligands: Tris(3,5-diisopropyl-1-pyrazolyl)methane and Hydrotris(3,5-diisopropyl-1-pyrazolyl)borate. INORGANICS 2020. [DOI: 10.3390/inorganics8050037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three catecholato copper(II) complexes, [Cu(catCl4)(L1′)], [Cu(catBr4)(L1′)], and [Cu(catCl4)(L1H)], supported by sterically hindered neutral and anionic N3 type ligands: tris(3,5-diisopropyl-1-pyrazolyl)methane (referred to as L1′) and hydrotris(3,5-diisopropyl-1-pyrazolyl)borate (referred to as L1−), are synthesized and characterized in detail. Their X-ray structures reveal that both [Cu(catCl4)(L1′)] and [Cu(catBr4)(L1′)] complexes have a five-coordinate square-pyramidal geometry and [Cu(catCl4)(L1H)] complex has a four-coordinate square-planar geometry. The L1H is unusual protonated ligand that controls its overall charge. For the three catecholato copper(II) complexes, the oxidation state of copper is divalent, and catechol exists in catecholate as two minus anion. This difference in coordination geometry affects their d-d and CT transitions energy and ESR parameters.
Collapse
|
18
|
Liu YF, Shen J, Chen SL, Qiao W, Zhou S, Hong K. Theoretical study of aromatic hydroxylation of the [Cu 2(H-XYL)O 2] 2+ complex mediated by a side-on peroxo dicopper core and Cu-ligand effects. Dalton Trans 2019; 48:16882-16893. [PMID: 31621734 DOI: 10.1039/c9dt02814e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the aromatic hydroxylation mechanism of the [Cu2(H-XYL)O2]2+ complex mediated by a peroxo dicopper core and Cu-ligand effects are investigated by using hybrid density functional theory (DFT) and the broken symmetry B3LYP method. Based on the calculated free-energy profiles, we proposed two available mechanisms. The first reaction steps of both mechanisms involve concerted O-O bond cleavage and C-O bond formation and the second step involves the Wagner-Meerwein rearrangement of the substrate by a [1,2] H shift (HA shift from CA to CC) or (HA shift from CA to OA) across the phenyl ring to form stable dienone intermediates, and this is followed by the protonation of bridging oxygen atoms to produce the final hydroxylated dicopper(ii) product. The HA shift from CA to CC mechanism is the energetically most favorable, in which the first reaction step is the rate-limiting reaction, with a calculated free-energy barrier of 19.0 kcal mol-1 and a deuterium kinetic isotope effect of 1.0, in agreement with experimental observations. The calculation also shows that the reaction started from the P-type species of [Cu2(H-XYL)O2]2+ which is capable of mediating the direct hydroxylation of aromatic substrates without the intermediacy of an O-type species. Finally, we designed some new complexes with different Cu-ligands and found the complex that computationally possesses a higher activity in mediating the hydroxylation of the ligand based aromatic substrate; here, Cu loses a pyridyl ligand donor by dissociation, compared to the [Cu2(H-XYL)O2]2+ complex.
Collapse
Affiliation(s)
- Yan Fang Liu
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China. and Shandong Provincial Key Laboratory of Synthetic Biology, Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266061, China
| | - Junliang Shen
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Shi-Lu Chen
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Weiye Qiao
- Chemistry and Chemical Engineering College, University of Xingtai, Xingtai, Hebei 054001, China
| | - Suqin Zhou
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Kun Hong
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China.
| |
Collapse
|
19
|
DiMucci IM, Lukens JT, Chatterjee S, Carsch KM, Titus CJ, Lee SJ, Nordlund D, Betley TA, MacMillan SN, Lancaster KM. The Myth of d 8 Copper(III). J Am Chem Soc 2019; 141:18508-18520. [PMID: 31710466 PMCID: PMC7256958 DOI: 10.1021/jacs.9b09016] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Seventeen Cu complexes with formal oxidation states ranging from CuI to CuIII are investigated through the use of multiedge X-ray absorption spectroscopy (XAS) and density functional theory (DFT) calculations. Analysis reveals that the metal-ligand bonding in high-valent, formally CuIII species is extremely covalent, resulting in Cu K-edge and L2,3-edge spectra whose features have energies that complicate physical oxidation state assignment. Covalency analysis of the Cu L2,3-edge data reveals that all formally CuIII species have significantly diminished Cu d-character in their lowest unoccupied molecular orbitals (LUMOs). DFT calculations provide further validation of the orbital composition analysis, and excellent agreement is found between the calculated and experimental results. The finding that Cu has limited capacity to be oxidized necessitates localization of electron hole character on the supporting ligands; consequently, the physical d8 description for these formally CuIII species is inaccurate. This study provides an alternative explanation for the competence of formally CuIII species in transformations that are traditionally described as metal-centered, 2-electron CuI/CuIII redox processes.
