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Khurshid A, Tanveer T, Hafeez K, Ahmed M, Akhtar Z, Zafar MN. Palladium-anchored donor-flexible pyridylidene amide (PYA) electrocatalysts for CO 2 reduction. RSC Adv 2023; 13:34817-34825. [PMID: 38035229 PMCID: PMC10686039 DOI: 10.1039/d3ra06477h] [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: 09/22/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023] Open
Abstract
The conversion of CO2 into CO as a substitute for processing fossil fuels to produce hydrocarbons is a sustainable, carbon neutral energy technology. However, the electrochemical reduction of CO2 into a synthesis gas (CO and H2) at a commercial scale requires an efficient electrocatalyst. In this perspective, a series of six new palladium complexes with the general formula [Pd(L)(Y)]Y, where L is a donor-flexible PYA, N2,N6-bis(1-ethylpyridin-4(1H)-ylidene)pyridine-2,6-dicarboxamide, N2,N6-bis(1-butylpyridin-4(1H)-ylidene)pyridine-2,6-dicarboxamide, or N2,N6-bis(1-benzylpyridin-4(1H)-ylidene)pyridine-2,6-dicarboxamide, and Y = OAc or Cl-, were utilized as active electrocatalysts for the conversion of CO2 into a synthesis gas. These palladium(ii) pincer complexes were synthesized from their respective H-PYA proligands using 1,8-diazobicyclo[5.4.0]undec-7-ene (DBU) or sodium acetate as a base. All the compounds were successfully characterized by various physical methods of analysis, such as proton and carbon NMR, FTIR, CHN, and single-crystal XRD. The redox chemistry of palladium complexes toward carbon dioxide activation suggested an evident CO2 interaction with each Pd(ii) catalyst. [Pd(N2,N6-bis(1-ethylpyridin-4(1H)-ylidene)pyridine-2,6-dicarboxamide)(Cl)]Cl showed the best electrocatalytic activity for CO2 reduction into a synthesis gas under the acidic condition of trifluoracetic acid (TFA) with a minimum overpotential of 0.40 V, a maximum turnover frequency (TOF) of 101 s-1, and 58% FE of CO. This pincer scaffold could be stereochemically tuned with the exploration of earth abundant first row transition metals for further improvements in the CO2 reduction chemistry.
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Affiliation(s)
- Afshan Khurshid
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Tania Tanveer
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Komal Hafeez
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Maqsood Ahmed
- Materials Chemistry Laboratory, Department of Chemistry, The Islamia University of Bahawalpur 63100 Pakistan
| | - Zareen Akhtar
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - M Naveed Zafar
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
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Mechanistic insights into the electroreduction of CO2 by a phosphine-nitrogen-coordinated manganese carbonyl complex for CO2-to-CO conversion over H2 formation. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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3
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Florian J, Cole JM. Analyzing Structure-Activity Variations for Mn-Carbonyl Complexes in the Reduction of CO 2 to CO. Inorg Chem 2023; 62:318-335. [PMID: 36541860 PMCID: PMC9832541 DOI: 10.1021/acs.inorgchem.2c03391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Contemporary electrocatalysts for the reduction of CO2 often suffer from low stability, activity, and selectivity, or a combination thereof. Mn-carbonyl complexes represent a promising class of molecular electrocatalysts for the reduction of CO2 to CO as they are able to promote this reaction at relatively mild overpotentials, whereby rare-earth metals are not required. The electronic and geometric structure of the reaction center of these molecular electrocatalysts is precisely known and can be tuned via ligand modifications. However, ligand characteristics that are required to achieve high catalytic turnover at minimal overpotential remain unclear. We consider 55 Mn-carbonyl complexes, which have previously been synthesized and characterized experimentally. Four intermediates were identified that are common across all catalytic mechanisms proposed for Mn-carbonyl complexes, and their structures were used to calculate descriptors for each of the 55 Mn-carbonyl complexes. These electronic-structure-based descriptors encompass the binding energies, the highest occupied and lowest unoccupied molecular orbitals, and partial charges. Trends in turnover frequency and overpotential with these descriptors were analyzed to afford meaningful physical insights into what ligand characteristics lead to good catalytic performance, and how this is affected by the reaction conditions. These insights can be expected to significantly contribute to the rational design of more active Mn-carbonyl electrocatalysts.
