1
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Mishra A, Mishra GK, Anamika, Singh N, Kant R, Kumar K. The rigidity and chelation effect of ligands on the hydrogen evolution reaction catalyzed by Ni(II) complexes. Dalton Trans 2024; 53:1680-1690. [PMID: 38167900 DOI: 10.1039/d3dt03932c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
With increasing interest in nickel-based electrocatalysts, three heteroleptic Ni(II) dithiolate complexes with the general formula [Ni(II)L(L')2] (1-3), L = 2-(methylene-1,1'-dithiolato)-5,5'-dimethylcyclohexane-1,3-dione and L' = triphenylphosphine (1), 1,1'-bis(diphenylphosphino)ferrocene (DPPF) (2), and 1,2-bis(diphenylphosphino)ethane (DPPE) (3), have been synthesized and characterized by various spectroscopic techniques (UV-vis, IR, 1H, and 31P{1H} NMR) as well as the electrochemical method. The molecular structure of complex 2 has also been determined by single-crystal X-ray crystallography. The crystal structure of complex 2 reveals a distorted square planar geometry around the nickel metal ion with a NiP2S2 core. The cyclic voltammograms reveal a small difference in the redox properties of complexes (ΔE° = 130 mV) while the difference in the catalytic half-wave potential becomes substantial (ΔEcat/2 = 670 mV) in the presence of 15 mM CF3COOH. The common S^S-dithiolate ligand provides stability, while the rigidity effect of other ligands (DPPE (3) > DPPF (2) > PPh3 (1)) regulates the formation of the transition state, resulting in the NiIII-H intermediate in the order of 1 > 2 > 3. The foot-of-the-wave analysis supports the widely accepted ECEC mechanism for Ni-based complexes with the first protonation step as a rate-determining step. The electrocatalytic proton reduction activity follows in the order of complex 1 > 2 > 3. The comparatively lower overpotential and higher turnover frequency of complex 1 are attributed to the flexibility of the PPh3 ligand, which favours the easy formation of a transition state.
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Affiliation(s)
- Anjali Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | | | - Anamika
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Rama Kant
- Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Kamlesh Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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2
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de Melo APL, Bresolin L, Tirloni B, de Farias RL, de Oliveira AB. Synthesis, crystal structure and Hirshfeld analysis of trans-bis-(2-{1-[(6 R, S)-3,5,5,6,8,8-hexa-methyl-5,6,7,8-tetra-hydronaphthalen-2-yl]ethyl-idene}- N-methyl-hydrazinecarbo-thio-amidato-κ 2N2, S)palladium(II) ethanol monosolvate. Acta Crystallogr E Crystallogr Commun 2023; 79:1166-1172. [PMID: 38313134 PMCID: PMC10833400 DOI: 10.1107/s2056989023009908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 11/15/2023] [Indexed: 02/06/2024]
Abstract
The reaction between the (R,S)-fixolide 4-methyl-thio-semicarbazone and PdII chloride yielded the title compound, [Pd(C20H30N3S)2]·C2H6O {common name: trans-bis-[(R,S)-fixolide 4-methyl-thio-semicarbazonato-κ2 N 2 S]palladium(II) ethanol monosolvate}. The asymmetric unit of the title compound consists of one bis-thio-semicarbazonato PdII complex and one ethanol solvent mol-ecule. The thio-semicarbazononato ligands act as metal chelators with a trans configuration in a distorted square-planar geometry. A C-H⋯S intra-molecular inter-action, with graph-set motif S(6), is observed and the coordination sphere resembles a hydrogen-bonded macrocyclic environment. Additionally, one C-H⋯Pd anagostic inter-action can be suggested. Each ligand is disordered over the aliphatic ring, which adopts a half-chair conformation, and two methyl groups [s.o.f. = 0.624 (2):0.376 (2)]. The disorder includes the chiral carbon atoms and, remarkably, one ligand has the (R)-isomer with the highest s.o.f. value atoms, while the other one shows the opposite, the atoms with the highest s.o.f. value are associated with the (S)-isomer. The N-N-C(=S)-N fragments of the ligands are approximately planar, with the maximum deviations from the mean plane through the selected atoms being 0.0567 (1) and -0.0307 (8) Å (r.m.s.d. = 0.0403 and 0.0269 Å) and the dihedral angle with the respective aromatic rings amount to 46.68 (5) and 50.66 (4)°. In the crystal, the complexes are linked via pairs of N-H⋯S inter-actions, with graph-set motif R 2 2(8), into centrosymmetric dimers. The dimers are further connected by centrosymmetric pairs of ethanol mol-ecules, building mono-periodic hydrogen-bonded ribbons along [011]. The Hirshfeld surface analysis indicates that the major contributions for the crystal cohesion are [atoms with highest/lowest s.o.f.s considered separately]: H⋯H (81.6/82.0%), H⋯C/C⋯H (6.5/6.4%), H⋯N/N⋯H (5.2/5.0%) and H⋯S/S⋯H (5.0/4.9%).
