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Bhattacharyya HP, Sarma M. Efficiency Conceptualization Model: A Theoretical Method for Predicting the Turnover of Catalysts. Chemphyschem 2024; 25:e202400004. [PMID: 38619023 DOI: 10.1002/cphc.202400004] [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: 01/02/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/16/2024]
Abstract
In recent times, the theoretical prediction of catalytic efficiency is of utmost urgency. With the advent of density functional theory (DFT), reliable computations can delineate a quantitative aspect of the study. To this state-of-the-art approach, valuable incorporation would be a tool that can acknowledge the efficiency of a catalyst. In the current work, we developed the efficiency conceptualization model (ECM) that utilizes the quantum mechanical tool to achieve efficiency in terms of turnover frequency (TOF). Twenty-six experimentally designed transition metal (TM) water oxidation catalysts were chosen under similar experimental conditions of temperature, pressure, and pH to execute the same. The computations conclude that the Fe-based [Fe(OTf)2(Me2Pytacn)] (MWOC-17) is a highly active catalyst and, therefore, can endure for more time in the catalytic cycle. Our results conclude that the Ir-based catalysts [Cp*Ir(κ2-N,O)X] with MWOC-23: X=Cl; and MWOC-24: X=NO3 report the highest computed turnover numbers (TONs),τ c o m p u t e d T O N 0 ${\tau _{computed\;TON}^0 }$ of 406 and 490 against the highest experimental TONs,τ e x p e r i m e n t a l T O N ${\tau _{experimental\;TON} }$ of 1200 and 2000 respectively, whereas the Co-based [Co(12-TMC)]2+ (MWOC-19) has the lowest TONs (τ c o m p u t e d T O N 0 ${\tau _{computed\;TON}^0 }$ =19, τexperimental TON=16) among the chosen catalysts and thereby successful in corroborating the previous experimental results.
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Affiliation(s)
| | - Manabendra Sarma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
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2
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Lavrova MA, Verzun SA, Mishurinskiy SA, Sirotin MA, Bykova SK, Gontcharenko VE, Mariasina SS, Korshunov VM, Taydakov IV, Belousov YA, Dolzhenko VD. Fine-Tuning of the Optical and Electrochemical Properties of Ruthenium(II) Complexes with 2-Arylbenzimidazoles and 4,4'-Dimethoxycarbonyl-2,2'-bipyridine. Molecules 2023; 28:6541. [PMID: 37764316 PMCID: PMC10536653 DOI: 10.3390/molecules28186541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
A series of cyclometalated complexes of ruthenium (II) with four different substituents in the aryl fragment of benzimidazole was synthesized in order to study the effect of substituent donation on the electronic structure of the substances. The resulting complexes were studied using X-ray diffraction, NMR spectroscopy, MALDI mass spectrometry, electron absorption spectroscopy, luminescence spectroscopy, and cyclic voltammetry as well as DFT/TDDFT was also used to interpret the results. All the complexes have intense absorption in the range of up to 700 nm, the triplet nature of the excited state was confirmed by measurement of luminescence decay. With an increase in substituent donation, a red shift of the absorption and emission bands occurs, and the lifetime of the excited state and the redox potential of the complex decrease. The combination of these properties shows that the complexes are excellent dyes and can be used as photosensitizers.
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Affiliation(s)
- Maria A. Lavrova
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
| | - Stepan A. Verzun
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
| | - Sergey A. Mishurinskiy
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
| | - Maxim A. Sirotin
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
- N.N. Semenov Federal Research Center for Chemical Physics, Kosygina Street 4, 119991 Moscow, Russia
| | - Sofya K. Bykova
- Higher Chemical College of RAS, Mendeleev University of Chemical Technology, Miusskaya Square, 9, 125047 Moscow, Russia;
| | - Victoria E. Gontcharenko
- Faculty of Chemistry, National Research University Higher School of Economics, 20 Miasnitskaya Street, 101000 Moscow, Russia;
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.M.K.); (I.V.T.)
| | - Sofia S. Mariasina
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
- Faculty of Fundamental Medicine, Lomonosov Moscow State University, 119991 Moscow, Russia
- Institute of Functional Genomics, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Vladislav M. Korshunov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.M.K.); (I.V.T.)
- Faculty of Fundamental Sciences, Bauman Moscow State Technical University, 105005 Moscow, Russia
| | - Ilya V. Taydakov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.M.K.); (I.V.T.)
