1
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Ismael F, Fleming CL, Christopher TD, Söhnel T, Zhou Y, Krenske EH, Gahan LR, Blackman AG. Co(III) complexes of the pentadentate NHC ligand PY4Im: carbene-induced trans influences and the non-disappearing 13C NMR peak. Dalton Trans 2024; 53:12688-12697. [PMID: 39015102 DOI: 10.1039/d4dt01579g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Co(III) complexes of the N-heterocyclic carbene ligand PY4Im (PY4Im = (1,3-bis(bis(2-pyridyl)methyl)imidazol-2-ylidene)) having the general formula [(PY4Im)Co(X)](ClO4)n (X = NCMe; n = 3: OH-, N3-, NCS-, ONO-, F-; n = 2: O2CO2-, n = 1; (N3-)3, n = 0) were prepared and structurally characterised. X-ray structural data are consistent with the presence of a trans influence due to the coordinated carbene carbon, and this is also supported by computational results. 13C NMR spectra of the complexes did not display peaks corresponding to the carbene carbon, except in the case of the [(PY4Im)Co(O2CO)]+ cation, where a peak at δ = 170.21 ppm was observed. However, HMBC spectra allowed indirect determination of the chemical shifts of the carbene carbon in the remaining complexes, owing to the geometry of the PY4Im ligand. Calculated 13C chemical shifts for the complexes showed very good agreement with the experimental values for all but the carbene carbon atoms in all cases.
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Affiliation(s)
- Fouad Ismael
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
| | - Cassandra L Fleming
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
- The University of Sydney, Chemistry Building, Eastern Ave, Camperdown, NSW 2050, Australia
| | - Timothy D Christopher
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Yuchen Zhou
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Allan G Blackman
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
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2
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Camara F, Gavaggio T, Dautreppe B, Chauvin J, Pécaut J, Aldakov D, Collomb MN, Fortage J. Electrochemical Properties of a Rhodium(III) Mono-Terpyridyl Complex and Use as a Catalyst for Light-Driven Hydrogen Evolution in Water. Molecules 2022; 27:molecules27196614. [PMID: 36235152 PMCID: PMC9571878 DOI: 10.3390/molecules27196614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/23/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022] Open
Abstract
Molecular hydrogen (H2) is considered one of the most promising fuels to decarbonize the industrial and transportation sectors, and its photocatalytic production from molecular catalysts is a research field that is still abounding. The search for new molecular catalysts for H2 production with simple and easily synthesized ligands is still ongoing, and the terpyridine ligand with its particular electronic and coordination properties, is a good candidate to design new catalysts meeting these requirements. Herein, we have isolated the new mono-terpyridyl rhodium complex, [RhIII(tpy)(CH3CN)Cl2](CF3SO3) (Rh-tpy), and shown that it can act as a catalyst for the light-induced proton reduction into H2 in water in the presence of the [Ru(bpy)3]Cl2 (Ru) photosensitizer and ascorbate as sacrificial electron donor. Under photocatalytic conditions, in acetate buffer at pH 4.5 with 0.1 M of ascorbate and 530 μM of Ru, the Rh-tpy catalyst produces H2 with turnover number versus catalyst (TONCat*) of 300 at a Rh concentration of 10 μM, and up to 1000 at a concentration of 1 μM. The photocatalytic performance of Ru/Rh-tpy/HA-/H2A has been also compared with that obtained with the bis-dimethyl-bipyridyl complex [RhIII(dmbpy)2Cl2]+ (Rh2) as a catalyst in the same experimental conditions. The investigation of the electrochemical properties of Rh-tpy in DMF solvent reveals that the two-electrons reduced state of the complex, the square-planar [RhI(tpy)Cl] (RhI-tpy), is quantitatively electrogenerated by bulk electrolysis. This complex is stable for hours under an inert atmosphere owing to the π-acceptor property of the terpyridine ligand that stabilizes the low oxidation states of the rhodium, making this catalyst less prone to degrade during photocatalysis. The π-acceptor property of terpyridine also confers to the Rh-tpy catalyst a moderately negative reduction potential (Epc(RhIII/RhI) = -0.83 V vs. SCE in DMF), making possible its reduction by the reduced state of Ru, [RuII(bpy)(bpy•-)]+ (Ru-) (E1/2(RuII/Ru-) = -1.50 V vs. SCE) generated by a reductive quenching of the Ru excited state (*Ru) by ascorbate during photocatalysis. A Stern-Volmer plot and transient absorption spectroscopy confirmed that the first step of the photocatalytic process is the reductive quenching of *Ru by ascorbate. The resulting reduced Ru species (Ru-) were then able to activate the RhIII-tpy H2-evolving catalyst by reduction generating RhI-tpy, which can react with a proton on a sub-nanosecond time scale to form a RhIII(H)-tpy hydride, the key intermediate for H2 evolution.
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Affiliation(s)
- Fakourou Camara
- DCM, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
- SyMMES, IRIG, CEA, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - Thomas Gavaggio
- DCM, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | | | - Jérôme Chauvin
- DCM, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - Jacques Pécaut
- SyMMES, IRIG, CEA, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - Dmitry Aldakov
- SyMMES, IRIG, CEA, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - Marie-Noëlle Collomb
- DCM, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
- Correspondence: (M.-N.C.); (J.F.)
| | - Jérôme Fortage
- DCM, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
- Correspondence: (M.-N.C.); (J.F.)