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Affiliation(s)
- Ana Paula Lopes de Melo
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Av. Itália km 08, Campus Carreiros, 96203-900 Rio Grande-RS, Brazil
| | - Leandro Bresolin
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Av. Itália km 08, Campus Carreiros, 96203-900 Rio Grande-RS, Brazil
| | - Bárbara Tirloni
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima 1000, Campus Universitário, 97105-900 Santa Maria-RS, Brazil
| | - Renan Lira de Farias
- Departamento de Química, Pontífícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, 22451-900 Rio de Janeiro-RJ, Brazil
| | - Adriano Bof de Oliveira
- Departamento de Química, Universidade Federal de Sergipe, Av. Marcelo Deda Chagas s/n, Campus Universitário, 49107-230 São Cristóvão-SE, Brazil
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3
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Oliveira AB, Bresolin L, Beck J, Daniels J. 2-{3-Methyl-2-[(2 Z)-pent-2-en-1-yl]cyclo-pent-2-en-1-yl-idene}- N-phenylhydrazinecarbo-thio-amide. IUCRDATA 2023; 8:x230971. [PMID: 38313069 PMCID: PMC10833128 DOI: 10.1107/s2414314623009719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 02/06/2024] Open
Abstract
The hydro-chloric acid-catalyzed equimolar reaction between cis-jasmone and 4-phenyl-thio-semicarbazide yielded the title compound, C18H23N3S (common name: cis-jasmone 4-phenyl-thio-semicarbazone). Concerning the hydrogen bonding, an N-H⋯N intra-molecular inter-action is observed, forming a ring with graph-set motif S(5). In the crystal, the mol-ecules are connected into centrosymmetric dimers by pairs of N-H⋯S and C-H⋯S inter-actions, forming rings of graph-set motifs R 2 2(8) and R 2 1(7), with the sulfur atoms acting as double acceptors. The thio-semicarbazone entity is approximately planar, with the maximum deviation from the mean plane through the N/N/C/S/N atoms being 0.0376 (9) Å (the r.m.s.d. amounts to 0.0234 Å). The mol-ecule is substantially twisted as indicated by the dihedral angle between the thio-semicarbazone fragment and the phenyl ring, which amounts to 56.1 (5)°, and because of the jasmone fragment, which bears a chain with sp 3-hybridized carbon atoms in the structure. The Hirshfeld surface analysis indicates that the major contributions for the crystal cohesion are: H⋯H (65.3%), H⋯C/C⋯H (16.2%), H⋯S/S⋯H (10.9%) and H⋯N/N⋯H (5.5%).
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Affiliation(s)
- Adriano Bof Oliveira
- Departamento de Química, Universidade Federal de Sergipe, Av. Marcelo Deda Chagas s/n, Campus Universitário, 49107-230 São Cristóvão-SE, Brazil
| | - Leandro Bresolin
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Av. Itália km 08, Campus Carreiros, 96203-900 Rio Grande-RS, Brazil
| | - Johannes Beck
- Institut für Anorganische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Jörg Daniels
- Institut für Anorganische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
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4
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Papadakis M, Barrozo A, Delmotte L, Straistari T, Shova S, Réglier M, Krewald V, Bertaina S, Hardré R, Orio M. How Metal Nuclearity Impacts Electrocatalytic H2 Production in Thiocarbohydrazone-Based Complexes. INORGANICS 2023. [DOI: 10.3390/inorganics11040149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Thiocarbohydrazone-based catalysts feature ligands that are potentially electrochemically active. From the synthesis point of view, these ligands can be easily tailored, opening multiple strategies for optimization, such as using different substituent groups or metal substitution. In this work, we show the possibility of a new strategy, involving the nuclearity of the system, meaning the number of metal centers. We report the synthesis and characterization of a trinuclear nickel-thiocarbohydrazone complex displaying an improved turnover rate compared with its mononuclear counterpart. We use DFT calculations to show that the mechanism involved is metal-centered, unlike the metal-assisted ligand-centered mechanism found in the mononuclear complex. Finally, we show that two possible mechanisms can be assigned to this catalyst, both involving an initial double reduction of the system.