- Academic Department of Innovational Materials and Technologies Chemistry, G.V. Plekhanov Russian University of Economics, 36 Stremyannoy per., 117997 Moscow, Russia
| | - Yury A. Belousov
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.M.K.); (I.V.T.)
| | - Vladimir D. Dolzhenko
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory Street, Building 1/3, 119234 Moscow, Russia; (S.A.V.); (S.A.M.); (M.A.S.); (S.S.M.); (Y.A.B.)
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, 119991 Moscow, Russia
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3
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Schilling M, Cunha RA, Luber S. Enhanced Ab Initio Molecular Dynamics Exploration Unveils the Complex Role of Different Intramolecular Bases on the Water Nucleophilic Attack Mechanism. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01422] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mauro Schilling
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Richard A. Cunha
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Sandra Luber
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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4
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Rosen AS, Mian MR, Islamoglu T, Chen H, Farha OK, Notestein JM, Snurr RQ. Tuning the Redox Activity of Metal–Organic Frameworks for Enhanced, Selective O2 Binding: Design Rules and Ambient Temperature O2 Chemisorption in a Cobalt–Triazolate Framework. J Am Chem Soc 2020; 142:4317-4328. [DOI: 10.1021/jacs.9b12401] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew S. Rosen
- Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - M. Rasel Mian
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Timur Islamoglu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Haoyuan Chen
- Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Omar K. Farha
- Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Randall Q. Snurr
- Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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Zhang LL, Wang XY, Jiang KY, Zhao BY, Yan HM, Zhang XY, Zhang ZX, Guo Z, Che CM. A theoretical study on the oxidation of alkenes to aldehydes catalyzed by ruthenium porphyrins using O 2 as the sole oxidant. Dalton Trans 2018; 47:5286-5297. [PMID: 29569676 DOI: 10.1039/c8dt00614h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Density functional theory (DFT) calculations were used to study the ruthenium porphyrin-catalyzed oxidation of styrene to generate an aldehyde. The results indicate that two reactive oxidants, dioxoruthenium and monooxoruthenium-superoxo porphyrins, participate in the catalytic oxidation. In the mechanism, the resultant monooxoruthenium porphyrin acts in the tandem epoxide isomerization (E-I) to selectively yield an aldehyde and generate a dioxoruthenium porphyrin, thereby triggering new oxidation reaction cycles. In this calculation, several key elements responsible for the observed oxidative ability have been established by using Frontier molecular orbital (FMO) theory, natural bond orbital (NBO) analysis, etc., which include the reaction energy, the spin exchange effect, the spin-state conversion process, and the energy level of the lowest unoccupied molecular orbitals (LUMOs) of the reactive oxidants. The comparative oxidative abilities of the ruthenium-oxo/superoxo compounds with different axial ligands are also investigated. The results suggest that the ruthenium-oxo/superoxo species featuring a chlorine axial ligand is more reactive than that substituted with oxygen. This tuneable reactivity can be understood when considering the different electronic characters of the two ligands and the effective atomic number rule (EAN).
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Affiliation(s)
- Lin-Lin Zhang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Xiang-Yun Wang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Kun-Yao Jiang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Bing-Yuan Zhao
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Hui-Min Yan
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Xiao-Yun Zhang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Zhu-Xia Zhang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Zhen Guo
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, P. R. China.
| | - Chi-Ming Che
- Department of Chemistry, the University of Hong Kong, Hong Kong, P. R. China.
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6
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Viere EJ, Kuhn AE, Roeder MH, Piro NA, Kassel WS, Dudley TJ, Paul JJ. Spectroelectrochemical studies of a ruthenium complex containing the pH sensitive 4,4'-dihydroxy-2,2'-bipyridine ligand. Dalton Trans 2018; 47:4149-4161. [PMID: 29473071 DOI: 10.1039/c7dt04554a] [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
Attaining high oxidation states at the metal center of transition metal complexes is a key design principle for many catalytic processes. One way to support high oxidation state chemistry is to utilize ligands that are electron-donating in nature. Understanding the structural and electronic changes of metal complexes as higher oxidation states are reached is critical towards designing more robust catalysts that are able to turn over at high rates without decomposing. To this end, we report herein the changes in structural and electronic properties as [Ru(bpy)2(44'bpy(OH)2)]2+ is oxidized to [Ru(bpy)2(44'bpy(OH)2)]3+ (bpy = 2,2'-bipyridine; 44'bpy(OH)2 = 4,4'-dihydroxy-2,2'-bipyridine). The 44'bpy(OH)2 ligand is a pH-dependent ligand where deprotonation of the hydroxyl groups leads to significant electronic donation to the metal center. A Pourbaix Diagram of the complex reveals a pH independent reduction potential below pH = 2.0 for the Ru3+/2+ process at 0.91 V vs. Ag/AgCl. Above pH = 2.0, pH dependence is observed with a decrease in reduction potential until pH = 6.8 where the complex is completely deprotonated, resulting in a reduction potential of 0.62 V vs. Ag/AgCl. Spectroelectrochemical studies as a function of pH reveal the disappearance of the Metal to Ligand Charge Transfer (MLCT) or Mixed Metal-Ligand to Charge Transfer bands upon oxidation and the appearance of a new low energy band. DFT calculations for this low energy band were carried out using both B3LYP and M06-L functionals for all protonation states and suggest that numerous new transition types occur upon oxidation to Ru3+.