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3
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Droghetti F, Lucarini F, Molinari A, Ruggi A, Natali M. Recent findings and future directions in photosynthetic hydrogen evolution using polypyridine cobalt complexes. Dalton Trans 2022; 51:10658-10673. [PMID: 35475511 PMCID: PMC9936794 DOI: 10.1039/d2dt00476c] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/14/2022] [Indexed: 12/25/2022]
Abstract
The production of hydrogen gas using water as the molecular substrate currently represents one of the most challenging and appealing reaction schemes in the field of artificial photosynthesis (AP), i.e., the conversion of solar energy into fuels. In order to be efficient, this process requires a suitable combination of a light-harvesting sensitizer, an electron donor, and a hydrogen-evolving catalyst (HEC). In the last few years, cobalt polypyridine complexes have been discovered to be competent molecular catalysts for the hydrogen evolution reaction (HER), showing enhanced efficiency and stability with respect to previously reported molecular species. This perspective collects information about all relevant cobalt polypyridine complexes employed for the HER in aqueous solution under light-driven conditions in the presence of Ru(bpy)32+ (where bpy = 2,2'-bipyridine) as the photosensitizer and ascorbate as the electron donor, trying to highlight promising chemical motifs and aiming towards efficient catalytic activity in order to stimulate further efforts to design molecular catalysts for hydrogen generation and allow their profitable implementation in devices. As a final step, a few suggestions for the benchmarking of HECs employed under light-driven conditions are introduced.
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Affiliation(s)
- Federico Droghetti
- Department of Chemical, Pharmaceutical, and Agricultural Sciences (DOCPAS), University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
| | - Fiorella Lucarini
- Département de Chimie, Université de Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
| | - Alessandra Molinari
- Department of Chemical, Pharmaceutical, and Agricultural Sciences (DOCPAS), University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
| | - Albert Ruggi
- Département de Chimie, Université de Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
| | - Mirco Natali
- Department of Chemical, Pharmaceutical, and Agricultural Sciences (DOCPAS), University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
- Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SolarChem), sez. di Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
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4
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Costentin C, Camara F, Fortage J, Collomb MN. Photoinduced Catalysis of Redox Reactions. Turnover Numbers, Turnover Frequency, and Limiting Processes: Kinetic Analysis and Application to Light-Driven Hydrogen Production. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cyrille Costentin
- Univ Grenoble Alpes, DCM, CNRS, 38000 Grenoble, France
- Université Paris Cité, 75013 Paris, France
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5
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Tritton DN, Tang FK, Bodedla GB, Lee FW, Kwan CS, Leung KCF, Zhu X, Wong WY. Development and advancement of iridium(III)-based complexes for photocatalytic hydrogen evolution. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214390] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Sen A, Rajaraman G. Can you break the oxo-wall? A multiconfigurational perspective. Faraday Discuss 2022; 234:175-194. [PMID: 35147623 DOI: 10.1039/d1fd00072a] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The concept of the "oxo-wall" was conceived about 60 years ago by Harry B. Gray, and has been found to be related to the non-existence of high-valent M-oxo species in the +IV oxidation state in a tetragonal geometry beyond group 8 in the periodic table. Several efforts have been made in the past decades to test and find examples that violate this theory. Several claims of violation in the past were attributed to the difference in the geometries/coordination number and, therefore, these are not examples of true violation. In recent years, substantial efforts have been undertaken to synthesise a true CoIVO species with various ligand architectures. CoIVO and CoIII-O˙ are electromers and, while they are interchangeably used in the literature; the former violates the oxo-wall while the latter does not. The possibility that these two species could exist in various proportions similar to resonating structures has not been considered in detail in this area. Furthermore, there have been no attempts to quantify such mixing. In this direction, we have employed density functional theory (DFT) and ab initio CASSCF/NEVPT2 methods to quantify the co-existence of CoIVO and CoIII-O˙ isomeric species. By thoroughly studying six different metal-oxo species, we affirm that the nature of such electromeric mixing is minimal/negligible for FeIVO and MnIVO species - both are pre-oxo-wall examples. By studying four different ligand architectures with Co-oxo species, our results unveil that the mixing of CoIVO ↔ CoIII-O˙ is substantial in all geometries, with dominant CoIVO species favourable for the S = 3/2 intermediate spin state. The percentage of the CoIII-O˙ species is enhanced substantially for the S = 1/2 low-spin state. We have attempted to develop a tool to estimate the percentage of the CoIII-O˙ species using various structural parameters. Among those tested, a linear relationship between % of CoIII-O˙ and a bond length based ratio is found (, where d(Co-O) and d(Co-Nax) are the axial Co-O and Co-Nax bond lengths in Å, respectively). It is found that the higher the Rd, the greater the CoIII-O˙ character will be and the geometrically portable correlation developed offers a way to qualitatively compute the % of CoIII-O˙ character for unknown geometries.
