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Kataoka Y, Sato K, Yano N. Hydroxypyridinate-bridged paddlewheel-type dirhodium complex as a catalyst for photochemical and electrochemical hydrogen evolution. J Chem Phys 2023; 159:204304. [PMID: 38014787 DOI: 10.1063/5.0173976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023] Open
Abstract
Electrochemical and photochemical hydrogen (H2) evolution activities of a 6-fluoro-2-hydroxypyridinate (fhp-)-bridged paddlewheel-type dirhodium (Rh2) complex, [Rh2(fhp)4], were investigated through experimental and theoretical approaches. In DMF, the [Rh2(fhp)4] underwent a one-electron reduction (assigned to Rh24+/3+) at -1.31 V vs SCE in the cathodic region. Adding trifluoroacetic acid as a proton source to the electrochemical cell containing [Rh2(fhp)4], the significant catalytic current, i.e., electrochemical H2 evolution, was observed; the turnover frequency and overpotential of electrochemical H2 evolution were 18 244 s-1 and 732 mV, respectively. The reaction mechanism of electrochemical H2 evolution catalyzed by [Rh2(fhp)4] in DMF was examined in detail by theoretically predicting the redox potentials and pKa values of the reaction intermediates using density functional theory calculations. The calculations revealed that (i) the formation of a one-electron reduced species, [Rh2(fhp)4]-, triggered for H2 evolution and (ii) the protonation and reduction processes of [Rh2(fhp)4]- to further reduced hydride intermediates proceeded directly via a concerted proton-electron transfer mechanism. Moreover, [Rh2(fhp)4] was shown to be a highly efficient H2 evolution catalyst (HEC) for photochemical proton reduction reactions when combined with an artificial photosynthetic (AP) system containing [Ir(ppy)2(dtbbpy)]PF6 and triethylamine, which served as a photosensitizer and a sacrificial electron donor, respectively. Under visible light irradiation, the total amount of H2 evolved and its turnover number (per Rh ion) were 1361.0 µmol and 13 610, respectively, which are superior to those of previously reported AP systems with rhodium complexes as HEC.
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Affiliation(s)
- Yusuke Kataoka
- Department of Chemistry, Natural Science of Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane 690-8504, Japan
| | - Kozo Sato
- Department of Chemistry, Natural Science of Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane 690-8504, Japan
| | - Natsumi Yano
- Department of Chemistry, Natural Science of Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane 690-8504, Japan
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Kataoka Y, Yano N, Mikuriya M, Handa M. Paddlewheel-type dirhodium complexes with N,N’-bridging ligands. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Kataoka Y, Yano N, Mikuriya M, Handa M. Coordination polymers and metal–organic frameworks based on paddlewheel-type dirhodium(II) tetracarboxylates. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Affiliation(s)
- Radim Hrdina
- Institute of Organic Chemistry Justus-Liebig University Giessen Heinrich-Buff-Ring 17 35392 Giessen Germany
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Martínez-Castro E, Suárez-Pantiga S, Mendoza A. Scalable Synthesis of Esp and Rhodium(II) Carboxylates from Acetylacetone and RhCl 3· xH 2O. Org Process Res Dev 2020; 24:1207-1212. [PMID: 32587455 PMCID: PMC7309316 DOI: 10.1021/acs.oprd.0c00164] [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: 04/06/2020] [Indexed: 11/28/2022]
Abstract
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Rhodium(II)
carboxylates are privileged catalysts for the most
challenging carbene-, nitrene-, and oxo-transfer reactions. In this
work, we address the strategic challenges of current organic and inorganic
synthesis methods to access these rhodium(II) complexes through an
oxidative rearrangement strategy and a reductive ligation reaction.
These studies illustrate the multiple benefits of oxidative rearrangement
in the process-scale synthesis of congested carboxylates over nitrile
anion alkylation reactions, and the impressive effect of inorganic
additives in the reductive ligation of rhodium(III) salts.