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Affiliation(s)
- Jacob Florian
- Cavendish
Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Jacqueline M. Cole
- Cavendish
Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.,ISIS
Neutron and Muon Source, STFC Rutherford
Appleton Laboratory, Harwell Campus for Science and Innovation, Didcot OX11 0QX, U.K.,
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4
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Highly active electrocatalytic CO2 reduction with manganese N-heterocyclic carbene pincer by para electronic tuning. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Kinzel NW, Demirbas D, Bill E, Weyhermüller T, Werlé C, Kaeffer N, Leitner W. Systematic Variation of 3d Metal Centers in a Redox-Innocent Ligand Environment: Structures, Electrochemical Properties, and Carbon Dioxide Activation. Inorg Chem 2021; 60:19062-19078. [PMID: 34851088 PMCID: PMC8693193 DOI: 10.1021/acs.inorgchem.1c02909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Coordination compounds
of earth-abundant 3d transition metals are
among the most effective catalysts for the electrochemical reduction
of carbon dioxide (CO2). While the properties of the metal
center are crucial for the ability of the complexes to electrochemically
activate CO2, systematic variations of the metal within
an identical, redox-innocent ligand backbone remain insufficiently
investigated. Here, we report on the synthesis, structural and spectroscopic
characterization, and electrochemical investigation of a series of
3d transition-metal complexes [M = Mn(I), Fe(II), Co(II), Ni(II),
Cu(I), and Zn(II)] coordinated by a new redox-innocent PNP pincer
ligand system. Only the Fe, Co, and Ni complexes reveal distinct metal-centered
electrochemical reductions from M(II) down to M(0) and show indications
for interaction with CO2 in their reduced states. The Ni(0)
d10 species associates with CO2 to form a putative
Aresta-type Ni-η2-CO2 complex, where electron
transfer to CO2 through back-bonding is insufficient to
enable electrocatalytic activity. By contrast, the Co(0) d9 intermediate binding CO2 can undergo additional electron
uptake into a formal cobalt(I) metallacarboxylate complex able to
promote turnover. Our data, together with the few literature precedents,
single out that an unsaturated coordination sphere (coordination number
= 4 or 5) and a d7-to-d9 configuration in the
reduced low oxidation state (+I or 0) are characteristics that foster
electrochemical CO2 activation for complexes based on redox-innocent
ligands. A series of 3d transition-metal complexes
(M = Mn, Fe, Co,
Ni, Cu, and Zn) coordinated by a new redox-innocent PNP pincer ligand
system were synthesized and structurally as well as electrochemically
analyzed to illuminate the role of the metal center in molecular electrochemical
carbon dioxide (CO2) activation.
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Affiliation(s)
- Niklas W Kinzel
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.,Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringer Weg 2, 52074 Aachen, Germany
| | - Derya Demirbas
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Eckhard Bill
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.,Ruhr University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Nicolas Kaeffer
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.,Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringer Weg 2, 52074 Aachen, Germany
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Kinzel NW, Werlé C, Leitner W. Transition Metal Complexes as Catalysts for the Electroconversion of CO 2 : An Organometallic Perspective. Angew Chem Int Ed Engl 2021; 60:11628-11686. [PMID: 33464678 PMCID: PMC8248444 DOI: 10.1002/anie.202006988] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/11/2020] [Indexed: 12/17/2022]
Abstract
The electrocatalytic transformation of carbon dioxide has been a topic of interest in the field of CO2 utilization for a long time. Recently, the area has seen increasing dynamics as an alternative strategy to catalytic hydrogenation for CO2 reduction. While many studies focus on the direct electron transfer to the CO2 molecule at the electrode material, molecular transition metal complexes in solution offer the possibility to act as catalysts for the electron transfer. C1 compounds such as carbon monoxide, formate, and methanol are often targeted as the main products, but more elaborate transformations are also possible within the coordination sphere of the metal center. This perspective article will cover selected examples to illustrate and categorize the currently favored mechanisms for the electrochemically induced transformation of CO2 promoted by homogeneous transition metal complexes. The insights will be corroborated with the concepts and elementary steps of organometallic catalysis to derive potential strategies to broaden the molecular diversity of possible products.