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Affiliation(s)
- Asmita Sen
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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7
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Rajak S, Vu NN, Kaur P, Duong A, Nguyen-Tri P. Recent progress on the design and development of diaminotriazine based molecular catalysts for light-driven hydrogen production. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Wang NS, Zhan JZ, Liu ZQ, Cao QQ, Wang CL, Zhan SZ. Impact of oxidation state of metal on electro-catalyzed hydrogen production by cobalt complexes of N-phenylpyridin-2-ylmethanimine. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1884234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Nan-Shu Wang
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Jun-Zheng Zhan
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Ze-Quan Liu
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Qian-Qian Cao
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Chun-Li Wang
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Shu-Zhong Zhan
- College of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou, China
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9
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Celestine MJ, Lawrence MA, Schott O, Picard V, Hanan GS, Marquez EM, Harold CG, Kuester CT, Frenzel BA, Hamaker CG, Hightower SE, McMillen CD, Holder AA. Synthesis, structure, and hydrogen evolution studies of a heteroleptic Co(III) complex. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Guo X, Li C, Wang W, Zhang B, Hou Y, Wang X, Zhou Q. Electronic effects on polypyridyl Co complex-based water reduction catalysts. RSC Adv 2021; 11:24359-24365. [PMID: 35479006 PMCID: PMC9036631 DOI: 10.1039/d1ra02435c] [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] [Received: 03/27/2021] [Accepted: 07/06/2021] [Indexed: 12/19/2022] Open
Abstract
Three new isomeric cobalt complexes of TPA (tris(2-pyridylmethyl)amine) based on methoxy substitution at the ortho, meta and para positions, respectively, were constructed and their photocatalytic proton reduction efficiencies were compared. It was found that there are good linear correlations with the Hammett constants of the substituents for the computed Co–N bond lengths, redox potentials of CoII/I and CoI/0 events, and the photocatalytic activities of the complexes. The ortho-substituted Co complex distinguished itself from the others remarkably in all these comparisons, demonstrating the presence of a steric effect besides the electronic effect. For other examined complexes, a stronger electron-donating substituent may lead to a higher hydrogen evolution efficiency, suggesting that the formation of a Co(iii) hydride intermediate is the rate-limiting step. Three isomeric Co complexes showed a significant substituent electronic effect in photocatalytic hydrogen production.![]()
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Affiliation(s)
- Xusheng Guo
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Chao Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Weibo Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Baowen Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Yuanjun Hou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Xuesong Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
| | - Qianxiong Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- P. R. China
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11
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Walaijai K, Cavill SA, Whitwood AC, Douthwaite RE, Perutz RN. Electrocatalytic Proton Reduction by a Cobalt(III) Hydride Complex with Phosphinopyridine PN Ligands. Inorg Chem 2020; 59:18055-18067. [PMID: 33275426 DOI: 10.1021/acs.inorgchem.0c02505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cobalt complexes with 2-(diisopropylphosphinomethyl)pyridine (PN) ligands have been synthesized with the aim of demonstrating electrocatalytic proton reduction to dihydrogen with a well-defined hydride complex of an Earth-abundant metal. Reactions of simple cobalt precursors with 2-(diisopropylphosphino-methyl)pyridine (PN) yield [CoII(PN)2(MeCN)][BF4]2 1, [CoIII(PN)2(H)(MeCN)][PF6]2 2, and [CoIII(PN)2(H)(Cl)][PF6] 3. Complexes 1 and 3 have been characterized crystallographically. Unusually for a bidentate PN ligand, all three exhibit geometries with mutually trans phosphorus and nitrogen ligands. Complex 1 exhibits a distorted square-pyramidal geometry with an axial MeCN ligand in a low-spin electronic state. In complexes 2 and 3, the PN ligands lie in a plane leaving the hydride trans to MeCN or chloride, respectively. The redox behavior of the three complexes has been studied by cyclic voltammetry at variable scan rates and by spectroelectrochemistry. A catalytic wave is observed in the presence of trifluoroacetic acid (TFA) at an applied potential close to the Co(II/I) couple of 1. Bulk electrolysis of 1, 2, or 3 at a potential of ca. -1.4 V vs E(Fc+/Fc) in the presence of TFA yields H2 with Faradaic yields close to 100%. A catalytic mechanism is proposed in which the pyridine moiety of a PN ligand acts as a pendant proton donor following opening of the chelate ring. Additional mechanisms may also operate, especially in the presence of high acid concentration where speciation changes.
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Affiliation(s)
- Khanittha Walaijai
- Department of Chemistry, University of York, York YO10 5DD, United Kingdom
| | - Stuart A Cavill
- Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - Adrian C Whitwood
- Department of Chemistry, University of York, York YO10 5DD, United Kingdom
| | | | - Robin N Perutz
- Department of Chemistry, University of York, York YO10 5DD, United Kingdom
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12
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Wang P, Liang G, Webster CE, Zhao X. Structure‐Functional Analysis of Hydrogen Production Catalyzed by Molecular Cobalt Complexes with Pentadentate Ligands in Aqueous Solutions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000564] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ping Wang
- Department of Chemistry The University of Memphis 38152 Memphis Tennessee USA
| | - Guangchao Liang
- Department of Chemistry University of Michigan 48109 Ann Arbor Michigan USA
- Department of Chemistry Mississippi State University 39762 Starkville Mississippi USA
| | - Charles Edwin Webster
- Department of Chemistry Mississippi State University 39762 Starkville Mississippi USA
| | - Xuan Zhao
- Department of Chemistry The University of Memphis 38152 Memphis Tennessee USA
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13
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Benazzi E, Coni VC, Boni M, Mazzaro R, Morandi V, Natali M. The role of the capping agent and nanocrystal size in photoinduced hydrogen evolution using CdTe/CdS quantum dot sensitizers. Dalton Trans 2020; 49:10212-10223. [PMID: 32666964 DOI: 10.1039/d0dt01195a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hydrogen production via light-driven water splitting is a key process in the context of solar energy conversion. In this respect, the choice of suitable light-harvesting units appears as a major challenge, particularly as far as stability issues are concerned. In this work, we report on the use of CdTe/CdS QDs as photosensitizers for light-assisted hydrogen evolution in combination with a nickel bis(diphosphine) catalyst (1) and ascorbate as the sacrificial electron donor. QDs of different sizes (1.7-3.4 nm) and with different capping agents (MPA, MAA, and MSA) have been prepared and their performance assessed in the above-mentioned photocatalytic reaction. Detailed photophysical studies have been also accomplished to highlight the charge transfer processes relevant to the photocatalytic reaction. Hydrogen evolution is observed with remarkable efficiencies when compared to common coordination compounds like Ru(bpy)32+ (where bpy = 2,2'-bipyridine) as light-harvesting units. Furthermore, the hydrogen evolution performance under irradiation is strongly determined by the nature of the capping agent and the QD size and can be related to the concentration of the surface defects within the semiconducting nanocrystal. Overall, the present results outline how QDs featuring large quantum yields and long lifetimes are desirable to achieve sustained hydrogen evolution upon irradiation and that a precise control of the structural and photophysical properties thus appears as a major requirement towards profitable photocatalytic applications.