Collapse
Affiliation(s)
- Ida M. DiMucci
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, 162 Sciences Drive, Ithaca, New York 14853, United States
| | - James T. Lukens
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, 162 Sciences Drive, Ithaca, New York 14853, United States
| | - Sudipta Chatterjee
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, 162 Sciences Drive, Ithaca, New York 14853, United States
| | - Kurtis M. Carsch
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Charles J. Titus
- Department of Physics, Stanford University, Stanford, California 94305, United States
| | - Sang Jun Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, 162 Sciences Drive, Ithaca, New York 14853, United States
| | - Kyle M. Lancaster
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, 162 Sciences Drive, Ithaca, New York 14853, United States
| |
Collapse
|
20
|
Maganas D, Kowalska JK, Nooijen M, DeBeer S, Neese F. Comparison of multireference ab initio wavefunction methodologies for X-ray absorption edges: A case study on [Fe(II/III)Cl4]2–/1– molecules. J Chem Phys 2019; 150:104106. [DOI: 10.1063/1.5051613] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Dimitrios Maganas
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Joanna K. Kowalska
- Max-Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Marcel Nooijen
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Serena DeBeer
- Max-Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Frank Neese
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| |
Collapse
|
21
|
Nitrogen hybridization controls peroxo-oxo equilibrium in ethylenediamine bound binuclear [Cu2O2] complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
22
|
Fujisawa K, Tobita K, Sakuma S, Savard D, Leznoff DB. Binuclear and mononuclear copper(II) chlorido complexes with hindered neutral N3 type ligands: Influence of ligand framework and charge on their structure and physicochemical properties. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
23
|
Trammell R, Rajabimoghadam K, Garcia-Bosch I. Copper-Promoted Functionalization of Organic Molecules: from Biologically Relevant Cu/O 2 Model Systems to Organometallic Transformations. Chem Rev 2019; 119:2954-3031. [PMID: 30698952 DOI: 10.1021/acs.chemrev.8b00368] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Copper is one of the most abundant and less toxic transition metals. Nature takes advantage of the bioavailability and rich redox chemistry of Cu to carry out oxygenase and oxidase organic transformations using O2 (or H2O2) as oxidant. Inspired by the reactivity of these Cu-dependent metalloenzymes, chemists have developed synthetic protocols to functionalize organic molecules under enviormentally benign conditions. Copper also promotes other transformations usually catalyzed by 4d and 5d transition metals (Pd, Pt, Rh, etc.) such as nitrene insertions or C-C and C-heteroatom coupling reactions. In this review, we summarized the most relevant research in which copper promotes or catalyzes the functionalization of organic molecules, including biological catalysis, bioinspired model systems, and organometallic reactivity. The reaction mechanisms by which these processes take place are discussed in detail.
Collapse
Affiliation(s)
- Rachel Trammell
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
| | | | - Isaac Garcia-Bosch
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
| |
Collapse
|
24
|
Lan Z, Sharada SM. Computational strategies to probe CH activation in dioxo-dicopper complexes. Phys Chem Chem Phys 2018; 20:25602-25614. [PMID: 30283932 DOI: 10.1039/c8cp05096a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We employ density functional theory and energy decomposition analysis to probe the mechanism of CH activation in dioxo-dicopper complexes. The electrophilicity of monodentate N-donor ligands coordinated to Cu is systematically varied to examine the response of barriers to the two proposed pathways - one-step oxo-insertion and two-step radical recombination. Electron-withdrawing ligand stabilize the oxo-insertion transition state via charge transfer interactions, and therefore lead to lower barriers. On the other hand, barriers to the CH activation step in the radical recombination mechanism exhibit almost no dependence on N-donor electrophilicity. Based on the similarities between calculated and experimental Hammett relationships, the oxo-insertion pathway appears to be the preferred mechanism of CH activation in dioxo-dicopper catalysts.