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Affiliation(s)
- Niklas W. Kinzel
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Institut für Technische und Makromolekulare Chemie (ITMC)RWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Ruhr University BochumUniversitätsstr. 15044801BochumGermany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Institut für Technische und Makromolekulare Chemie (ITMC)RWTH Aachen UniversityWorringer Weg 252074AachenGermany
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7
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Kinzel NW, Werlé C, Leitner W. Übergangsmetallkomplexe als Katalysatoren für die elektrische Umwandlung von CO
2
– eine metallorganische Perspektive. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202006988] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Niklas W. Kinzel
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Institut für Technische und Makromolekulare Chemie (ITMC) RWTH Aachen University Worringer Weg 2 52074 Aachen Deutschland
| | - Christophe Werlé
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Walter Leitner
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Institut für Technische und Makromolekulare Chemie (ITMC) RWTH Aachen University Worringer Weg 2 52074 Aachen Deutschland
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8
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Abstract
The decrease of total amount of atmospheric CO2 is an important societal challenge in which CO2 reduction has an important role to play. Electrocatalytic CO2 reduction with homogeneous catalysts is based on highly tunable catalyst design and exploits an abundant C1 source to make valuable products such as fuels and fuel precursors. These methods can also take advantage of renewable electricity as a green reductant. Mn-based catalysts offer these benefits while incorporating a relatively cheap and abundant first-row transition metal. Historically, interest in this field started with Mn(bpy-R)(CO)3X, whose performance matched that of its Re counterparts while achieving substantially lower overpotentials. This review examines an emerging class of homogeneous Mn-based electrocatalysts for CO2 reduction, Mn complexes with meridional tridentate coordination also known as Mn pincers, most of which contain redox-active ligands that enable multi-electron catalysis. Although there are relatively few examples in the literature thus far, these catalysts bring forth new catalytic mechanisms not observed for the well-established Mn(bpy-R)(CO)3X catalysts, and show promising reactivity for future studies.
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Bhattacharya M, Sebghati S, VanderLinden RT, Saouma CT. Toward Combined Carbon Capture and Recycling: Addition of an Amine Alters Product Selectivity from CO to Formic Acid in Manganese Catalyzed Reduction of CO 2. J Am Chem Soc 2020; 142:17589-17597. [PMID: 32955864 DOI: 10.1021/jacs.0c07763] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Owing to the energetic cost associated with CO2 release in carbon capture (CC), the combination of carbon capture and recycling (CCR) is an emerging area of research. In this approach, "captured CO2," typically generated by addition of amines, serves as a substrate for subsequent reduction. Herein, we report that the reduction of CO2 in the presence of morpholine (generating mixtures of the corresponding carbamate and carbamic acid) with a well-established Mn electrocatalyst changes the product selectivity from CO to H2 and formate. The change in selectivity is attributed to in situ generation of the morpholinium carbamic acid, which is sufficiently acidic to protonate the reduced Mn species and generate an intermediate Mn hydride. Thermodynamic studies indicate that the hydride is not sufficiently hydritic to reduce CO2 to formate, unless the apparent hydricity, which encompasses formate binding to the Mn, is considered. Increasing steric bulk around the Mn shuts down rapid homolytic H2 evolution rendering the intermediate Mn hydride more stable; subsequent CO2 insertion appears to be faster than heterolytic H2 production. A comprehensive mechanistic scheme is proposed that illustrates how thermodynamic analysis can provide further insight. Relevant to a range of hydrogenations and reductions is the modulation of the hydricity with substrate binding that makes the reaction favorable. Significantly, this work illustrates a new role for amines in CO2 reduction: changing the product selectivity; this is pertinent more broadly to advancing CCR.
