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Burgmayer SJN, Kirk ML. Advancing Our Understanding of Pyranopterin-Dithiolene Contributions to Moco Enzyme Catalysis. Molecules 2023; 28:7456. [PMID: 38005178 PMCID: PMC10673323 DOI: 10.3390/molecules28227456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
The pyranopterin dithiolene ligand is remarkable in terms of its geometric and electronic structure and is uniquely found in mononuclear molybdenum and tungsten enzymes. The pyranopterin dithiolene is found coordinated to the metal ion, deeply buried within the protein, and non-covalently attached to the protein via an extensive hydrogen bonding network that is enzyme-specific. However, the function of pyranopterin dithiolene in enzymatic catalysis has been difficult to determine. This focused account aims to provide an overview of what has been learned from the study of pyranopterin dithiolene model complexes of molybdenum and how these results relate to the enzyme systems. This work begins with a summary of what is known about the pyranopterin dithiolene ligand in the enzymes. We then introduce the development of inorganic small molecule complexes that model aspects of a coordinated pyranopterin dithiolene and discuss the results of detailed physical studies of the models by electronic absorption, resonance Raman, X-ray absorption and NMR spectroscopies, cyclic voltammetry, X-ray crystallography, and chemical reactivity.
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Affiliation(s)
| | - Martin L. Kirk
- Department of Chemistry and Chemical Biology, The University of New Mexico, Albuquerque, NM 87131, USA
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2
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Formate Dehydrogenase Mimics as Catalysts for Carbon Dioxide Reduction. Molecules 2022; 27:molecules27185989. [PMID: 36144724 PMCID: PMC9506188 DOI: 10.3390/molecules27185989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/06/2022] [Accepted: 09/11/2022] [Indexed: 11/18/2022] Open
Abstract
Formate dehydrogenases (FDH) reversibly catalyze the interconversion of CO2 to formate. They belong to the family of molybdenum and tungsten-dependent oxidoreductases. For several decades, scientists have been synthesizing structural and functional model complexes inspired by these enzymes. These studies not only allow for finding certain efficient catalysts but also in some cases to better understand the functioning of the enzymes. However, FDH models for catalytic CO2 reduction are less studied compared to the oxygen atom transfer (OAT) reaction. Herein, we present recent results of structural and functional models of FDH.
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3
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Gates C, Varnum H, Getty C, Loui N, Chen J, Kirk ML, Yang J, Nieter Burgmayer SJ. Protonation and Non-Innocent Ligand Behavior in Pyranopterin Dithiolene Molybdenum Complexes. Inorg Chem 2022; 61:13728-13742. [PMID: 36000991 PMCID: PMC10544801 DOI: 10.1021/acs.inorgchem.2c01234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The complex [TEA][Tp*MoIV(O)(S2BMOPP)] (1) [TEA = tetraethylammonium, Tp* = tris(3,5-dimethylpyrazolyl)hydroborate, and BMOPP = 6-(3-butynyl-2-methyl-2-ol)-2-pivaloyl pterin] is a structural analogue of the molybdenum cofactor common to all pyranopterin molybdenum enzymes because it possesses a pyranopterin-ene-1,2-dithiolate ligand (S2BMOPP) that exists primarily in the ring-closed pyrano structure as a resonance hybrid of ene-dithiolate and thione-thiolate forms. Compound 1, the protonated [Tp*MoIV(O)(S2BMOPP-H)] (1-H) and one-electron-oxidized [Tp*MoV(O)(S2BMOPP)] [1-Mo(5+)] species have been studied using a combination of electrochemistry, electronic absorption, and electron paramagnetic resonance (EPR) spectroscopy. Additional insight into the nature of these molecules has been derived from electronic structure computations. Differences in dithiolene C-S bond lengths correlate with relative contributions from both ene-dithiolate and thione-thiolate resonance structures. Upon protonation of 1 to form 1-H, large spectroscopic changes are observed with transitions assigned as Mo(xy) → pyranopterin metal-to-ligand charge transfer and dithiolene → pyranopterin intraligand charge transfer, respectively, and this underscores a dramatic change in electronic structure between 1 and 1-H. The changes in electronic structure that occur upon protonation of 1 are also reflected in a large >300 mV increase in the Mo(V/IV) redox potential for 1-H, resulting from the greater thione-thiolate resonance contribution and decreased charge donation that stabilize the Mo(IV) state in 1-H with respect to one-electron oxidation. EPR spin Hamiltonian parameters for one-electron-oxidized 1-Mo(5+) and uncyclized [Tp*MoV(O)(S2BDMPP)] [3-Mo(5+)] [BDMPP = 6-(3-butynyl-2,2-dimethyl)-2-pivaloyl pterin] are very similar to each other and to those of [Tp*MoVO(bdt)] (bdt = 1,2-ene-dithiolate). This indicates that the dithiolate form of the ligand dominates at the Mo(V) level, consistent with the demand for greater S → Mo charge donation and a corresponding increase in Mo-S covalency as the oxidation state of the metal is increased. Protonation of 1 represents a simple reaction that models how the transfer of a proton from neighboring acidic amino acid residues to the Mo cofactor at a nitrogen atom within the pyranopterin dithiolene (PDT) ligand in pyranopterin molybdenum enzymes can impact the electronic structure of the Mo-PDT unit. This work also illustrates how pyran ring-chain tautomerization drives changes in resonance contributions to the dithiolene chelate and may adjust the reduction potential of the Mo ion.