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Affiliation(s)
- Elisa Martínez-Castro
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Samuel Suárez-Pantiga
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Abraham Mendoza
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
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Coordination-Induced Self-Assembly of a Heteroleptic Paddlewheel-Type Dirhodium Complex. CRYSTALS 2020. [DOI: 10.3390/cryst10020085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A novel heteroleptic paddlewheel-type dirhodium (Rh2) complex [Rh2(O2CCH3)3(PABC)] (1; PABC = para-aminobenzenecarboxylate), which has an amino group as a potential donor site for coordination with the metal ion, was synthesized and characterized by 1H NMR, ESI-TOF-MS, infrared spectra, and elemental analysis. The slow evaporation of N,N-dimethylformamide (DMF)-dissolved 1 produces the purple-colored crystalline polymeric species [Rh2(O2CCH3)3 (PABC)(DMF)]n (1P). Single-crystal and powder X-ray diffraction analyses, as well as thermo-gravimetric analysis, clarified that 1P formed a one-dimensional polymeric structure, in which the two axial sites of the Rh2 ion in 1P are coordinated by a DMF molecule and an amino group of the PABC ligand of the neighboring molecule 1, by coordination-induced self-assembly (polymerization) with an Rh-amino bond. The reversible structural change (self-assembly and disassembly transformations) between the discrete species [Rh2(O2CCH3)3(PABC)(DMF)2] (1D; green solution) and the polymeric species 1P (purple solid) was accompanied by a color change, which easily occurred by the dissolution and evaporation procedures with DMF.
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Kataoka Y, Yano N, Kohara Y, Tsuji T, Inoue S, Kawamoto T. Experimental and Theoretical Study of Photochemical Hydrogen Evolution Catalyzed by Paddlewheel‐Type Dirhodium Complexes with Electron Withdrawing Carboxylate Ligands. ChemCatChem 2019. [DOI: 10.1002/cctc.201901534] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yusuke Kataoka
- Department of Chemistry, Graduate School of Natural Science and TechnologyShimane University 1060, Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Natsumi Yano
- Department of Special Course of Science and Technology, Graduate School of Natural Science and TechnologyShimane University 1060, Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Yoshihiro Kohara
- Department of Chemistry, Graduate School of Natural Science and TechnologyShimane University 1060, Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Takeshi Tsuji
- Department of Chemistry, Graduate School of Natural Science and TechnologyShimane University 1060, Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Satoshi Inoue
- Department of Chemistry, Faculty of ScienceKanagawa University 2946, Tsuchiya, Hiratsuka Kanagawa 259-1293 Japan
| | - Tatsuya Kawamoto
- Department of Chemistry, Faculty of ScienceKanagawa University 2946, Tsuchiya, Hiratsuka Kanagawa 259-1293 Japan
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Kataoka Y, Yano N, Handa M, Kawamoto T. Intrinsic hydrogen evolution capability and a theoretically supported reaction mechanism of a paddlewheel-type dirhodium complex. Dalton Trans 2019; 48:7302-7312. [PMID: 30801087 DOI: 10.1039/c8dt05035j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The intrinsic capability of the paddlewheel-type dirhodium tetraacetate complex, [Rh2(O2CCH3)4(H2O)2] ([1(H2O)2]), as a hydrogen evolution catalyst (HEC) for photochemical hydrogen evolution from aqueous solution was illustrated. This was achieved by using an optimized artificial photosynthesis (AP) system with a cyclometalated iridium complex [Ir(ppy)2(bpy)](PF6) ([Ir-PS-1]) and triethylamine (TEA) serving as a photosensitizer (PS) and a sacrificial donor, respectively. The total amount of hydrogen evolution and the turnover number (TON) of catalysis using this AP system were 385.7 μmol and 3857 (per Rh ion), respectively; these values are higher than those of [Rh(dtBubpy)3](PF6)3, which is the most efficient HEC among the mononuclear rhodium complexes, and RhCl3. Moreover, the catalytic performance of [1(H2O)2] was further accelerated by using [Ir(ppy)2(dtBubpy)](PF6) [Ir-PS-3] as a PS; 9886 TON (H2 per Rh ion) was verified after 12 h of irradiation. In addition, the detailed mechanism of hydrogen evolution catalyzed by [1(H2O)2] was clarified by combining electro- and photochemical analyses and DFT calculations. The optimized geometries of [1(H2O)2], [1], hydride intermediates [H-Rh2(O2CCH3)4] ([H-1]), and their reduced species were theoretically verified by DFT calculations. Moreover, their redox potentials were theoretically estimated and compared with the observed potentials. Their combination analyses indicated that (i) the formation of [1], which has an open-metal site for hydrogen evolution and can be reduced by the one-electron reduced species of [Ir-PS-1], is a trigger for hydrogen evolution; (ii) [H-1] and its reduced species, which are verified by CV analyses, are key intermediate species in this reaction; and (iii) photochemical hydrogen evolution catalyzed by [1(H2O)2] occurred by two-electron reduction processes.