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Affiliation(s)
- Moumita Bhattacharya
- Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112, United States
| | - Sepehr Sebghati
- Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112, United States
| | - Ryan T VanderLinden
- Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112, United States
| | - Caroline T Saouma
- Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112, United States
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10
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Al-Noaimi M, Awwadi FF, Hammoudeh A, Abdel-Rahman OS, Alwahsh MI. Ruthenium (II) quinoline-azoimine complex: Synthesis, crystalline structures spectroelectrochemistry and catalytic properties. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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Research Progress in Conversion of CO 2 to Valuable Fuels. Molecules 2020; 25:molecules25163653. [PMID: 32796612 PMCID: PMC7465062 DOI: 10.3390/molecules25163653] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 12/23/2022] Open
Abstract
Rapid growth in the world's economy depends on a significant increase in energy consumption. As is known, most of the present energy supply comes from coal, oil, and natural gas. The overreliance on fossil energy brings serious environmental problems in addition to the scarcity of energy. One of the most concerning environmental problems is the large contribution to global warming because of the massive discharge of CO2 in the burning of fossil fuels. Therefore, many efforts have been made to resolve such issues. Among them, the preparation of valuable fuels or chemicals from greenhouse gas (CO2) has attracted great attention because it has made a promising step toward simultaneously resolving the environment and energy problems. This article reviews the current progress in CO2 conversion via different strategies, including thermal catalysis, electrocatalysis, photocatalysis, and photoelectrocatalysis. Inspired by natural photosynthesis, light-capturing agents including macrocycles with conjugated structures similar to chlorophyll have attracted increasing attention. Using such macrocycles as photosensitizers, photocatalysis, photoelectrocatalysis, or coupling with enzymatic reactions were conducted to fulfill the conversion of CO2 with high efficiency and specificity. Recent progress in enzyme coupled to photocatalysis and enzyme coupled to photoelectrocatalysis were specially reviewed in this review. Additionally, the characteristics, advantages, and disadvantages of different conversion methods were also presented. We wish to provide certain constructive ideas for new investigators and deep insights into the research of CO2 conversion.
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12
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Photoelectrochemical CO2 reduction to syngas by a ZnO–CdS–Cu nanocomposite. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110953] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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Singh KK, Siegler MA, Thoi VS. Unusual Reactivity of a Thiazole-Based Mn Tricarbonyl Complex for CO 2 Activation. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kundan K. Singh
- 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
| | - V. Sara Thoi
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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14
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Myren THT, Alherz A, Stinson TA, Huntzinger CG, Lama B, Musgrave CB, Luca OR. Metalloradical intermediates in electrocatalytic reduction of CO 2 to CO: Mn versus Re bis-N-heterocyclic carbene pincers. Dalton Trans 2020; 49:2053-2057. [PMID: 31971534 DOI: 10.1039/c9dt04691g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work examines the relative reactivities of ReI and MnI tricarbonyl pyridine-2,6-bis-N-heterocyclic carbene pincers M(CO)3CNCBnX (M = Re, Mn and X = Cl and Br) towards catalysis for the electrochemical conversion of CO2 to CO. Unlike prior well-studied group VII catalysts, Mn(CO)3CNCBnX is extraordinarily active, while the new Re(CO)3CNCBnX complex surprisingly does not exhibit catalytic response. DFT calculations shed light on this puzzling behavior and show that the redox-active pyridine-2,6-bis-N-heterocyclic carbene ligand facilitates the reduction of the ground-state complexes; however, the extent of electronic delocalization in the reduced intermediates differs in the degree of metalloradical character. The highly-active Mn(CO)3CNCBnX complex proceeds through an intermediate with nucleophilic metalloradical character in which 66% of the unpaired electron spin resides on Mn. In contrast, Re(CO)3CNCBnX reduction proceeds through an intermediate with less metalloradical character in which only 38% of the unpaired spin is localized on Re with the remainder delocalized over the ligand. The energetic penalty of the electron delocalization of an electron on the ligand affects the M-CO bond strengths and related kinetic barriers. We discuss these observations in the context of turnover-enabling effects in CO2 reductions mediated by group VII NHC pincer molecular electrocatalysts.
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Affiliation(s)
- Tessa H T Myren
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA.