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Affiliation(s)
- Michael Papadakis
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Alexandre Barrozo
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Léa Delmotte
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Tatiana Straistari
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Sergiu Shova
- Institute of Macromolecular Chemistry Petru Poni, 700487 Iasi, Romania
| | - Marius Réglier
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Vera Krewald
- Department of Chemistry, Theoretical Chemistry, Technical University Darmstadt, 64289 Darmstadt, Germany
| | - Sylvain Bertaina
- Aix-Marseille Univ, CNRS, IN2MP UMR 7334, 13397 Marseille, France
| | - Renaud Hardré
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Maylis Orio
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
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5
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Tang HM, Fan WY. Transition Metal Pyrithione Complexes (Ni, Mn, Fe, and Co) as Electrocatalysts for Proton Reduction of Acetic Acid. ACS OMEGA 2023; 8:7234-7241. [PMID: 36844539 PMCID: PMC9948554 DOI: 10.1021/acsomega.3c00412] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 06/01/2023]
Abstract
A series of mononuclear first-row transition metal pyrithione M(pyr) n complexes (M = Ni(II), Mn(II), n = 2; M = Co(III), Fe(III), n = 3) have been prepared from the reaction of the corresponding metal salt with the sodium salt of pyrithione. Using cyclic voltammetry, the complexes have been shown to behave as proton reduction electrocatalysts albeit with varying efficiencies in the presence of acetic acid as the proton source in acetonitrile. The nickel complex displays the optimal overall catalytic performance with an overpotential of 0.44 V. An ECEC mechanism is suggested for the nickel-catalyzed system based on the experimental data and supported by density functional theory calculations.
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6
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Phipps CA, Hofsommer DT, Toda MJ, Nkurunziza F, Shah B, Spurgeon JM, Kozlowski PM, Buchanan RM, Grapperhaus CA. Ligand-Centered Hydrogen Evolution with Ni(II) and Pd(II)DMTH. Inorg Chem 2022; 61:9792-9800. [PMID: 35687329 DOI: 10.1021/acs.inorgchem.2c01326] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, we report a pair of electrocatalysts for the hydrogen evolution reaction (HER) based on the noninnocent ligand diacetyl-2-(4-methyl-3-thiosemicarbazone)-3-(2-pyridinehydrazone) (H2DMTH, H2L1). The neutral complexes NiL1 and PdL1 were synthesized and characterized by spectroscopic and electrochemical methods. The complexes contain a non-coordinating, basic hydrazino nitrogen that is protonated during the HER. The pKa of this nitrogen was determined by spectrophotometric titration in acetonitrile to be 12.71 for NiL1 and 13.03 for PdL1. Cyclic voltammograms of both NiL1 and PdL1 in acetonitrile exhibit diffusion-controlled, reversible ligand-centered events at -1.83 and -1.79 V (vs ferrocenium/ferrocene) for NiL1 and PdL1, respectively. A quasi-reversible, ligand-centered event is observed at -2.43 and -2.34 V for NiL1 and PdL1, respectively. The HER activity in acetonitrile was evaluated using a series of neutral and cationic acids for each catalyst. Kinetic isotope effect (KIE) studies suggest that the precatalytic event observed is associated with a proton-coupled electron transfer step. The highest turnover frequency values observed were 6150 s-1 at an overpotential of 0.74 V for NiL1 and 8280 s-1 at an overpotential of 0.44 V for PdL1. Density functional theory (DFT) computations suggest both complexes follow a ligand-centered HER mechanism where the metals remain in the +2 oxidation state.
