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Li X, Tang Y, Han C, Wei Z, Fan H, Lv H, Cai T, Cui Y, Xing W, Yan Z, Zhi C, Li H. A Static Tin-Manganese Battery with 30000-Cycle Lifespan Based on Stabilized Mn 3+/Mn 2+ Redox Chemistry. ACS NANO 2023; 17:5083-5094. [PMID: 36853201 DOI: 10.1021/acsnano.3c00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
High-potential Mn3+/Mn2+ redox couple (>1.3 V vs SHE) in a static battery system is rarely reported due to the shuttle and disproportionation of Mn3+ in aqueous solutions. Herein, based on reversible stripping/plating of the Sn anode and stabilized Mn2+/Mn3+ redox couple in the cathode, an aqueous Sn-Mn full battery is established in acidic electrolytes. Sn anode exhibits high deposition efficiency, low polarization, and excellent stability in acidic electrolytes. With the help of H+ and a complexing agent, a reversible conversion between Mn2+ and Mn3+ ions takes place on the graphite surface. Pyrophosphate ligand is initially employed to form a protective layer through a complexation process with Sn4+ on the electrode surface, effectively preventing Mn3+ from disproportionation and hindering the uncontrollable diffusion of Mn3+ to electrolytes. Benefiting from the rational design, the full battery delivers satisfied electrochemical performance including a large capacity (0.45 mAh cm-2 at 5 mA cm-2), high discharge plateau voltage (>1.6 V), excellent rate capability (58% retention from 5 to 30 mA cm-2), and superior cycling stability (no decay after 30 000 cycles). The battery design strategy realizes a robustly stable Mn3+/Mn2+ redox reaction, which broadens research into ultrafast acidic battery systems.
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Affiliation(s)
- Xuejin Li
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, PR China
| | - Yongchao Tang
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, PR China
| | - Cuiping Han
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, PR China
| | - Zhiquan Wei
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, PR China
| | - Haodong Fan
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
| | - Haiming Lv
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, PR China
| | - Tonghui Cai
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
| | - Yongpeng Cui
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
| | - Wei Xing
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
| | - Zifeng Yan
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China
| | - Chunyi Zhi
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, PR China
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, PR China
| | - Hongfei Li
- School of System Design and Intelligent Manufacturing, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
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Conradie J, Erasmus E. Cobalt complexes with multi-dentate N-donor ligands: Redox, X-ray Photoelectron Spectroscopic and theoretical study. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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3
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Mabuea B, Swart HC, Erasmus E. Photocatalytic Decomposition of an Azo Dye Using Transition-Metal-Doped Tungsten and Molybdenum Carbides. ACS OMEGA 2022; 7:23401-23411. [PMID: 35847302 PMCID: PMC9280970 DOI: 10.1021/acsomega.2c01727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The preparation, characterization, and photocatalytic application of tungsten or molybdenum carbides (Ni-WC, 1, Co-WC, 2, Ni-MoC, 3, Co-MoC, 4, NiCo-WC, 5, NiCo-MoC, 6, NiFe-WC, 7, and NiFe-MoC, 8) doped with transition metals (Fe, Co, and Ni) are reported. These transition-metal carbide (TMC) particles show that the submicrometer globular particles agglomerated to form larger particles, with smaller crystallites present on the surface of the large particles. These crystallite sizes range between 4 and 34 nm (as calculated from X-ray diffraction data) depending on the metal dopant and type of carbide. Oxidation of the metal carbides is evident from the two sets of photoelectron lines present in the X-ray photoelectron spectroscopy (XPS) of the W 4f area. The Mo 3d spectra reveal four sets of photoelectron lines associated with oxidized MoO2 and MoO3 as well as Mo2+ and Mo3+ associated with MoC1-x . The XPS of the dopant metals Ni, Co, and Fe also show partial oxidation. The photocatalytic decomposition of Congo red (an azo dye) is used as a model reaction to determine the photocatalytic activities of the transition-metal carbides, which is related to the TMCs' optical band gap energies.