Collapse
Affiliation(s)
- Zhenzhuo Lan
- Mork Family Department of Chemical Engineering and Materials Science, 3651 Watt Way VHE516, University of Southern California, Los Angeles, CA 90089, USA.
| | | |
Collapse
|
25
|
What causes the different functionality in type-III-copper enzymes? A state of the art perspective. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.04.041] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
26
|
Kubas A, Verkamp M, Vura-Weis J, Neese F, Maganas D. Restricted Open-Shell Configuration Interaction Singles Study on M- and L-edge X-ray Absorption Spectroscopy of Solid Chemical Systems. J Chem Theory Comput 2018; 14:4320-4334. [DOI: 10.1021/acs.jctc.8b00302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Adam Kubas
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Max Verkamp
- Department of Chemistry, University of Illinois, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
| | - Josh Vura-Weis
- Department of Chemistry, University of Illinois, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
| | - Frank Neese
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Dimitrios Maganas
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| |
Collapse
|
27
|
Liu YF, Du L. Theoretical Study of the Oxidation of Methane to Methanol by the [CuIICuII(μ-O)2CuIII(7-N-Etppz)]1+ Complex. Inorg Chem 2018; 57:3261-3271. [DOI: 10.1021/acs.inorgchem.8b00054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Yan Fang Liu
- The Key Laboratory of Biobased Materials, The Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, People’s Republic of China
| | - Likai Du
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, 430070, People’s Republic of China
| |
Collapse
|
28
|
Papanikolaou MG, Hadjithoma S, Chatzikypraiou DS, Papaioannou D, Drouza C, Tsipis AC, Miras HN, Keramidas AD, Kabanos TA. Investigation of dioxygen activation by copper(ii)–iminate/aminate complexes. Dalton Trans 2018; 47:16242-16254. [DOI: 10.1039/c8dt03137a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
CuII amidate/iminate complexes activate dioxygen by a ligated to CuII, –HCN– moiety.
Collapse
Affiliation(s)
- Michael G. Papanikolaou
- Section of Inorganic and Analytical Chemistry
- Department of Chemistry
- University of Ioannina
- Ioannina 45110
- Greece
| | | | - Dimitra S. Chatzikypraiou
- Section of Inorganic and Analytical Chemistry
- Department of Chemistry
- University of Ioannina
- Ioannina 45110
- Greece
| | - Dionysios Papaioannou
- Laboratory of Synthetic Organic Chemistry
- Department of Chemistry
- University of Patras
- GR-26504 Patras
- Greece
| | - Chryssoula Drouza
- Department of Agricultural Sciences
- Biotechnology and Food Science
- Cyprus University of Technology
- Limassol 3036
- Cyprus
| | - Athanassios C. Tsipis
- Section of Inorganic and Analytical Chemistry
- Department of Chemistry
- University of Ioannina
- Ioannina 45110
- Greece
| | | | | | - Themistoklis A. Kabanos
- Section of Inorganic and Analytical Chemistry
- Department of Chemistry
- University of Ioannina
- Ioannina 45110
- Greece
| |
Collapse
|
29
|
Schaefer AW, Kieber-Emmons MT, Adam SM, Karlin KD, Solomon EI. Phenol-Induced O-O Bond Cleavage in a Low-Spin Heme-Peroxo-Copper Complex: Implications for O 2 Reduction in Heme-Copper Oxidases. J Am Chem Soc 2017; 139:7958-7973. [PMID: 28521498 PMCID: PMC5605297 DOI: 10.1021/jacs.7b03292] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This study evaluates the reaction of a biomimetic heme-peroxo-copper complex, {[(DCHIm)(F8)FeIII]-(O22-)-[CuII(AN)]}+ (1), with a phenolic substrate, involving a net H-atom abstraction to cleave the bridging peroxo O-O bond that produces FeIV═O, CuII-OH, and phenoxyl