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Affiliation(s)
- Elisabetta Benazzi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy.
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14
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Tuning the reactivity of cobalt-based H2 production electrocatalysts via the incorporation of the peripheral basic functionalities. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213335] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Gouré E, Gerey B, Molton F, Pécaut J, Clérac R, Thomas F, Fortage J, Collomb MN. Seven Reversible Redox Processes in a Self-Assembled Cobalt Pentanuclear Bis(triple-stranded helicate): Structural, Spectroscopic, and Magnetic Characterizations in the CoICoII4, CoII5, and CoII3CoIII2 Redox States. Inorg Chem 2020; 59:9196-9205. [DOI: 10.1021/acs.inorgchem.0c01102] [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)
- Eric Gouré
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | | | | | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, F-33600 Pessac, France
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16
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Giannoudis E, Benazzi E, Karlsson J, Copley G, Panagiotakis S, Landrou G, Angaridis P, Nikolaou V, Matthaiaki C, Charalambidis G, Gibson EA, Coutsolelos AG. Photosensitizers for H 2 Evolution Based on Charged or Neutral Zn and Sn Porphyrins. Inorg Chem 2020; 59:1611-1621. [PMID: 31940179 DOI: 10.1021/acs.inorgchem.9b01838] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a comparison between a series of zinc and tin porphyrins as photosensitizers for photochemical hydrogen evolution using cobaloxime complexes as molecular catalysts. Among all the chromophores tested, only the positively charged zinc porphyrin, [ZnTMePyP4+]Cl4, and the neutral tin porphyrin derivatives, Sn(OH)2TPyP, Sn(Cl2)TPP-[COOMe]4, and Sn(Cl2)TPP-[PO(OEt)2]4, were photocatalytically active. Hydrogen evolution was strongly affected by the pH value as well as the different concentrations of both the sensitizer and the catalyst. A comprehensive photophysical and electrochemical investigation was conducted in order to examine the mechanism of photocatalysis. The results derived from this study establish fundamental criteria with respect to the design and synthesis of porphyrin derivatives for their application as photosensitizers in photoinduced hydrogen evolution.
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Affiliation(s)
- Emmanouil Giannoudis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece.,Laboratoire de Chimie et Biologie des Métaux , UMR 5249 Université Grenoble Alpes, CNRS, CEA , 17 rue des Martyrs , F-38054 Grenoble Cedex 9 , France
| | - Elisabetta Benazzi
- Chemistry-School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne , NE1 7RU United Kingdom
| | - Joshua Karlsson
- Chemistry-School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne , NE1 7RU United Kingdom
| | - Graeme Copley
- Chemistry-School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne , NE1 7RU United Kingdom
| | - Stylianos Panagiotakis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Georgios Landrou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Panagiotis Angaridis
- Department of Chemistry , Aristotle University of Thessaloniki , Thessaloniki 54124 , Greece
| | - Vasilis Nikolaou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Chrysanthi Matthaiaki
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Georgios Charalambidis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Elizabeth A Gibson
- Chemistry-School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne , NE1 7RU United Kingdom
| | - Athanassios G Coutsolelos
- Laboratory of Bioinorganic Chemistry, Department of Chemistry , University of Crete , Voutes Campus , 70013 Heraklion , Crete , Greece
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17
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Queyriaux N, Sun D, Fize J, Pécaut J, Field MJ, Chavarot-Kerlidou M, Artero V. Electrocatalytic Hydrogen Evolution with a Cobalt Complex Bearing Pendant Proton Relays: Acid Strength and Applied Potential Govern Mechanism and Stability. J Am Chem Soc 2019; 142:274-282. [PMID: 31760743 DOI: 10.1021/jacs.9b10407] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
[Co(bapbpy)Cl]+ (bapbpy: 6,6'-bis(2-aminopyridyl)-2,2'-bipyridine) is a polypyridyl cobalt(II) complex bearing both a redox-active bipyridine ligand and pendant proton relays. This compound catalyzes electro-assisted H2 evolution in DMF with distinct mechanisms depending on the strength of the acid used as the proton source (pKa values ranging from 3.4 to 13.5 in DMF) and the applied potential. Electrochemical studies combining cyclic voltammetry and bulk electrolysis measurements enabled one to bring out four distinct catalytic processes. Where applicable, relevant kinetic information were obtained using either foot-of-the-wave analysis (FOWA) or analytical treatment of bulk electrolysis experiments. Among the different catalytic pathways identified in this study, a clear relationship between the catalyst performances and stability was evidenced. These results draw attention to a number of interesting considerations and may help in the development of future adequately designed catalysts.