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Affiliation(s)
- Cassandra Gates
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Haley Varnum
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Catherine Getty
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Natalie Loui
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Ju Chen
- Department of Chemistry and Chemical Biology, The University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Martin L Kirk
- Department of Chemistry and Chemical Biology, The University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Jing Yang
- Department of Chemistry and Chemical Biology, The University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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4
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Pätsch S, Correia JV, Elvers BJ, Steuer M, Schulzke C. Inspired by Nature-Functional Analogues of Molybdenum and Tungsten-Dependent Oxidoreductases. Molecules 2022; 27:molecules27123695. [PMID: 35744820 PMCID: PMC9227248 DOI: 10.3390/molecules27123695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 11/18/2022] Open
Abstract
Throughout the previous ten years many scientists took inspiration from natural molybdenum and tungsten-dependent oxidoreductases to build functional active site analogues. These studies not only led to an ever more detailed mechanistic understanding of the biological template, but also paved the way to atypical selectivity and activity, such as catalytic hydrogen evolution. This review is aimed at representing the last decade’s progress in the research of and with molybdenum and tungsten functional model compounds. The portrayed systems, organized according to their ability to facilitate typical and artificial enzyme reactions, comprise complexes with non-innocent dithiolene ligands, resembling molybdopterin, as well as entirely non-natural nitrogen, oxygen, and/or sulfur bearing chelating donor ligands. All model compounds receive individual attention, highlighting the specific novelty that each provides for our understanding of the enzymatic mechanisms, such as oxygen atom transfer and proton-coupled electron transfer, or that each presents for exploiting new and useful catalytic capability. Overall, a shift in the application of these model compounds towards uncommon reactions is noted, the latter are comprehensively discussed.
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Rajeshwaree B, Ali A, Mir AQ, Grover J, Lahiri GK, Dutta A, Maiti D. Group 6 transition metal-based molecular complexes for sustainable catalytic CO2 activation. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01378e] [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
CO2 activation is one of the key steps towards CO2 mitigation. In this context, the group 6 transition metal-based molecular catalysts can lead the way.
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Affiliation(s)
- B. Rajeshwaree
- Chemistry Department, IIT Bombay, Powai, Mumbai-400076, India
| | - Afsar Ali
- Chemistry Discipline, IIT Gandhinagar, Palaj, Gandhinagar-382355, India
| | - Ab Qayoom Mir
- Chemistry Discipline, IIT Gandhinagar, Palaj, Gandhinagar-382355, India
| | - Jagrit Grover
- Chemistry Department, IIT Bombay, Powai, Mumbai-400076, India
| | | | - Arnab Dutta
- Chemistry Department, IIT Bombay, Powai, Mumbai-400076, India
- Interdisciplinary Programme in Climate Studies, IIT Bombay, Powai, Mumbai-400076, India
| | - Debabrata Maiti
- Chemistry Department, IIT Bombay, Powai, Mumbai-400076, India
- Interdisciplinary Programme in Climate Studies, IIT Bombay, Powai, Mumbai-400076, India
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6
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Li Y, Gomez-Mingot M, Fogeron T, Fontecave M. Carbon Dioxide Reduction: A Bioinspired Catalysis Approach. Acc Chem Res 2021; 54:4250-4261. [PMID: 34761916 DOI: 10.1021/acs.accounts.1c00461] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
While developed in a number of directions, bioinspired catalysis has been explored only very recently for CO2 reduction, a challenging reaction of prime importance in the context of the energetic transition to be built up. This approach is particularly relevant because nature teaches us that CO2 reduction is possible, with low overpotentials, high rates, and large selectivity, and gives us unique clues to design and discover new interesting molecular catalysts. Indeed, on the basis of our relatively advanced understanding of the structures and mechanisms of the active sites of fascinating metalloenzymes such as formate dehydrogenases (FDHs) and CO dehydrogenases (CODHs), it is possible to design