radical moieties, analogous to the chemistry carried out in heme-copper oxidases (HCOs). A 3D potential energy surface generated for this reaction reveals two possible reaction pathways: one involves nearly complete proton transfer (PT) from the phenol to the peroxo ligand before the barrier; the other involves O-O homolysis, where the phenol remains H-bonding to the peroxo OCu in the transition state (TS) and transfers the H+ after the barrier. In both mechanisms, electron transfer (ET) from phenol occurs after the PT (and after the barrier); therefore, only the interaction with the H+ is involved in lowering the O-O cleavage barrier. The relative barriers depend on covalency (which governs ET from Fe), and therefore vary with DFT functional. However, as these mechanisms differ by the amount of PT at the TS, kinetic isotope experiments were conducted to determine which mechanism is active. It is found that the phenolic proton exhibits a secondary kinetic isotope effect, consistent with the calculations for the H-bonded O-O homolysis mechanism. The consequences of these findings are discussed in relation to O-O cleavage in HCOs, supporting a model in which a peroxo intermediate serves as the active H+ acceptor, and both the H+ and e- required for O-O cleavage derive from the cross-linked Tyr residue present at the active site.
Collapse
Affiliation(s)
- Andrew W Schaefer
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Matthew T Kieber-Emmons
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
- Department of Chemistry, The University of Utah , Salt Lake City, Utah 84112, United States
| | - Suzanne M Adam
- Department of Chemistry, The Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Kenneth D Karlin
- Department of Chemistry, The Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Edward I Solomon
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| |
Collapse
|
30
|
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: 454] [Impact Index Per Article: 64.9] [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.
Collapse
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
| |
Collapse
|
31
|
A personal perspective on the discovery of dioxygen adducts of copper and iron by Nobumasa Kitajima. J Biol Inorg Chem 2017; 22:237-251. [DOI: 10.1007/s00775-016-1432-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 12/15/2016] [Indexed: 11/26/2022]
|
32
|
Sharninghausen LS, Sinha SB, Shopov DY, Choi B, Mercado BQ, Roy X, Balcells D, Brudvig GW, Crabtree RH. High Oxidation State Iridium Mono-μ-oxo Dimers Related to Water Oxidation Catalysis. J Am Chem Soc 2016; 138:15917-15926. [PMID: 27960326 DOI: 10.1021/jacs.6b07716] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The highly active iridium "blue solution" chemical and electrochemical water oxidation catalyst obtained from Cp*IrL(OH) precursors (L = 2-pyridyl-2-propanoate) has been difficult to characterize as no crystal structure can be obtained because of the multiplicity of geometrical isomers present. Other data suggest complete loss of the Cp* ligand and the formation of a LIr-O-IrL unit. We have now developed a route to a series of well-defined Ir(IV,IV) mono-μ-oxo dimers, containing the closely related L2Ir-O-IrL2 unit. Unlike the catalyst, these model compounds are separable by silica gel chromatography and readily form single crystals. We report three stereoisomers with the formula ClL2Ir-O-IrL2Cl, which are fully characterized, including by X-ray crystallography, and are compared to the "blue solution". To the best of our knowledge, these species represent the first examples of structurally characterized dinuclear μ-oxo Ir(IV,IV) compounds without metal-carbon bonds.