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Affiliation(s)
- Nicolas Queyriaux
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
| | - Dongyue Sun
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
| | - Jennifer Fize
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA , CNRS, IRIG, SYMMES, UMR 5819 Equipe Chimie Interface Biologie pour l'Environnement la Santé et la Toxicologie, F-38054 Cedex 9 Grenoble , France
| | - Martin J Field
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
| | - Murielle Chavarot-Kerlidou
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
| | - Vincent Artero
- Univ. Grenoble Alpes , CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, UMR 5249, 17 rue des Martyrs, 38000 Grenoble , France
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18
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Panagiotakis S, Landrou G, Nikolaou V, Putri A, Hardré R, Massin J, Charalambidis G, Coutsolelos AG, Orio M. Efficient Light-Driven Hydrogen Evolution Using a Thiosemicarbazone-Nickel (II) Complex. Front Chem 2019; 7:405. [PMID: 31316966 PMCID: PMC6610430 DOI: 10.3389/fchem.2019.00405] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 05/20/2019] [Indexed: 11/23/2022] Open
Abstract
In the following work, we carried out a systematic study investigating the behavior of a thiosemicarbazone-nickel (II) complex (NiTSC-OMe) as a molecular catalyst for photo-induced hydrogen production. A comprehensive comparison regarding the combination of three different chromophores with this catalyst has been performed, using [Ir(ppy)2(bpy)]PF6, [Ru(bpy)3]Cl2 and [ZnTMePy]PCl4 as photosensitizers. Thorough evaluation of the parameters affecting the hydrogen evolution experiments (i.e., concentration, pH, solvent nature, and ratio), has been performed in order to probe the most efficient photocatalytic system, which was comprised by NiTSC-OMe and [Ir(ppy)2(bpy)]PF6 as catalyst and chromophore, respectively. The electrochemical together with the photophysical investigation clarified the properties of this photocatalytic system and allowed us to propose a possible reaction mechanism for hydrogen production.
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Affiliation(s)
- Stylianos Panagiotakis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Georgios Landrou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Vasilis Nikolaou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Anisa Putri
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Renaud Hardré
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Julien Massin
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Georgios Charalambidis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Athanassios G Coutsolelos
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Maylis Orio
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
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19
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Gueret R, Castillo CE, Rebarz M, Thomas F, Sliwa M, Chauvin J, Dautreppe B, Pécaut J, Fortage J, Collomb MN. Cobalt(II) Pentaaza-Macrocyclic Schiff Base Complex as Catalyst for Light-Driven Hydrogen Evolution in Water: Electrochemical Generation and Theoretical Investigation of the One-Electron Reduced Species. Inorg Chem 2019; 58:9043-9056. [DOI: 10.1021/acs.inorgchem.9b00447] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Robin Gueret
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | | | - Mateusz Rebarz
- Université de Lille, CNRS, UMR 8516, LASIR, Laboratoire de Spectrochimie Infrarouge et Raman, F59 000 Lille, France
| | | | - Michel Sliwa
- Université de Lille, CNRS, UMR 8516, LASIR, Laboratoire de Spectrochimie Infrarouge et Raman, F59 000 Lille, France
| | | | - Baptiste Dautreppe
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
- Univ. Grenoble Alpes, CEA, CNRS, IRI, SYMMES 38000 Grenoble, France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRI, SYMMES 38000 Grenoble, France
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20
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21
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Benkada A, Poschmann M, Näther C, Bensch W. New Transition Metal Oxo-Thiostannate: Synthesis, Characterization, and Investigation of its Photocatalytic Properties. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800475] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Assma Benkada
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 Kiel Germany
| | - Michael Poschmann
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 Kiel Germany
| | - Christian Näther
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 Kiel Germany
| | - Wolfgang Bensch
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 Kiel Germany
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22
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Lentz C, Schott O, Auvray T, Hanan GS, Elias B. Design and photophysical studies of iridium(iii)–cobalt(iii) dyads and their application for dihydrogen photo-evolution. Dalton Trans 2019; 48:15567-15576. [DOI: 10.1039/c9dt01989h] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report several new dyads constituted of cationic iridium(iii) photosensitizers and cobalt(iii) catalyst connected via free pendant pyridine on the photosensitizers.