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Affiliation(s)
- Christine A Phipps
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Dillon T Hofsommer
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Megan J Toda
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Francois Nkurunziza
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bhoomi Shah
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Joshua M Spurgeon
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, Kentucky 40292, United States
| | - Pawel M Kozlowski
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Robert M Buchanan
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Craig A Grapperhaus
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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7
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Du J, Yang H, Wang CL, Zhan SZ. Synthesis, structure, characterization, EPR investigation and catalytic behavior for hydrogen evolution of a bis(thiosemicarbazonato)-palladium complex. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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8
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Ladomenou K, Papadakis M, Landrou G, Giorgi M, Drivas C, Kennou S, Hardré R, Massin J, Coutsolelos AG, Orio M. Nickel Complexes and Carbon Dots for Efficient Light‐Driven Hydrogen Production. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kalliopi Ladomenou
- Laboratory of Bioinorganic Chemistry Chemistry Department University of Crete PO Box 2208 71003 Heraklion Crete Greece
| | | | - Georgios Landrou
- Laboratory of Bioinorganic Chemistry Chemistry Department University of Crete PO Box 2208 71003 Heraklion Crete Greece
| | - Michel Giorgi
- Aix Marseille Univ, CNRS, Spectropole FR1739 Marseille France
| | - Charalambos Drivas
- Surface Science Laboratory Chemical Engineering Department University of Patras 26504 Patras Greece
| | - Stella Kennou
- Surface Science Laboratory Chemical Engineering Department University of Patras 26504 Patras Greece
| | - Renaud Hardré
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Julien Massin
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Athanassios G. Coutsolelos
- Laboratory of Bioinorganic Chemistry Chemistry Department University of Crete PO Box 2208 71003 Heraklion Crete Greece
| | - Maylis Orio
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
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9
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Orio M, Pantazis DA. Successes, challenges, and opportunities for quantum chemistry in understanding metalloenzymes for solar fuels research. Chem Commun (Camb) 2021; 57:3952-3974. [DOI: 10.1039/d1cc00705j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Overview of the rich and diverse contributions of quantum chemistry to understanding the structure and function of the biological archetypes for solar fuel research, photosystem II and hydrogenases.
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Affiliation(s)
- Maylis Orio
- Aix-Marseille Université
- CNRS
- iSm2
- Marseille
- France
| | - Dimitrios A. Pantazis
- Max-Planck-Institut für Kohlenforschung
- Kaiser-Wilhelm-Platz 1
- 45470 Mülheim an der Ruhr
- Germany
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10
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Lorraine SC, Lawrence MA, Celestine M, Holder AA. Electrochemical response of a Ru(II) benzothiazolyl-2-pyridinecarbothioamide pincer towards carbon dioxide and transfer hydrogenation of aryl ketones in air. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128829] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Cuzan‐Munteanu O, Sirbu D, Giorgi M, Shova S, Gibson EA, Réglier M, Orio M, Martins LMDRS, Benniston AC. Neutral Lipophilic Palladium(II) Complexes and their Applications in Electrocatalytic Hydrogen Production and C‐C Coupling Reactions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Olesea Cuzan‐Munteanu
- Institute of Chemistry 3 Academiei Street 2028 Chisinau Moldova
- Aix Marseille Université Centrale Marseille, CNRS, ISM2 UMR, 7313 13397 Marseille France
| | - Dumitru Sirbu
- Chemistry – School of Natural & Environmental Sciences Newcastle University NE1 7RU Newcastle upon Tyne UK
| | - Michel Giorgi
- CNRS, Centrale Marseille, FSCM Aix Marseille Université Marseille France
| | - Sergiu Shova
- Department of Inorganic Polymers Institute of Macromolecular Chemistry "Petru Poni" 41A Grigore Ghica Voda Alley 700487 Iasi Romania
| | - Elizabeth A. Gibson
- Chemistry – School of Natural & Environmental Sciences Newcastle University NE1 7RU Newcastle upon Tyne UK
| | - Marius Réglier
- Aix Marseille Université Centrale Marseille, CNRS, ISM2 UMR, 7313 13397 Marseille France
| | - Maylis Orio
- Aix Marseille Université Centrale Marseille, CNRS, ISM2 UMR, 7313 13397 Marseille France
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico Universidade de Lisboa 1049‐001 Lissabon Portugal
| | - Andrew C. Benniston
- Chemistry – School of Natural & Environmental Sciences Newcastle University NE1 7RU Newcastle upon Tyne UK
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12
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Drosou M, Kamatsos F, Mitsopoulou CA. Recent advances in the mechanisms of the hydrogen evolution reaction by non-innocent sulfur-coordinating metal complexes. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01113g] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review comments on the homogeneous HER mechanisms for catalysts carrying S-non-innocent ligands in the light of experimental and computational data.