Collapse
Affiliation(s)
- Liam S Sharninghausen
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Shashi Bhushan Sinha
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Dimitar Y Shopov
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Bonnie Choi
- Department of Chemistry, Columbia University , New York, New York 10027, United States
| | - Brandon Q Mercado
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Xavier Roy
- Department of Chemistry, Columbia University , New York, New York 10027, United States
| | - David Balcells
- Centre of Excellence in Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo , N-0315 Oslo, Norway
| | - Gary W Brudvig
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Robert H Crabtree
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| |
Collapse
|
33
|
Rokob TA. Pathways for Arene Oxidation in Non-Heme Diiron Enzymes: Lessons from Computational Studies on Benzoyl Coenzyme A Epoxidase. J Am Chem Soc 2016; 138:14623-14638. [PMID: 27682344 DOI: 10.1021/jacs.6b06987] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxygenation of aromatic rings using O2 is catalyzed by several non-heme carboxylate-bridged diiron enzymes. In order to provide a general mechanistic description for these reactions, computational studies were carried out at the ONIOM(B3LYP/BP86/Amber) level on the non-heme diiron enzyme benzoyl coenzyme A epoxidase, BoxB. The calculations revealed four possible pathways for attacking the aromatic ring: (a) electrophilic (2e-) attack by a bis(μ-oxo)-diiron(IV) species (Q pathway); (b) electrophilic (2e-) attack via the σ* orbital of a μ-η2:η2-peroxo-diiron(III) intermediate (Pσ* pathway); (c) radical (1e-) attack via the π*-orbital of a superoxo-diiron(II,III) species (Pπ* pathway); (d) radical (1e-) attack of a partially quenched bis(μ-oxo)-diiron(IV) intermediate (Q' pathway). The results allowed earlier work of de Visser on olefin epoxidation by diiron complexes and QM-cluster studies of Liao and Siegbahn on BoxB to be put into a broader perspective. Parallels with epoxidation using organic peracids were also examined. Specifically for the BoxB enzyme, the Q pathway was found to be the most preferred, but the corresponding bis(μ-oxo)-diiron(IV) species is significantly destabilized and not expected to be directly observable. Epoxidation via the Pσ* pathway represents an energetically somewhat higher lying alternative; possible strategies for experimental discrimination are discussed. The selectivity toward epoxidation is shown to stem from a combination of inherent electronic properties of the thioacyl substituent and enzymatic constraints. Possible implications of the results for toluene monooxygenases are considered as well.
Collapse
Affiliation(s)
- Tibor András Rokob
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences , Magyar Tudósok körútja 2, 1117 Budapest, Hungary
| |
Collapse
|
34
|
Abstract
Oxygen intermediates in copper enzymes exhibit unique spectroscopic features that reflect novel geometric and electronic structures that are key to reactivity. This perspective will describe: (1) the bonding origin of the unique spectroscopic features of the coupled binuclear copper enzymes and how this overcomes the spin forbiddenness of O2 binding and activates monooxygenase activity, (2) how the difference in exchange coupling in the non-coupled binuclear Cu enzymes controls the reaction mechanism, and (3) how the trinuclear Cu cluster present in the multicopper oxidases leads to a major structure/function difference in enabling the irreversible reductive cleavage of the O-O bond with little overpotential and generating a fully oxidized intermediate, different from the resting enzyme studied by crystallography, that is key in enabling fast PCET in the reductive half of the catalytic cycle.
Collapse
|
35
|
Walroth RC, Lukens JT, MacMillan SN, Finkelstein KD, Lancaster KM. Spectroscopic Evidence for a 3d10 Ground State Electronic Configuration and Ligand Field Inversion in [Cu(CF3)4]1–. J Am Chem Soc 2016; 138:1922-31. [DOI: 10.1021/jacs.5b10819] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard C. Walroth
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - James T. Lukens
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Samantha N. MacMillan
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Kenneth D. Finkelstein
- Cornell
High Energy Synchrotron Source, Wilson Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Kyle M. Lancaster
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| |
Collapse
|
36
|
Karahalis GJ, Thangavel A, Chica B, Bacsa J, Dyer RB, Scarborough CC. Synthesis and Catalytic Reactivity of a Dicopper(II) μ-η2:η2-Peroxo Species Supported by 1,4,7-Tri-tert-butyl-1,4,7-triazacyclononane. Inorg Chem 2016; 55:1102-7. [DOI: 10.1021/acs.inorgchem.5b02205] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory J. Karahalis
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Arumugam Thangavel
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Bryant Chica
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - John Bacsa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - R. Brian Dyer
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | | |
Collapse
|
37
|
Askari MS, Esguerra KVN, Lumb JP, Ottenwaelder X. A Biomimetic Mechanism for the Copper-Catalyzed Aerobic Oxygenation of 4-tert-Butylphenol. Inorg Chem 2015; 54:8665-72. [PMID: 26302341 DOI: 10.1021/acs.inorgchem.5b01297] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Controlling product selectivity during the catalytic aerobic oxidation of phenols remains a significant challenge that hinders reaction development. This work provides a mechanistic picture of a Cu-catalyzed, aerobic functionalization of phenols that is selective for phenoxy-coupled ortho-quinones. We show that the immediate product of the reaction is a Cu(II)-semiquinone radical complex and reveal that ortho-oxygenation precedes oxidative coupling. This complex is the resting state of the Cu catalyst during turnover at room temperature. A mechanistic study of the formation of this complex at low temperatures demonstrates that the oxygenation pathway mimics the dinuclear Cu enzyme tyrosinase by involving a dinuclear side-on peroxodicopper(II) oxidant. Unlike the enzyme, however, the rate-limiting step of the ortho-oxygenation reaction is the self-assembly of the oxidant from Cu(I) and O2. We provide details for all steps in the cycle and demonstrate that turnover is contingent upon proton-transfer events that are mediated by a slight excess of ligand. Finally, our knowledge of the reaction mechanism can be leveraged to diversify the reaction outcome. Thus, uncoupled ortho-quinones are favored in polar, coordinating media, highlighting unusually high levels of chemoselectivity for a catalytic aerobic oxidation of a phenol.