original, active, selective, and stable molecular catalysts using the bioinspired approach. These metalloenzymes use fascinating metal centers: in FDHs, a Mo(W) mononuclear ion is coordinated by four sulfur atoms provided by a specific organic ligand, molybdopterin (MPT), containing a pyranopterin heterocycle (composed of a pyran ring fused with a pterin unit) and two sulfhydryl groups for metal chelation; in CODHs, catalytic activity depends on either a unique nickel-iron-sulfur cluster or a dinuclear Mo-Cu complex in which the Mo ion is chelated by an MPT ligand. As a consequence, the novel class of catalysts, designed by bioinspiration, consists of mononuclear Mo, W, and Ni and as well as dinuclear Mo-Cu and Ni-Fe complexes in which the metal ions are coordinated by sulfur ligands, more specifically, dithiolene chelates mimicking the natural MPT cofactor. In general, their activity is evaluated in electrochemical systems (cyclic voltammetry and bulk electrolysis) or in photochemical systems (in the presence of a photosensitizer and a sacrificial electron donor) in solution. This research is multidisciplinary because it implies detailed biochemical, functional, and structural characterization of the inspiring enzymes together with synthetic organic and organometallic chemistry and molecular catalysis studies. The most important achievements in this direction, starting from the first report of a catalytically active biomimetic bis-dithiolene-Mo complex in 2015, are discussed in this Account, highlighting the challenging issues associated with synthesis of such sophisticated ligands and molecular catalysts as well as the complexity of reaction mechanisms. While the very first active biomimetic catalysts require further improvement, in terms of performance, they set the stage in which molecular chemistry and enzymology can synergistically cooperate for a better understanding of why nature has selected these sites and for developing highly active catalysts.
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Affiliation(s)
- Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
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7
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Mouchfiq A, Todorova TK, Dey S, Fontecave M, Mougel V. A bioinspired molybdenum-copper molecular catalyst for CO 2 electroreduction. Chem Sci 2020; 11:5503-5510. [PMID: 32874493 PMCID: PMC7448372 DOI: 10.1039/d0sc01045f] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/08/2020] [Indexed: 11/21/2022] Open
Abstract
A bimetallic Mo–Cu complex inspired by the active site of the carbon monoxide dehydrogenase enzyme mediates the electroreduction of carbon dioxide to formic acid.
Non-noble metal molecular catalysts mediating the electrocatalytic reduction of carbon dioxide are still scarce. This work reports the electrochemical reduction of CO2 to formate catalyzed by the bimetallic complex [(bdt)MoVI(O)S2CuICN]2– (bdt = benzenedithiolate), a mimic of the active site of the Mo–Cu carbon monoxide dehydrogenase enzyme (CODH2). Infrared spectroelectrochemical (IR-SEC) studies coupled with density functional theory (DFT) computations revealed that the complex is only a pre-catalyst, the active catalyst being generated upon reduction in the presence of CO2. We found that the two-electron reduction of [(bdt)MoVI(O)S2CuICN]2– triggers the transfer of the oxo moiety to CO2 forming CO32– and the complex [(bdt)MoIVS2CuICN]2– and that a further one-electron reduction is needed to generate the active catalyst. Its protonation yields a reactive MoVH hydride intermediate which reacts with CO2 to produce formate. These findings are particularly relevant to the design of catalysts from metal oxo precursors.
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Affiliation(s)
- Ahmed Mouchfiq
- Laboratoire de Chimie des Processus Biologiques , UMR 8229 CNRS , Collège de France , Sorbonne Universitè , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05 , France .
| | - Tanya K Todorova
- Laboratoire de Chimie des Processus Biologiques , UMR 8229 CNRS , Collège de France , Sorbonne Universitè , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05 , France .
| | - Subal Dey
- Laboratoire de Chimie des Processus Biologiques , UMR 8229 CNRS , Collège de France , Sorbonne Universitè , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05 , France . .,Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , CH-8093 Zürich , Switzerland .
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques , UMR 8229 CNRS , Collège de France , Sorbonne Universitè , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05 , France .
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , CH-8093 Zürich , Switzerland .