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Affiliation(s)
- Cédric Lentz
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Olivier Schott
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Thomas Auvray
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Garry S. Hanan
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
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23
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A cobalt complex, a highly efficient catalyst for electro- and photochemical driven hydrogen generation in purely aqueous media. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Eckenhoff WT. Molecular catalysts of Co, Ni, Fe, and Mo for hydrogen generation in artificial photosynthetic systems. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.11.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Castillo CE, Stoll T, Sandroni M, Gueret R, Fortage J, Kayanuma M, Daniel C, Odobel F, Deronzier A, Collomb MN. Electrochemical Generation and Spectroscopic Characterization of the Key Rhodium(III) Hydride Intermediates of Rhodium Poly(bipyridyl) H2-Evolving Catalysts. Inorg Chem 2018; 57:11225-11239. [PMID: 30129361 DOI: 10.1021/acs.inorgchem.8b01811] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Thibaut Stoll
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Martina Sandroni
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
- Univ. Grenoble Alpes, CEA, CNRS, INAC-SyMMES 38000 Grenoble, France
| | - Robin Gueret
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Jérôme Fortage
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Megumi Kayanuma
- Laboratoire de Chimie Quantique, Institut de Chimie Strasbourg, UMR 7177 CNRS/UdS, 1-4 Rue Blaise pascal, 67037 Strasbourg, France
| | - Chantal Daniel
- Laboratoire de Chimie Quantique, Institut de Chimie Strasbourg, UMR 7177 CNRS/UdS, 1-4 Rue Blaise pascal, 67037 Strasbourg, France
| | - Fabrice Odobel
- CEISAM, Université de Nantes, CNRS, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
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26
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Panneerselvam M, Jaccob M. Role of Anation on the Mechanism of Proton Reduction Involving a Pentapyridine Cobalt Complex: A Theoretical Study. Inorg Chem 2018; 57:8116-8127. [PMID: 29969023 DOI: 10.1021/acs.inorgchem.8b00286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Kinetic and thermodynamic aspects of proton reduction involving pentapyridine cobalt(II) complex were investigated with the help of quantum chemical calculations. Free energy profile of all possible mechanistic routes for proton reduction was constructed with the consideration of both anation and solvent bound pathways. The computed free energy profile shows that acetate ion plays a significant role in modulating the kinetic aspects of Co(III)-hydride formation which is found to be the key intermediate for proton reduction. Upon replacing solvent by acetate ion, one electron reduction and protonation of CoI species become more rapid along with slow displacement reaction. Most favorable pathways for hydrogen evolution from Co(III)-hydride species is also investigated. Among the four possible pathways, reduction followed by protonation of Co(III)-hydride (RPP) is found to be the most feasible pathway. On the basis of QTAIM and NBO analyses, the electronic origin of most favorable pathway is explained. The basicity of cobalt center along with thermodynamic stability of putative CoIII/II-H species is essentially a prime factor in deciding the most favorable pathway for hydrogen evolution. Our computed results are in good agreement with experimental observations and also provided adequate information to design cobalt-based molecular electrocatalysts for proton reduction in future.
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Affiliation(s)
- Murugesan Panneerselvam
- Department of Chemistry , Loyola College , Chennai 600 034 , Tamil Nadu , India.,Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE) , Loyola College , Chennai 600 034 , Tamil Nadu , India
| | - Madhavan Jaccob
- Department of Chemistry , Loyola College , Chennai 600 034 , Tamil Nadu , India.,Computational Chemistry Laboratory, Loyola Institute of Frontier Energy (LIFE) , Loyola College , Chennai 600 034 , Tamil Nadu , India
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27
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Wang P, Liang G, Reddy MR, Long M, Driskill K, Lyons C, Donnadieu B, Bollinger JC, Webster CE, Zhao X. Electronic and Steric Tuning of Catalytic H2 Evolution by Cobalt Complexes with Pentadentate Polypyridyl-Amine Ligands. J Am Chem Soc 2018; 140:9219-9229. [DOI: 10.1021/jacs.8b05108] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ping Wang
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Guangchao Liang
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - M. Ramana Reddy
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Melissa Long
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Kandria Driskill
- Department of Chemistry & Department of Biological Sciences, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Christian Lyons
- Department of Chemistry, Christian Brother University, Memphis, Tennessee 38104, United States
| | - Bruno Donnadieu
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - John C. Bollinger
- Structural Biology X-Ray Diffraction Laboratory, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
| | - Charles Edwin Webster
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Xuan Zhao
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
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28
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Hogue RW, Schott O, Hanan GS, Brooker S. A Smorgasbord of 17 Cobalt Complexes Active for Photocatalytic Hydrogen Evolution. Chemistry 2018; 24:9820-9832. [DOI: 10.1002/chem.201800396] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Ross W. Hogue
- Department of Chemistry and MacDiarmid Institute for, Advanced Materials and Nanotechnology; University of Otago; P.O. Box 56 Dunedin 9054 New Zealand
| | - Olivier Schott
- Département de Chimie; Université de Montréal; 2900 Boulevard Edouard-Montpetit Montréal Quebec H3T 1J4 Canada
| | - Garry S. Hanan
- Département de Chimie; Université de Montréal; 2900 Boulevard Edouard-Montpetit Montréal Quebec H3T 1J4 Canada
| | - Sally Brooker
- Department of Chemistry and MacDiarmid Institute for, Advanced Materials and Nanotechnology; University of Otago; P.O. Box 56 Dunedin 9054 New Zealand
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29
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Gueret R, Poulard L, Oshinowo M, Chauvin J, Dahmane M, Dupeyre G, Lainé PP, Fortage J, Collomb MN. Challenging the [Ru(bpy)3]2+ Photosensitizer with a Triazatriangulenium Robust Organic Dye for Visible-Light-Driven Hydrogen Production in Water. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04000] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robin Gueret
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Laurélie Poulard
- Univ. Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J-A de Baïf, 75013 Paris, France
| | | | - Jérôme Chauvin
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Mustapha Dahmane
- Univ. Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J-A de Baïf, 75013 Paris, France
| | - Grégory Dupeyre
- Univ. Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J-A de Baïf, 75013 Paris, France
| | - Philippe P. Lainé
- Univ. Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J-A de Baïf, 75013 Paris, France
| | - Jérôme Fortage
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
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30
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Call A, Lloret-Fillol J. Enhancement and control of the selectivity in light-driven ketone versus water reduction using aminopyridine cobalt complexes. Chem Commun (Camb) 2018; 54:9643-9646. [DOI: 10.1039/c8cc04239j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly selective light-driven reduction of aromatic ketones versus water reduction could be achieved by ligand design.