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15
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Myren THT, Alherz A, Thurston JR, Stinson TA, Huntzinger CG, Musgrave CB, Luca OR. Mn-Based Molecular Catalysts for the Electrocatalytic Disproportionation of CO2 into CO and CO32–. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04773] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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Hameed Y, Rao GK, Ovens JS, Gabidullin B, Richeson D. Visible-Light Photocatalytic Reduction of CO 2 to Formic Acid with a Ru Catalyst Supported by N,N'-Bis(diphenylphosphino)-2,6-diaminopyridine Ligands. CHEMSUSCHEM 2019; 12:3453-3457. [PMID: 31185145 DOI: 10.1002/cssc.201901326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/10/2019] [Indexed: 06/09/2023]
Abstract
Visible-light photocatalytic CO2 reduction is carried out by using a RuII complex supported by N,N'-bis(diphenylphosphino)-2,6-diaminopyridine ("PNP") ligands, an unprecedented molecular architecture for this reaction that breaks the longstanding domination of α-diimine ligands. These competent catalysts transform CO2 into formic acid with high selectivity and turnover number. A proposed mechanism, with combined electron transfer and catalytic cycles, models the experimental rate of formic acid production.
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Affiliation(s)
- Yasmeen Hameed
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Gyandshwar Kumar Rao
- Department of Chemistry, Amity School of Applied Sciences, Amity University, Haryana-, 122413, India
| | - Jeffrey S Ovens
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
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17
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Talukdar K, Issa A, Jurss JW. Synthesis of a Redox-Active NNP-Type Pincer Ligand and Its Application to Electrocatalytic CO 2 Reduction With First-Row Transition Metal Complexes. Front Chem 2019; 7:330. [PMID: 31165057 PMCID: PMC6536570 DOI: 10.3389/fchem.2019.00330] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/24/2019] [Indexed: 11/13/2022] Open
Abstract
We report the synthesis of a rigid phosphine-substituted, redox-active pincer ligand and its application to electrocatalytic CO2 reduction with first-row transition metal complexes. The tridentate ligand was prepared by Stille coupling of 2,8-dibromoquinoline and 2-(tributylstannyl)pyridine, followed by a palladium-catalyzed cross-coupling with HPPh2. Complexes were synthesized from a variety of metal precursors and characterized by NMR, high-resolution mass spectrometry, elemental analysis, and cyclic voltammetry. Formation of bis-chelated metal complexes, rather than mono-chelated complexes, was favored in all synthetic conditions explored. The complexes were assessed for their ability to mediate electrocatalytic CO2 reduction, where the cobalt complex was found to have the best activity for CO2-to-CO conversion in the presence of water as an added proton source.
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Affiliation(s)
- Kallol Talukdar
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
| | - Asala Issa
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
| | - Jonah W Jurss
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
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18
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Dalle K, Warnan J, Leung JJ, Reuillard B, Karmel IS, Reisner E. Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes. Chem Rev 2019; 119:2752-2875. [PMID: 30767519 PMCID: PMC6396143 DOI: 10.1021/acs.chemrev.8b00392] [Citation(s) in RCA: 391] [Impact Index Per Article: 78.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 12/31/2022]
Abstract
The synthesis of renewable fuels from abundant water or the greenhouse gas CO2 is a major step toward creating sustainable and scalable energy storage technologies. In the last few decades, much attention has focused on the development of nonprecious metal-based catalysts and, in more recent years, their integration in solid-state support materials and devices that operate in water. This review surveys the literature on 3d metal-based molecular catalysts and focuses on their immobilization on heterogeneous solid-state supports for electro-, photo-, and photoelectrocatalytic synthesis of fuels in aqueous media. The first sections highlight benchmark homogeneous systems using proton and CO2 reducing 3d transition metal catalysts as well as commonly employed methods for catalyst immobilization, including a discussion of supporting materials and anchoring groups. The subsequent sections elaborate on productive associations between molecular catalysts and a wide range of substrates based on carbon, quantum dots, metal oxide surfaces, and semiconductors. The molecule-material hybrid systems are organized as "dark" cathodes, colloidal photocatalysts, and photocathodes, and their figures of merit are discussed alongside system stability and catalyst integrity. The final section extends the scope of this review to prospects and challenges in targeting catalysis beyond "classical" H2 evolution and CO2 reduction to C1 products, by summarizing cases for higher-value products from N2 reduction, C x>1 products from CO2 utilization, and other reductive organic transformations.