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8
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Fogeron T, Retailleau P, Chamoreau L, Li Y, Fontecave M. Pyranopterin Related Dithiolene Molybdenum Complexes as Homogeneous Catalysts for CO
2
Photoreduction. Angew Chem Int Ed Engl 2018; 57:17033-17037. [DOI: 10.1002/anie.201809084] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/19/2018] [Indexed: 01/14/2023]
Affiliation(s)
- Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Saclay 1, av.de la Terrasse 91198 Gif-sur-Yvette France
| | - Lise‐Marie Chamoreau
- Sorbonne Universités Université Paris Sorbonne Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS 4 place Jussieu 75252 Paris Cedex 5 France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
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9
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Fogeron T, Retailleau P, Chamoreau L, Li Y, Fontecave M. Pyranopterin Related Dithiolene Molybdenum Complexes as Homogeneous Catalysts for CO
2
Photoreduction. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Saclay 1, av.de la Terrasse 91198 Gif-sur-Yvette France
| | - Lise‐Marie Chamoreau
- Sorbonne Universités Université Paris Sorbonne Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS 4 place Jussieu 75252 Paris Cedex 5 France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS Collège de France, Université Paris Sorbonne 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
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10
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Fogeron T, Todorova TK, Porcher JP, Gomez-Mingot M, Chamoreau LM, Mellot-Draznieks C, Li Y, Fontecave M. A Bioinspired Nickel(bis-dithiolene) Complex as a Homogeneous Catalyst for Carbon Dioxide Electroreduction. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03383] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thibault Fogeron
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Tanya K. Todorova
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Jean-Philippe Porcher
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Maria Gomez-Mingot
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Lise-Marie Chamoreau
- Institut
Parisien de Chimie Moléculaire, UMR 8232 CNRS, Sorbonne Universités, UPMC Université Paris, 4 place Jussieu, 75252 Paris Cedex 5, France
| | - Caroline Mellot-Draznieks
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Yun Li
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Marc Fontecave
- Laboratoire
de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
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Fogeron T, Retailleau P, Chamoreau LM, Fontecave M, Li Y. The unusual ring scission of a quinoxaline-pyran-fused dithiolene system related to molybdopterin. Dalton Trans 2017; 46:4161-4164. [DOI: 10.1039/c7dt00377c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of a bioinspired dithiolene system in acidic medium led to an unprecedented cleavage of the C–O bond in the pyran ring.
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Affiliation(s)
- Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- 75231 Paris Cedex 05
- France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
- France
| | - Lise-Marie Chamoreau
- Sorbonne Universités
- UPMC Université Paris 6
- Institut Parisien de Chimie Moléculaire
- UMR 8232 CNRS
- 75252 Paris Cedex 5
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- 75231 Paris Cedex 05
- France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- 75231 Paris Cedex 05
- France
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12
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Deiana C, Carla Aragoni M, Isaia F, Lippolis V, Pintus A, Slawin AMZ, Derek Woollins J, Arca M. Structural tailoring of the NIR-absorption of bis(1,2-dichalcogenolene) Ni/Pt electrochromophores deriving from 1,3-dimethyl-2-chalcogenoxo-imidazoline-4,5-dichalcogenolates. NEW J CHEM 2016. [DOI: 10.1039/c6nj01854h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(1,2-dithiolene) and (1,2-diselenolene) Ni and Pt complexes with 2-chalcogenoxo-imidazoline-4,5-dichalcogenolates show intense NIR electrochromism tunable by structural modifications.
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Affiliation(s)
- Carlo Deiana
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Anna Pintus
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | | | | | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
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13
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Fogeron T, Porcher JP, Gomez-Mingot M, Todorova TK, Chamoreau LM, Mellot-Draznieks C, Li Y, Fontecave M. A cobalt complex with a bioinspired molybdopterin-like ligand: a catalyst for hydrogen evolution. Dalton Trans 2016; 45:14754-63. [DOI: 10.1039/c6dt01824f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A cobalt complex using a bioinspired ligand, that mimics the molybdopterin cofactor, displays very good activity for electrochemical proton reduction in terms of turnover frequency, faradic yields and stability.
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Affiliation(s)
- Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Jean-Philippe Porcher
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Tanya K. Todorova
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Lise-Marie Chamoreau
- Sorbonne Universités
- UPMC Université Paris 6
- Institut Parisien de Chimie Moléculaire
- UMR 8232 CNRS
- 75252 Paris Cedex 5
| | - Caroline Mellot-Draznieks
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques
- UMR 8229 CNRS
- Collège de France
- Université Paris 6
- 75231 Paris Cedex 05
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