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Affiliation(s)
- Busisiwe
Petunia Mabuea
- Department
of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | | | - Elizabeth Erasmus
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
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Chen C, Wang X, Li Z, Du X, Shao Z, Sun X, Liu D, Gao C, Hao L, Zhao Q, Zhang B, Cui G, Pang S. Polyacrylonitrile‐Coordinated Perovskite Solar Cell with Open‐Circuit Voltage Exceeding 1.23 V. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202113932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chen Chen
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Xiao Wang
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Zhipeng Li
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Xiaofan Du
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Zhipeng Shao
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Xiuhong Sun
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Dachang Liu
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Caiyun Gao
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Lianzheng Hao
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qiangqiang Zhao
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Bingqian Zhang
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
| | - Guanglei Cui
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- China School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shuping Pang
- Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
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Chen C, Wang X, Li Z, Du X, Shao Z, Sun X, Liu D, Gao C, Hao L, Zhao Q, Zhang B, Cui G, Pang S. Polyacrylonitrile-Coordinated Perovskite Solar Cell with Open-Circuit Voltage Exceeding 1.23 V. Angew Chem Int Ed Engl 2021; 61:e202113932. [PMID: 34882937 DOI: 10.1002/anie.202113932] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Indexed: 11/08/2022]
Abstract
In solution-processed organic-inorganic halide perovskite films, halide-anion related defects including halide vacancies and interstitial defects can easily form at the surfaces and grain boundaries. The uncoordinated lead cations produce defect levels within the band gap, and the excess iodides disturb the interfacial carrier transport. Thus these defects lead to severe nonradiative recombination, hysteresis, and large energy loss in the device. Herein, polyacrylonitrile (PAN) was introduced to passivate the uncoordinated lead cations in the perovskite films. The coordinating ability of cyano group was found to be stronger than that of the normally used carbonyl groups, and the strong coordination could reduce the I/Pb ratio at the film surface. With the PAN perovskite film, the device efficiency improved from 21.58 % to 23.71 % and the open-circuit voltage from 1.12 V to 1.23 V, the ion migration activation energy increased, and operational stability improved.
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Affiliation(s)
- Chen Chen
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Xiao Wang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Zhipeng Li
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Xiaofan Du
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Zhipeng Shao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Xiuhong Sun
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Dachang Liu
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Caiyun Gao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Lianzheng Hao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qiangqiang Zhao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Bingqian Zhang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Guanglei Cui
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China.,China School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shuping Pang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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6
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Swarts PJ, Erasmus E, Fourie E. Comparison of synthetic, spectroscopic, computational and electrochemical aspects of ferrocenyl-containing β-diketones, β-ketoesters and β-ketoamides. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Maseme MR, Buitendach BE, Erasmus E, Swarts JC. The chemistry of spin-coated rhodium-ferrocenyl complexes supported on silanol-capped silicon wafers. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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8
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Mentoor K, Twigge L, Niemantsverdriet JWH, Swarts JC, Erasmus E. Silica Nanopowder Supported Frustrated Lewis Pairs for CO 2 Capture and Conversion to Formic Acid. Inorg Chem 2021; 60:55-69. [PMID: 33351611 DOI: 10.1021/acs.inorgchem.0c02012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of hydroxylated silica nanopowders S1 and allyl-functionalized silica nanopowders S2 with 3-(diphenylborano)- or 3-bis(pentafluorophenylborano)propyltrimethoxysilane or 2-(diphenylphosphino)- or 2-(dicyclohexylphosphino)ethyltriethoxysilane generates silica nanopowder supported Lewis acids S3 and silica nanopowder supported Lewis bases S4. These surfaces were characterized by 13C, 11B, and 31P cross-polarization magic angle spinning nuclear magnetic resonance (CP MAS NMR), X-ray photoelectron spectroscopy (XPS), and attenuated total reflection Fourier transform infrared (ATR FTIR). When S3 is combined with solution-phase Lewis bases PR3 (R = C6F5, C6H5, mesityl), six associated silica nanopowder supported frustrated Lewis pairs (FLPs) are formed. In another set of six reactions, the interactions between the supported Lewis bases S4 and solution-phase Lewis acids BR3 with R = C6F5, C6H5, mesityl produced six more associated supported FLPs. The capture of CO2 by these FLPs producing FLP-CO2 Lewis pair adducts S5 and S6 were highlighted by ATR FTIR, and it was found that FLP S5e with R = C6H5 on both the supported Lewis acid and solution-phase Lewis base trapped the largest quantities of CO2 on the silica nanopowder supports. Conversion of CO2 to HCOOH was achieved by first activating H2 to generate activated FLP-H2 surfaces S7 and S9. Addition of CO2 then generated HCOOH via the silica nanopowder supported FLP-HCOOH adducts S8 and S10. Qualitative identification of HCOOH generation was achieved by ATR FTIR measurements, and surface 10b with R = C6H5 proved to be the most successful silica nanopowder surface bound FLP in HCOOH generation. In some cases, diborano formates (-BO(CH)OB-) S11 and S12 were also identified as side products during HCOOH formation. Spectroscopic characterization of purposefully synthesized S11 and S12 included 11B and 31P CP MAS NMR.