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Affiliation(s)
| | | | - Jane J. Leung
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Bertrand Reuillard
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Isabell S. Karmel
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Erwin Reisner
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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19
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Hameed Y, Gabidullin B, Richeson D. Photocatalytic CO 2 Reduction with Manganese Complexes Bearing a κ 2-PN Ligand: Breaking the α-Diimine Hold on Group 7 Catalysts and Switching Selectivity. Inorg Chem 2018; 57:13092-13096. [PMID: 30351091 DOI: 10.1021/acs.inorgchem.8b02719] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The fundamental challenge of reducing CO2 into more valuable energy-containing compounds depends on revealing new catalysts for this process. By removal of the long-standing limitation of α-diimine ligation, which is dominant in photocatalytic complexes in this area, new visible-light, CO2-reducing photocatalysts based on Mn and Re supported by κ2-PN phosphinoaminopyridine ligands were identified. These catalysts, [M{κ2-(Ph2P)NH(NC5H4)}(CO)3Br], displayed excellent product selectivity and, by a change of only the metal center, gave a dramatic product switch from CO with M = Mn to HCO2H with M = Re. The catalyst systems were explored with variation of the ligand, electron donor, solvent, and photosensitizer. The products were definitively traced using 13CO2 as a substrate. Both complexes quenched the excited-state photosensitizer Ru(bpy)32+*, suggesting oxidative quenching as a potential entry into the catalytic cycle.
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Affiliation(s)
- Yasmeen Hameed
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
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20
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Grills DC, Ertem MZ, McKinnon M, Ngo KT, Rochford J. Mechanistic aspects of CO2 reduction catalysis with manganese-based molecular catalysts. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.022] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Hameed Y, Ouanounou S, Jurca T, Gabidullin B, Korobkov I, Richeson D. Dimers, monomers and pentacoordination in a series of earth-abundant transition metal dibromido complexes supported by a neutral SNS ligand framework. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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McKinnon M, Ngo KT, Sobottka S, Sarkar B, Ertem MZ, Grills DC, Rochford J. Synergistic Metal–Ligand Redox Cooperativity for Electrocatalytic CO2 Reduction Promoted by a Ligand-Based Redox Couple in Mn and Re Tricarbonyl Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00584] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meaghan McKinnon
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Ken T. Ngo
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Sebastian Sobottka
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, Berlin 14195, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, Berlin 14195, Germany
| | - Mehmed Z. Ertem
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - David C. Grills
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
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23
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Taylor JO, Leavey RD, Hartl F. Solvent and Ligand Substitution Effects on the Electrocatalytic Reduction of CO2
with [Mo(CO)4
(x,x
′-dimethyl-2,2′-bipyridine)] (x
=4-6) Enhanced at a Gold Cathodic Surface. ChemElectroChem 2018. [DOI: 10.1002/celc.201800879] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- James O. Taylor
- School of Chemistry, Food and Pharmacy Department of Chemistry; University of Reading; Whiteknights Campus Reading RG6 6AD
| | - Roisín D. Leavey
- School of Chemistry, Food and Pharmacy Department of Chemistry; University of Reading; Whiteknights Campus Reading RG6 6AD
| | - František Hartl
- School of Chemistry, Food and Pharmacy Department of Chemistry; University of Reading; Whiteknights Campus Reading RG6 6AD
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24
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25
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Franco F, Pinto MF, Royo B, Lloret‐Fillol J. A Highly Active N-Heterocyclic Carbene Manganese(I) Complex for Selective Electrocatalytic CO 2 Reduction to CO. Angew Chem Int Ed Engl 2018; 57:4603-4606. [PMID: 29481726 PMCID: PMC5947128 DOI: 10.1002/anie.201800705] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Indexed: 12/19/2022]
Abstract
We report here the first purely organometallic fac-[MnI (CO)3 (bis-Me NHC)Br] complex with unprecedented activity for the selective electrocatalytic reduction of CO2 to CO, exceeding 100 turnovers with excellent faradaic yields (ηCO ≈95 %) in anhydrous CH3 CN. Under the same conditions, a maximum turnover frequency (TOFmax ) of 2100 s-1 was measured by cyclic voltammetry, which clearly exceeds the values reported for other manganese-based catalysts. Moreover, the addition of water leads to the highest TOFmax value (ca. 320 000 s-1 ) ever reported for a manganese-based catalyst. A MnI tetracarbonyl intermediate was detected under catalytic conditions for the first time.