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Affiliation(s)
- Maria Drosou
- Inorganic Chemistry Laboratory
- Department of Chemistry
- National and Kapodistrian University of Athens
- Panepistimiopolis
- Greece
| | - Fotios Kamatsos
- Inorganic Chemistry Laboratory
- Department of Chemistry
- National and Kapodistrian University of Athens
- Panepistimiopolis
- Greece
| | - Christiana A. Mitsopoulou
- Inorganic Chemistry Laboratory
- Department of Chemistry
- National and Kapodistrian University of Athens
- Panepistimiopolis
- Greece
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13
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Papadakis M, Barrozo A, Straistari T, Queyriaux N, Putri A, Fize J, Giorgi M, Réglier M, Massin J, Hardré R, Orio M. Ligand-based electronic effects on the electrocatalytic hydrogen production by thiosemicarbazone nickel complexes. Dalton Trans 2020; 49:5064-5073. [DOI: 10.1039/c9dt04775a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This work reports on the synthesis and characterization of a series of mononuclear thiosemicarbazone nickel complexes that display significant catalytic activity for hydrogen production in DMF using trifluoroacetic acid as the proton source.
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Affiliation(s)
| | | | | | | | - Anisa Putri
- Aix Marseille Univ
- CNRS
- Centrale Marseille
- Marseille
- France
| | - Jennifer Fize
- Univ. Grenoble Alpes
- CNRS
- CEA
- IRIG
- Laboratoire de Chimie et Biologie des Métaux
| | | | | | - Julien Massin
- Aix Marseille Univ
- CNRS
- Centrale Marseille
- Marseille
- France
| | - Renaud Hardré
- Aix Marseille Univ
- CNRS
- Centrale Marseille
- Marseille
- France
| | - Maylis Orio
- Aix Marseille Univ
- CNRS
- Centrale Marseille
- Marseille
- France
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14
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Lawrence MA, Lorraine SC, Wilson KA, Wilson K. Review: Voltammetric properties and applications of hydrazones and azo moieties. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Cronin SP, Mamun AA, Toda MJ, Mashuta MS, Losovyj Y, Kozlowski PM, Buchanan RM, Grapperhaus CA. Utilizing Charge Effects and Minimizing Intramolecular Proton Rearrangement to Improve the Overpotential of a Thiosemicarbazonato Zinc HER Catalyst. Inorg Chem 2019; 58:12986-12997. [PMID: 31503487 DOI: 10.1021/acs.inorgchem.9b01912] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The zinc(II) complex of diacetyl-2-(4-methyl-3-thiosemicarbazone)-3-(2-hydrazonepyridine), ZnL1 (1), was prepared and evaluated as a precatalyst for the hydrogen evolution reaction (HER) under homogeneous conditions in acetonitrile. Complex 1 is protonated on the noncoordinating nitrogen of the hydrazonepyridine moiety to yield the active catalyst Zn(HL1)OAc (2) upon addition of acetic acid. Addition of methyl iodide to 1 yields the corresponding methylated derivative ZnL2I (3). In solution, partial dissociation of the coordinated iodide yields the cationic derivative 3'. Complexes 1-3 were characterized by 1H NMR, FT-IR, and UV-visible spectroscopies. The solid-state structures of 2 and 3 were determined by single crystal X-ray diffraction. HER studies conducted in acetonitrile with acetic acid as the proton source yield a turnover frequency (TOF) of 7700 s-1 for solutions of 1 at an overpotential of 1.27 V and a TOF of 6700 s-1 for solutions of 3 at an overpotential of 0.56 V. For both complexes, the required potential for catalysis, Ecat/2, is larger than the thermodynamic reduction potential, E1/2, indicative of a kinetic barrier attributed to intramolecular proton rearrangement. The effect is larger for solutions of 1 (+440 mV) than for solutions of 3 (+160 mV). Controlled potential coulometry studies were used to determine faradaic efficiencies of 71 and 89% for solutions of 1 and 3, respectively. For both catalysts, extensive cycling of potential under catalytic conditions results in the deposition of a film on the glassy carbon electrode surface that is active as an HER catalyst. Analysis of the film of 3 by X-ray photoelectron spectroscopy indicates the complex remains intact upon deposition. A proposed ligand-centered HER mechanism with 1 as a precatalyst to 2 is supported computationally using density functional theory (DFT). All catalytic intermediates in the mechanism were structurally and energetically characterized with the DFT/B3LYP/6-311g(d,p) in solution phase using a polarizable continuum model (PCM). The thermodynamic feasibility of the mechanism is supported by calculation of equilibrium constants or reduction potentials for each proposed step.