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Affiliation(s)
- Erin J Viere
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Ashley E Kuhn
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Margaret H Roeder
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Nicholas A Piro
- Department of Chemistry, Albright College, 1621 N. 13th Street, Reading, PA 19604, USA
| | - W Scott Kassel
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Timothy J Dudley
- Math, Science and Technology Department, University of Minnesota Crookston, 2900 University Ave., Crookston, MN 56716, USA
| | - Jared J Paul
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
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7
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Lu Z, Gao Y, Chen H, Liu Z, Chen L, Sun L. Efficient molecular ruthenium catalysts containing anionic ligands for water oxidation. Dalton Trans 2018; 45:18459-18464. [PMID: 27431362 DOI: 10.1039/c6dt02056a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new mononuclear Ru complexes RuII(bipa)(pic)3 (1; H2bipa = 6-(1H-benzo[d]imidazol-2-yl)picolinic acid, pic = 4-picoline) and RuII(pbic)(pic)3 (2; H2pbic = 2-(pyridin-2-yl)-1H-benzo[d]imidazole-7-carboxylic acid, pic = 4-picoline) based on anionic ligands were successfully synthesized, and characterized using NMR spectroscopy, mass spectrometry, and X-ray crystallography. These catalysts showed high activities and stabilities in water oxidation in homogeneous systems with a high turnover number of 2100 and a turnover frequency of 0.21 s-1 for complex 1. The O-O band formation mechanism involved water nucleophilic attack. An active catalytic intermediate, i.e., RuIV-OH, was detected using high-resolution mass spectrometry.
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Affiliation(s)
- Zhongkai Lu
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China.
| | - Yan Gao
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China.
| | - Hong Chen
- Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Zhao Liu
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China.
| | - Lifang Chen
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China.
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, China. and Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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8
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Tognetti V, Guégan F, Luneau D, Chermette H, Morell C, Joubert L. Structural effects in octahedral carbonyl complexes: an atoms-in-molecules study. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2116-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Guégan F, Tognetti V, Joubert L, Chermette H, Luneau D, Morell C. Towards the first theoretical scale of the trans effect in octahedral complexes. Phys Chem Chem Phys 2016; 18:982-90. [DOI: 10.1039/c5cp04982b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this paper, we show that trans effects in octahedral complexes can primarily be related to differences in the ability, for a given ligand, to cede electron density to the metal cation under the influence of the ligand at the trans position.
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Affiliation(s)
- Frédéric Guégan
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
| | - Vincent Tognetti
- Normandy University
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
| | - Laurent Joubert
- Normandy University
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
| | - Henry Chermette
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
| | - Dominique Luneau
- Université de Lyon
- Laboratoire des Multimatériaux et Interfaces
- UMR 5615
- CNRS
- Université Claude Bernard Lyon 1
| | - Christophe Morell
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
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10
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11
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Rabten W, Kärkäs MD, Åkermark T, Chen H, Liao RZ, Tinnis F, Sun J, Siegbahn PEM, Andersson PG, Åkermark B. Catalytic water oxidation by a molecular ruthenium complex: unexpected generation of a single-site water oxidation catalyst. Inorg Chem 2015; 54:4611-20. [PMID: 25945608 DOI: 10.1021/ic502755c] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The increasing energy demand calls for the development of sustainable energy conversion processes. Here, the splitting of H2O to O2 and H2, or related fuels, constitutes an excellent example of solar-to-fuel conversion schemes. The critical component in such schemes has proven to be the catalyst responsible for mediating the four-electron oxidation of H2O to O2. Herein, we report on the unexpected formation of a single-site Ru complex from a ligand envisioned to accommodate two metal centers. Surprising N-N bond cleavage of the designed dinuclear ligand during metal complexation resulted in a single-site Ru complex carrying a carboxylate-amide motif. This ligand lowered the redox potential of the Ru complex sufficiently to permit H2O oxidation to be carried out by the mild one-electron oxidant [Ru(bpy)3](3+) (bpy = 2,2'-bipyridine). The work thus highlights that strongly electron-donating ligands are important elements in the design of novel, efficient H2O oxidation catalysts.