Collapse
Affiliation(s)
- Mohammad S Askari
- Department of Chemistry and Biochemistry, Concordia University , Montreal, QC H4B 1R6, Canada
| | | | - Jean-Philip Lumb
- Department of Chemistry, McGill University , Montreal, QC H3A 0B8, Canada
| | - Xavier Ottenwaelder
- Department of Chemistry and Biochemistry, Concordia University , Montreal, QC H4B 1R6, Canada
| |
Collapse
|
38
|
Chen Z, Zhang J, Zhang S. Oxidative DNA cleavage promoted by two phenolate-bridged binuclear copper(ii) complexes. NEW J CHEM 2015. [DOI: 10.1039/c4nj01623h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Both the binuclear copper complexes 1 and 2 could efficiently cleave the supercoiled pUC19 plasmid DNA into its nicked and linear forms in the presence of excessive ascorbic acid (Vc) under nearly physiological conditions. The DNA binding ability and the DNA cleavage efficacy of 1 are superior to 2.
Collapse
Affiliation(s)
- Zhanfen Chen
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology
- College of Chemistry & Chemical Engineering
- Hubei Normal University
- Huangshi 435002
| | - Jian Zhang
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology
- College of Chemistry & Chemical Engineering
- Hubei Normal University
- Huangshi 435002
| | - Shuping Zhang
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology
- College of Chemistry & Chemical Engineering
- Hubei Normal University
- Huangshi 435002
| |
Collapse
|
39
|
Abstract
In order to address how diverse metalloprotein active sites, in particular those containing iron and copper, guide O₂binding and activation processes to perform diverse functions, studies of synthetic models of the active sites have been performed. These studies have led to deep, fundamental chemical insights into how O₂coordinates to mono- and multinuclear Fe and Cu centers and is reduced to superoxo, peroxo, hydroperoxo, and, after O-O bond scission, oxo species relevant to proposed intermediates in catalysis. Recent advances in understanding the various factors that influence the course of O₂activation by Fe and Cu complexes are surveyed, with an emphasis on evaluating the structure, bonding, and reactivity of intermediates involved. The discussion is guided by an overarching mechanistic paradigm, with differences in detail due to the involvement of disparate metal ions, nuclearities, geometries, and supporting ligands providing a rich tapestry of reaction pathways by which O₂is activated at Fe and Cu sites.
Collapse
|
40
|
Alayon EMC, Nachtegaal M, Bodi A, Ranocchiari M, van Bokhoven JA. Bis(μ-oxo) versus mono(μ-oxo)dicopper cores in a zeolite for converting methane to methanol: an in situ XAS and DFT investigation. Phys Chem Chem Phys 2015; 17:7681-93. [DOI: 10.1039/c4cp03226h] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The zeolite framework stabilizes the mono(μ-oxo)dicopper core, which is the active species in methane to methanol conversion.