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Affiliation(s)
- Yusuke Kataoka
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane, 690-8504, Japan.
| | - Natsumi Yano
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane, 690-8504, Japan.
| | - Makoto Handa
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane, 690-8504, Japan.
| | - Tatsuya Kawamoto
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946, Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan.
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Kataoka Y, Fukumoto R, Yano N, Atarashi D, Tanaka H, Kawamoto T, Handa M. Synthesis, Characterization, Absorption Properties, and Electronic Structures of Paddlewheel-Type Dirhodium(II) Tetra-μ-( n-naphthoate) Complexes: An Experimental and Theoretical Study. Molecules 2019; 24:E447. [PMID: 30691216 PMCID: PMC6384905 DOI: 10.3390/molecules24030447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/18/2019] [Accepted: 01/21/2019] [Indexed: 12/02/2022] Open
Abstract
The reactions of [Rh₂(O₂CCH₃)₄(OH₂)₂] with n-naphthalenecarboxylic acids (n = 1: 1-HNC, n = 2: 2-HNC) afford the dirhodium tetra-μ-(n-naphthoate) complexes [Rh₂(1-NC)₄] (1) and [Rh₂(2-NC)₄] (2), respectively. Single crystal X-ray diffraction analyses of [1(OCMe₂)₂] and [2(OCMe₂)₂], which were obtained by recrystallization from acetone (OCMe₂) solutions of 1 and 2, reveal that the dirhodium cores are coordinated by four equatorially bridging naphthoate ligands and two axial OCMe₂ ligands. Density functional theory (DFT) calculation confirmed that (i) the single Rh⁻Rh bond is formed between the two Rh ions and (ii) the electronic structures between two Rh ions in [1(OCMe₂)₂] and [2(OCMe₂)₂] are best described as π⁴δ²σ²δ*²π*⁴ and δ²π⁴σ²δ*²π*⁴, respectively. Time-dependent DFT (TDDFT) calculations clarify the absorption band characters of [1(OCMe₂)₂] and [2(OCMe₂)₂]; the former shows the bands due to d⁻d and metal⁻to⁻metal-ligand charge transfer (MMLCT) excitations in the visible light region, whereas the latter shows the bands due to only d⁻d excitations in the same region. The electrochemical properties and thermal stabilities of [1(OCMe₂)₂] and [2(OCMe₂)₂] were also investigated in this study.
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Affiliation(s)
- Yusuke Kataoka
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Raiki Fukumoto
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Natsumi Yano
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Daiki Atarashi
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Hidekazu Tanaka
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Tatsuya Kawamoto
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan.
| | - Makoto Handa
- Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
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Masternak J, Gilewska A, Kazimierczuk K, Khavryuchenko OV, Wietrzyk J, Trynda J, Barszcz B. Synthesis, physicochemical and theoretical studies on new rhodium and ruthenium dimers. Relationship between structure and cytotoxic activity. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Yano N, Kataoka Y, Tanaka H, Kawamoto T, Handa M. A New Paddlewheel-Type Dirhodium-Based Metal-Organic Framework with Deprotonated 2,6-Bis(2-benzimidazolyl)pyridine. ChemistrySelect 2016. [DOI: 10.1002/slct.201600617] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Natsumi Yano
- Department of Chemistry; Interdisciplinary Graduate School of Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Yusuke Kataoka
- Department of Chemistry; Interdisciplinary Graduate School of Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Hidekazu Tanaka
- Department of Chemistry; Interdisciplinary Graduate School of Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Tatsuya Kawamoto
- Department of Chemistry, Faculty of Science; Kanagawa University; 2946 Tsuchiya, Hiratsuka Kanagawa 259-1293 Japan
| | - Makoto Handa
- Department of Chemistry; Interdisciplinary Graduate School of Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
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Kataoka Y, Kataoka KS, Murata H, Handa M, Mori W, Kawamoto T. Synthesis and characterizations of a paddlewheel-type dirhodium-based photoactive porous metal-organic framework. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Paddlewheel‐Type Dirhodium Tetrapivalate Based Coordination Polymer: Synthesis, Characterization, and Self‐Assembly and Disassembly Transformation Properties. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600197] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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