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Affiliation(s)
- Steve P Cronin
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Abdullah Al Mamun
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Megan J Toda
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Mark S Mashuta
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Yaroslav Losovyj
- Department of Chemistry , Indiana University Bloomington , Bloomington , Indiana 47405 , United States
| | - Pawel M Kozlowski
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Robert M Buchanan
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
| | - Craig A Grapperhaus
- University of Louisville , Department of Chemistry , 2320 South Brook Street , Louisville , Kentucky 40292 , United States
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16
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Gupta AJ, Vishnosky NS, Hietsoi O, Losovyj Y, Strain J, Spurgeon J, Mashuta MS, Jain R, Buchanan RM, Gupta G, Grapperhaus CA. Effect of Stacking Interactions on the Translation of Structurally Related Bis(thiosemicarbazonato)nickel(II) HER Catalysts to Modified Electrode Surfaces. Inorg Chem 2019; 58:12025-12039. [PMID: 31479262 DOI: 10.1021/acs.inorgchem.9b01209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A series of crystalline nickel(II) complexes (1-3) based on inexpensive bis(thiosemicarbazone) ligands diacetylbis(4-methyl-3-thiosemicarbazone) (H2ATSM), diacetylbis(4,4-dimethyl-3-thiosemicarbazone) (H2ATSDM), and diacetylbis[4-(2,2,2-trifluoroethyl)-3-thiosemicarbazone] (H2ATSM-F6) were synthesized and characterized by single-crystal X-ray diffraction and NMR, UV-visible, and Fourier transform infrared spectroscopies. Modified electrodes GC-1-GC-3 were prepared with films of 1-3 deposited on glassy carbon and evaluated as potential hydrogen evolution reaction (HER) catalysts. HER studies in 0.5 M aqueous H2SO4 (10 mA cm-2) revealed dramatic shifts in the overpotential from 0.740 to 0.450 V after extended cycling for 1 and 2. The charge-transfer resistances for GC-1-GC-3 were determined to be 270, 160, and 630 Ω, respectively. Characterization of the modified surfaces for GC-1 and GC-2 by scanning electron microscopy and Raman spectroscopy revealed similar crystalline coatings before HER that changed to surface-modified crystallites after conditioning. The surface of GC-3 had an initial glasslike appearance before HER that delaminated after HER. The differences in the surface morphology and the effect of conditioning are correlated with crystal-packing effects. Complexes 1 and 2 pack as columns of interacting complexes in the crystallographic a direction with short interplanar spacings between 3.37 and 3.54 Å. Complex 3 packs as columns of isolated molecules in the crystallographic b direction with long-range interplanar spacings of 9.40 Å.
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Affiliation(s)
| | | | | | - Yaroslav Losovyj
- Department of Chemistry , Indiana University-Bloomington , Bloomington , Indiana 47405 , United States
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17
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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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18
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Jain R, Mamun AA, Buchanan RM, Kozlowski PM, Grapperhaus CA. Ligand-Assisted Metal-Centered Electrocatalytic Hydrogen Evolution upon Reduction of a Bis(thiosemicarbazonato)Ni(II) Complex. Inorg Chem 2018; 57:13486-13493. [DOI: 10.1021/acs.inorgchem.8b02110] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Rahul Jain
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
| | - Abdullah Al Mamun
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
| | - Robert M. Buchanan
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
| | - Pawel M. Kozlowski
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
- Department of Food Sciences, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland
| | - Craig A. Grapperhaus
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
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