Collapse
Affiliation(s)
| | | | - Andras Bodi
- Paul Scherrer Institute
- Villigen
- CH-5232 Switzerland
| | | | | |
Collapse
|
41
|
Liu LL, Wu Y, Wang Z, Zhu J, Zhao Y. Mechanistic Insight into the Copper-Catalyzed Phosphorylation of Terminal Alkynes: A Combined Theoretical and Experimental Study. J Org Chem 2014; 79:6816-22. [DOI: 10.1021/jo5007174] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Liu Leo Liu
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0343, United States
| | - Yile Wu
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Zeshu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufen Zhao
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| |
Collapse
|
42
|
Kieber-Emmons MT, Ginsbach JW, Wick PK, Lucas HR, Helton ME, Lucchese B, Suzuki M, Zuberbühler A, Karlin KD, Solomon EI. Observation of a Cu(II)(2) (μ-1,2-peroxo)/Cu(III)(2) (μ-oxo)(2) equilibrium and its implications for copper-dioxygen reactivity. Angew Chem Int Ed Engl 2014; 53:4935-9. [PMID: 24700427 PMCID: PMC4041702 DOI: 10.1002/anie.201402166] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 11/10/2022]
Abstract
Synthesis of small-molecule Cu2 O2 adducts has provided insight into the related biological systems and their reactivity patterns including the interconversion of the Cu(II) 2 (μ-η(2) :η(2) -peroxo) and Cu(III) 2 (μ-oxo)2 isomers. In this study, absorption spectroscopy, kinetics, and resonance Raman data show that the oxygenated product of [(BQPA)Cu(I) ](+) initially yields an "end-on peroxo" species, that subsequently converts to the thermodynamically more stable "bis-μ-oxo" isomer (Keq =3.2 at -90 °C). Calibration of density functional theory calculations to these experimental data suggest that the electrophilic reactivity previously ascribed to end-on peroxo species is in fact a result of an accessible bis-μ-oxo isomer, an electrophilic Cu2 O2 isomer in contrast to the nucleophilic reactivity of binuclear Cu(II) end-on peroxo species. This study is the first report of the interconversion of an end-on peroxo to bis-μ-oxo species in transition metal-dioxygen chemistry.
Collapse
Affiliation(s)
| | - Jake W. Ginsbach
- Department of Chemistry, Stanford University, Stanford, CA 94305 USA, Fax: (+1) 650-725-0259
| | - Patrick K. Wick
- Department of Chemistry, University of Basel, 4056, Basel, Switzerland
| | - Heather R. Lucas
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218 USA, Fax: (+1) 410-516-7044
| | - Matthew E. Helton
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218 USA, Fax: (+1) 410-516-7044
| | - Baldo Lucchese
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218 USA, Fax: (+1) 410-516-7044
| | - Masatatsu Suzuki
- Division of Material Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | | | - Kenneth D. Karlin
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218 USA, Fax: (+1) 410-516-7044
| | - Edward I. Solomon
- Department of Chemistry, Stanford University, Stanford, CA 94305 USA, Fax: (+1) 650-725-0259
| |
Collapse
|
43
|
Solomon EI, Heppner DE, Johnston EM, Ginsbach JW, Cirera J, Qayyum M, Kieber-Emmons MT, Kjaergaard CH, Hadt RG, Tian L. Copper active sites in biology. Chem Rev 2014; 114:3659-853. [PMID: 24588098 PMCID: PMC4040215 DOI: 10.1021/cr400327t] [Citation(s) in RCA: 1147] [Impact Index Per Article: 114.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | - David E. Heppner
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| | | | - Jake W. Ginsbach
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| | - Jordi Cirera
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| | - Munzarin Qayyum
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| | | | | | - Ryan G. Hadt
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| | - Li Tian
- Department of Chemistry, Stanford University, Stanford, CA, 94305
| |
Collapse
|
44
|
Kieber-Emmons MT, Ginsbach JW, Wick PK, Lucas HR, Helton ME, Lucchese B, Suzuki M, Zuberbühler AD, Karlin KD, Solomon EI. Observation of a CuII2(μ-1,2-peroxo)/CuIII2(μ-oxo)2Equilibrium and its Implications for Copper-Dioxygen Reactivity. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402166] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|