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Affiliation(s)
- Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and TechnologyAvinguda Països Catalans 1643007TarragonaSpain
| | - Mara F. Pinto
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB)Nova University of LisbonAv. da República2780-157OeirasPortugal
| | - Beatriz Royo
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB)Nova University of LisbonAv. da República2780-157OeirasPortugal
| | - Julio Lloret‐Fillol
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and TechnologyAvinguda Països Catalans 1643007TarragonaSpain
- Catalan Institution for Research and Advanced Studies (ICREA)Passeig Lluïs Companys, 2308010BarcelonaSpain
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26
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Stanbury M, Compain JD, Chardon-Noblat S. Electro and photoreduction of CO 2 driven by manganese-carbonyl molecular catalysts. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.01.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Franco F, Pinto MF, Royo B, Lloret‐Fillol J. A Highly Active N‐Heterocyclic Carbene Manganese(I) Complex for Selective Electrocatalytic CO
2
Reduction to CO. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800705] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Mara F. Pinto
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB) Nova University of Lisbon Av. da República 2780-157 Oeiras Portugal
| | - Beatriz Royo
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB) Nova University of Lisbon Av. da República 2780-157 Oeiras Portugal
| | - Julio Lloret‐Fillol
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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28
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Employing a neutral “PN3P” pincer to access mer-Re(I) tricarbonyl complexes: Autoionization of a halo ligand and the role of an N-R (R = H, Me) substituent. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.08.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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29
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Francke R, Schille B, Roemelt M. Homogeneously Catalyzed Electroreduction of Carbon Dioxide-Methods, Mechanisms, and Catalysts. Chem Rev 2018; 118:4631-4701. [PMID: 29319300 DOI: 10.1021/acs.chemrev.7b00459] [Citation(s) in RCA: 587] [Impact Index Per Article: 97.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The utilization of CO2 via electrochemical reduction constitutes a promising approach toward production of value-added chemicals or fuels using intermittent renewable energy sources. For this purpose, molecular electrocatalysts are frequently studied and the recent progress both in tuning of the catalytic properties and in mechanistic understanding is truly remarkable. While in earlier years research efforts were focused on complexes with rare metal centers such as Re, Ru, and Pd, the focus has recently shifted toward earth-abundant transition metals such as Mn, Fe, Co, and Ni. By application of appropriate ligands, these metals have been rendered more than competitive for CO2 reduction compared to the heavier homologues. In addition, the important roles of the second and outer coordination spheres in the catalytic processes have become apparent, and metal-ligand cooperativity has recently become a well-established tool for further tuning of the catalytic behavior. Surprising advances have also been made with very simple organocatalysts, although the mechanisms behind their reactivity are not yet entirely understood. Herein, the developments of the last three decades in electrocatalytic CO2 reduction with homogeneous catalysts are reviewed. A discussion of the underlying mechanistic principles is included along with a treatment of the experimental and computational techniques for mechanistic studies and catalyst benchmarking. Important catalyst families are discussed in detail with regard to mechanistic aspects, and recent advances in the field are highlighted.