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Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- Avinguda Països Catalans 16
- 43007 Tarragona
- Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- Avinguda Països Catalans 16
- 43007 Tarragona
- Spain
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31
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Call A, Franco F, Kandoth N, Fernández S, González-Béjar M, Pérez-Prieto J, Luis JM, Lloret-Fillol J. Understanding light-driven H 2 evolution through the electronic tuning of aminopyridine cobalt complexes. Chem Sci 2017; 9:2609-2619. [PMID: 29675253 PMCID: PMC5892349 DOI: 10.1039/c7sc04328g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/18/2017] [Indexed: 11/25/2022] Open
Abstract
Electronic effects provide a general mechanistic scenario for rationalizing photocatalytic water reduction activity with aminopyridine cobalt complexes.
A new family of cobalt complexes with the general formula [CoII(OTf)2(Y,XPyMetacn)] (1R, Y,XPyMetacn = 1-[(4-X-3,5-Y-2-pyridyl)methyl]-4,7-dimethyl-1,4,7-triazacyclononane, (X = CN (1CN), CO2Et (1CO2Et), Cl (1Cl), H (1H), NMe2 (1NMe2)) where (Y = H, and X = OMe when Y = Me (1DMM)) is reported. We found that the electronic tuning of the Y,XPyMetacn ligand not only has an impact on the electronic and structural properties of the metal center, but also allows for a systematic water-reduction-catalytic control. In particular, the increase of the electron-withdrawing character of the pyridine moiety promotes a 20-fold enhancement of the catalytic outcome. By UV-Vis spectroscopy, luminescence quenching studies and Transient Absorption Spectroscopy (TAS), we have studied the direct reaction of the photogenerated [IrIII(ppy)2(bpy˙–)] (PSIr) species to form the elusive CoI intermediates. In particular, our attention is focused on the effect of the ligand architecture in this elemental step of the catalytic mechanism. Finally, kinetic isotopic experiments together with DFT calculations provide complementary information about the rate-determining step of the catalytic cycle.
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Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Noufal Kandoth
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Sergio Fernández
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - María González-Béjar
- Instituto de Ciencia Molecular (ICMol) , Universidad de Valencia , C/Catedrático José Beltrán 2, Paterna , E46980 Valencia , Spain
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICMol) , Universidad de Valencia , C/Catedrático José Beltrán 2, Paterna , E46980 Valencia , Spain
| | - Josep M Luis
- Institut de Química Computacional i Catàlisi (IQCC) , Departament de Química , Universitat de Girona , Campus Montilivi , E17071 Girona , Catalonia , Spain
| | - 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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33
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Schnidrig S, Bachmann C, Müller P, Weder N, Spingler B, Joliat-Wick E, Mosberger M, Windisch J, Alberto R, Probst B. Structure-Activity and Stability Relationships for Cobalt Polypyridyl-Based Hydrogen-Evolving Catalysts in Water. CHEMSUSCHEM 2017; 10:4570-4580. [PMID: 29052339 DOI: 10.1002/cssc.201701511] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/14/2017] [Indexed: 06/07/2023]
Abstract
A series of eight new and three known cobalt polypyridyl-based hydrogen-evolving catalysts (HECs) with distinct electronic and structural differences are benchmarked in photocatalytic runs in water. Methylene-bridged bis-bipyridyl is the preferred scaffold, both in terms of stability and rate. For a cobalt complex of the tetradentate methanol-bridged bispyridyl-bipyridyl complex [CoII Br(tpy)]Br, a detailed mechanistic picture is obtained by combining electrochemistry, spectroscopy, and photocatalysis. In the acidic branch, a proton-coupled electron transfer, assigned to formation of CoIII -H, is found upon reduction of CoII , in line with a pKa (CoIII -H) of approximately 7.25. Subsequent reduction (-0.94 V vs. NHE) and protonation close the catalytic cycle. Methoxy substitution on the bipyridyl scaffold results in the expected cathodic shift of the reduction, but fails to change the pKa (CoIII -H). An analysis of the outcome of the benchmarking in view of this postulated mechanism is given along with an outlook for design criteria for new generations of catalysts.
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Affiliation(s)
- Stephan Schnidrig
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Cyril Bachmann
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Peter Müller
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Nicola Weder
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Bernhard Spingler
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Evelyne Joliat-Wick
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Mathias Mosberger
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Johannes Windisch
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
| | - Benjamin Probst
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland
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34
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Call A, Casadevall C, Acuña-Parés F, Casitas A, Lloret-Fillol J. Dual cobalt-copper light-driven catalytic reduction of aldehydes and aromatic ketones in aqueous media. Chem Sci 2017; 8:4739-4749. [PMID: 30155221 PMCID: PMC6100254 DOI: 10.1039/c7sc01276d] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/04/2017] [Indexed: 12/11/2022] Open
Abstract
A dual catalytic system based on earth-abundant elements reduces aromatic ketones and aldehydes to alcohols in aqueous media under visible light. An unprecedented selectivity for the reduction of aromatic ketones versus aliphatic aldehydes is reported.