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Affiliation(s)
| | | | | | - Hong Chen
- §Faculty of Material Science and Chemistry, China University of Geosciences, 430074, Wuhan, China
| | - Rong-Zhen Liao
- ∥Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | | | - Junliang Sun
- ⊥College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
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12
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Oyama D, Yuzuriya K, Naoi R, Hamada T, Takase T. Syntheses of Geometrical Isomers for Comparison of Properties Caused by Steric and Electronic Effects in Carbonylruthenium(II) Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140125] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Dai Oyama
- Department of Industrial Systems Engineering, Cluster of Science and Engineering, Fukushima University
| | - Kazumi Yuzuriya
- Department of Industrial Systems Engineering, Cluster of Science and Engineering, Fukushima University
| | - Ryutaro Naoi
- Department of Industrial Systems Engineering, Cluster of Science and Engineering, Fukushima University
| | - Takashi Hamada
- Department of Industrial Systems Engineering, Cluster of Science and Engineering, Fukushima University
| | - Tsugiko Takase
- Center for Practical and Project-Based Learning, Cluster of Science and Engineering, Fukushima University
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13
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Kang R, Chen K, Yao J, Shaik S, Chen H. Probing Ligand Effects on O–O Bond Formation of Ru-Catalyzed Water Oxidation: A Computational Survey. Inorg Chem 2014; 53:7130-6. [DOI: 10.1021/ic500008c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Runhua Kang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Kejuan Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiannian Yao
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Sason Shaik
- Institute
of Chemistry and the Lise Meitner-Minerva Center for Computational
Quantum Chemistry, The Hebrew University of Jerusalem, Givat Ram
Campus, 91904, Jerusalem, Israel
| | - Hui Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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14
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Muckerman JT, Kowalczyk M, Badiei YM, Polyansky DE, Concepcion JJ, Zong R, Thummel RP, Fujita E. New water oxidation chemistry of a seven-coordinate ruthenium complex with a tetradentate polypyridyl ligand. Inorg Chem 2014; 53:6904-13. [PMID: 24911180 DOI: 10.1021/ic500709h] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The mononuclear ruthenium(II) complex [Ru](2+) (Ru = Ru(dpp)(pic)2, where dpp is the tetradentate 2,9-dipyrid-2'-yl-1,10-phenanthroline ligand and pic is 4-picoline) reported by Thummel's group (Inorg. Chem. 2008, 47, 1835-1848) that contains no water molecule in its primary coordination shell is evaluated as a catalyst for water oxidation in artificial photosynthesis. A detailed theoretical characterization of the energetics, thermochemistry, and spectroscopic properties of intermediates allowed us to interpret new electrochemical and spectroscopic experimental data, and propose a mechanism for the water oxidation process that involves an unprecedented sequence of seven-coordinate ruthenium complexes as intermediates. This analysis provides insights into a mechanism that generates four electrons and four protons in the solution and a gas-phase oxygen molecule at different pH values. On the basis of the calculations and corroborated substantially by experiments, the catalytic cycle goes through [(2)Ru(III)](3+) and [(2)Ru(V)(O)](3+) to [(1)Ru(IV)(OOH)](3+) then [(2)Ru(III)(···(3)O2)](3+) at pH 0, and through [(3)Ru(IV)(O)](2+), [(2)Ru(V)(O)](3+), and [(1)Ru(IV)(OO)](2+) at pH 9 before reaching the same [(2)Ru(III)(···(3)O2)](3+) species, from which the liberation of the weakly bound O2 might require an additional oxidation to form [(3)Ru(IV)(O)](2+) to initiate further cycles involving all seven-coordinate species.
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Affiliation(s)
- James T Muckerman
- Chemistry Department, Brookhaven National Laboratory , Upton, New York 11973-5000, United States
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15
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Oyama D, Yamanaka T, Fukuda A, Takase T. Modulation of Intramolecular Hydrogen-bonding Strength by Axial Ligands in Ruthenium(II) Complexes. CHEM LETT 2013. [DOI: 10.1246/cl.130805] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Dai Oyama
- Cluster of Science and Engineering, Fukushima University
| | | | - Ayumi Fukuda
- Cluster of Science and Engineering, Fukushima University
| | - Tsugiko Takase
- Cluster of Science and Engineering, Fukushima University
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16
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Lang ZL, Yang GC, Ma NN, Wen SZ, Yan LK, Guan W, Su ZM. DFT characterization on the mechanism of water splitting catalyzed by single-Ru-substituted polyoxometalates. Dalton Trans 2013; 42:10617-25. [DOI: 10.1039/c3dt50666e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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