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Affiliation(s)
- Robert Francke
- Institute of Chemistry , Rostock University , Albert-Einstein-Strasse 3a , 18059 Rostock , Germany
| | - Benjamin Schille
- Institute of Chemistry , Rostock University , Albert-Einstein-Strasse 3a , 18059 Rostock , Germany
| | - Michael Roemelt
- Lehrstuhl für Theoretische Chemie , Ruhr-University Bochum , 44780 Bochum , Germany.,Max-Planck Institut für Kohlenforschung , Kaiser-Wilhelm Platz 1 , 45470 Mülheim an der Ruhr , Germany
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30
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Rao GK, Pell W, Gabidullin B, Korobkov I, Richeson D. Electro- and Photocatalytic Generation of H 2 Using a Distinctive Co II "PN 3 P" Pincer Supported Complex with Water or Saturated Saline as a Hydrogen Source. Chemistry 2017; 23:16763-16767. [PMID: 29044839 DOI: 10.1002/chem.201704882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Indexed: 12/18/2022]
Abstract
Efficient electrocatalytic production of H2 from mixed water/acetonitrile solutions was achieved using three new CoII complexes supported by the neutral pincer ligand bis(diphenylphosphino)-2,6-di(methylamino)pyridine ("PN3 P"). At -1.9 V vs. Fc/Fc+ , these catalysts showed 96 % Faradaic efficiency with added water or saturated aqueous saline at rates of up to 316 L(mol cat)-1 (cm2 )-1 h-1 using a glassy carbon working electrode. The complex [Co(κ3 -2,6-{Ph2 PNMe}2 (NC5 H3 )Br2 ] (1) was also able to photocatalytically reduce water to hydrogen in the presence of a Ru(bpy)32+ photosensitizer and a reductant.
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Affiliation(s)
- Gyandshwar Kumar Rao
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Wendy Pell
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
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31
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Schäfer KM, Reinders L, Fiedler J, Ringenberg MR. Twisting and Tilting 1,1′-Bis(dialkylphosphino)ferrocene Bound to Low Valent Tricarbonylmaganese(I to −I). Inorg Chem 2017; 56:14688-14696. [DOI: 10.1021/acs.inorgchem.7b02627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- K. Michael Schäfer
- Institut für
Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70550 Stuttgart, Germany
| | - Leonie Reinders
- Institut für
Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70550 Stuttgart, Germany
| | - Jan Fiedler
- The Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry, Dolejškova 3, 18223 Prague, Czech Republic
| | - Mark R. Ringenberg
- Institut für
Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70550 Stuttgart, Germany
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32
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Stanbury M, Compain JD, Trejo M, Smith P, Gouré E, Chardon-Noblat S. Mn-carbonyl molecular catalysts containing a redox-active phenanthroline-5,6-dione for selective electro- and photoreduction of CO2 to CO or HCOOH. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.04.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Ngo KT, McKinnon M, Mahanti B, Narayanan R, Grills DC, Ertem MZ, Rochford J. Turning on the Protonation-First Pathway for Electrocatalytic CO2 Reduction by Manganese Bipyridyl Tricarbonyl Complexes. J Am Chem Soc 2017; 139:2604-2618. [DOI: 10.1021/jacs.6b08776] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ken T. Ngo
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Meaghan McKinnon
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Bani Mahanti
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Remya Narayanan
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - David C. Grills
- Chemistry Division, Energy & Photon Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Mehmed Z. Ertem
- Chemistry Division, Energy & Photon Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
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34
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Takeda H, Cometto C, Ishitani O, Robert M. Electrons, Photons, Protons and Earth-Abundant Metal Complexes for Molecular Catalysis of CO2 Reduction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02181] [Citation(s) in RCA: 455] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hiroyuki Takeda
- Department
of Chemistry, Faculty of Science, Tokyo Institute of Technology, 2-12-1, NE-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Claudio Cometto
- Université
Paris Diderot, Sorbonne Paris Cité, Laboratoire d’Electrochimie
Moléculaire, Unité Mixte de Recherche Université−CNRS
no. 7591, Bâtiment Lavoisier,
15 rue Jean de Baïf, 75205 CEDEX
13 Paris, France
| | - Osamu Ishitani
- Department
of Chemistry, Faculty of Science, Tokyo Institute of Technology, 2-12-1, NE-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Marc Robert
- Université
Paris Diderot, Sorbonne Paris Cité, Laboratoire d’Electrochimie
Moléculaire, Unité Mixte de Recherche Université−CNRS
no. 7591, Bâtiment Lavoisier,
15 rue Jean de Baïf, 75205 CEDEX
13 Paris, France
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