We present an efficient, general, fast, and robust light-driven methodology based on earth-abundant elements to reduce aryl ketones, and both aryl and aliphatic aldehydes (up to 1400 TON). The catalytic system consists of a robust and well-defined aminopyridyl cobalt complex active for photocatalytic water reduction and the [Cu(bathocuproine)(Xantphos)](PF6) photoredox catalyst. The dual cobalt–copper system uses visible light as the driving-force and H2O and an electron donor (Et3N or iPr2EtN) as the hydride source. The catalytic system operates in aqueous mixtures (80–60% water) with high selectivity towards the reduction of organic substrates (>2000) vs. water reduction, and tolerates O2. High selectivity towards the hydrogenation of aryl ketones is observed in the presence of terminal olefins, aliphatic ketones, and alkynes. Remarkably, the catalytic system also shows unique selectivity for the reduction of acetophenone in the presence of aliphatic aldehydes. The catalytic system provides a simple and convenient method to obtain α,β-deuterated alcohols. Both the observed reactivity and the DFT modelling support a common cobalt hydride intermediate. The DFT modelled energy profile for the [Co–H] nucleophilic attack to acetophenone and water rationalises the competence of [CoII–H] to reduce acetophenone in the presence of water. Mechanistic studies suggest alternative mechanisms depending on the redox potential of the substrate. These results show the potential of the water reduction catalyst [Co(OTf)(Py2Tstacn)](OTf) (1), (Py2Tstacn = 1,4-di(picolyl)-7-(p-toluenesulfonyl)-1,4,7-triazacyclononane, OTf = trifluoromethanesulfonate anion) to develop light-driven selective organic transformations and fine solar chemicals.
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Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Ferran Acuña-Parés
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Alicia Casitas
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - 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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35
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Kagalwala HN, Chirdon DN, Mills IN, Budwal N, Bernhard S. Light-Driven Hydrogen Generation from Microemulsions Using Metallosurfactant Catalysts and Oxalic Acid. Inorg Chem 2017; 56:10162-10171. [DOI: 10.1021/acs.inorgchem.7b00463] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Husain N. Kagalwala
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Danielle N. Chirdon
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Isaac N. Mills
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Nikita Budwal
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Stefan Bernhard
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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36
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Lucarini F, Pastore M, Vasylevskyi S, Varisco M, Solari E, Crochet A, Fromm KM, Zobi F, Ruggi A. Heptacoordinate CoII
Complex: A New Architecture for Photochemical Hydrogen Production. Chemistry 2017; 23:6768-6771. [DOI: 10.1002/chem.201701427] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Fiorella Lucarini
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | | | - Serhii Vasylevskyi
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | | | - Euro Solari
- Institut des Sciences et Ingénierie Chimique; École PolytechniqueFédérale de Lausanne (EPFL); Lausanne Switzerland
| | - Aurelien Crochet
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | - Katharina M. Fromm
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | - Fabio Zobi
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | - Albert Ruggi
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
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37
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Natali M. Elucidating the Key Role of pH on Light-Driven Hydrogen Evolution by a Molecular Cobalt Catalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03087] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mirco Natali
- Department of Chemical and
Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 17-19, 44121 Ferrara, Italy
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38
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Carmo dos Santos NA, Natali M, Badetti E, Wurst K, Licini G, Zonta C. Cobalt, nickel, and iron complexes of 8-hydroxyquinoline-di(2-picolyl)amine for light-driven hydrogen evolution. Dalton Trans 2017; 46:16455-16464. [DOI: 10.1039/c7dt02666h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Novel first-row transition metal complexes based on the 8-hydroxyquinoline-di(2-picolyl)amine ligand were prepared and tested as potential HECs in light-driven experiments.
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Affiliation(s)
| | - Mirco Natali
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- and Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SolarChem)
- sez. di Ferrara
- 44121 Ferrara
| | - Elena Badetti
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Klaus Wurst
- Institute of General
- Inorganic and Theoretical Chemistry
- University of Innsbruck
- A-6020 Innsbruck
- Austria
| | - Giulia Licini
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Cristiano Zonta
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
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39
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Zhao X, Wang P, Long M. Electro- and Photocatalytic Hydrogen Production by Molecular Cobalt Complexes With Pentadentate Ligands. COMMENT INORG CHEM 2016. [DOI: 10.1080/02603594.2016.1266618] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xuan Zhao
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
| | - Ping Wang
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
| | - Melissa Long
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
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40
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Natali M, Badetti E, Deponti E, Gamberoni M, Scaramuzzo FA, Sartorel A, Zonta C. Photoinduced hydrogen evolution with new tetradentate cobalt(ii) complexes based on the TPMA ligand. Dalton Trans 2016; 45:14764-73. [DOI: 10.1039/c6dt01705c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
New cobalt(ii) complexes based on the TPMA ligand have been synthesized and characterized as molecular catalysts for photoinduced hydrogen evolution.
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Affiliation(s)
- Mirco Natali
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- 44121 Ferrara
- Italy
- Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SolarChem)
| | - Elena Badetti
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Elisa Deponti
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- 44121 Ferrara
- Italy
- Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SolarChem)
| | - Marta Gamberoni
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- 44121 Ferrara
- Italy
- Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SolarChem)
| | | | - Andrea Sartorel
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Cristiano Zonta
- Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
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