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Affiliation(s)
- Kgauhelo Mentoor
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
| | - Linette Twigge
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
| | | | - Jannie C Swarts
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
| | - Elizabeth Erasmus
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
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9
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X-ray diffraction and QTAIM calculations of the non-covalent intermolecular fluorine-fluorine interactions in tris(trifluoroacetylacetonato)-manganese(III). J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Buitendach BE, Conradie J, Malan FP, Niemantsverdriet JWH, Swarts JC. Synthesis, Spectroscopy and Electrochemistry in Relation to DFT Computed Energies of Ferrocene- and Ruthenocene-Containing -Diketonato Iridium(III) Heteroleptic Complexes. Structure of [(2-Pyridylphenyl) 2Ir(RcCOCHCOCH 3]. Molecules 2019; 24:E3923. [PMID: 31671705 PMCID: PMC6864483 DOI: 10.3390/molecules24213923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/20/2019] [Accepted: 10/24/2019] [Indexed: 12/02/2022] Open
Abstract
A series of new ferrocene- and ruthenocene-containing iridium(III) heteroleptic complexes of the type [(ppy)2Ir(RCOCHCOR')], with ppy = 2-pyridylphenyl, R = Fc = FeII(η5-C5H4)(η5-C5H5) and R' = CH3 (1) or Fc (2), as well as R = Rc = RuII(η5-C5H4)(η5-C5H5) and R' = CH3 (3), Rc (4) or Fc (5) was synthesized via the reaction of appropriate metallocene-containing β-diketonato ligands with [(ppy)2(-Cl)Ir]2. The single crystal structure of 3 (monoclinic, P21/n, Z = 4) is described. Complexes 1-5 absorb light strongly in the region 280-480 nm the metallocenyl -diketonato substituents quench phosphorescence in 1-5. Cyclic and square wave voltammetric studies in CH2Cl2/[N(nBu)4][B(C6F5)4] allowed observation of a reversible IrIII/IV redox couple as well as well-resolved ferrocenyl (Fc) and ruthenocenyl (Rc) one-electron transfer steps in 1-5. The sequence of redox events is in the order Fc oxidation, then IrIII oxidation and finally ruthenocene oxidation, all in one-electron transfer steps. Generation of IrIV quenched phosphorescence in 6, [(ppy)2Ir(H3CCOCHCOCH3)]. This study made it possible to predict the IrIII/IV formal reduction potential from Gordy scale group electronegativities, χR and/or ΣχR' of -diketonato pendent side groups as well as from DFT-calculated energies of the highest occupied molecular orbital of the species involved in the IrIII/IV oxidation at a 98 % accuracy level.
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Affiliation(s)
| | - Jeanet Conradie
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa.
| | - Frederick P Malan
- Department of Chemistry, University of Pretoria, Pretoria 0002, South Africa.
| | | | - Jannie C Swarts
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa.
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Tahara K, Terashita N, Tokunaga K, Yabumoto S, Kikuchi JI, Ozawa Y, Abe M. Zwitterionic Mixed Valence: Internalizing Counteranions into a Biferrocenium Framework toward Molecular Expression of Half-Cells in Quantum Cellular Automata. Chemistry 2019; 25:13728-13738. [PMID: 31376186 DOI: 10.1002/chem.201902840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/26/2019] [Indexed: 01/26/2023]
Abstract
Realization of molecular quantum cellular automata (QCA), a promising architecture for molecular computing through current-free processes, requires improved understanding and application of mixed-valence (MV) molecules. In this report, we present an electrostatic approach to creating MV subspecies through internalizing opposite charges in close proximity to MV ionic moieties. This approach is demonstrated by unsymmetrically attaching a charge-responsive boron substituent to a well-known organometallic MV complex, biferrocenium. Guest anions (CN- and F- ) bind to the Lewis acidic boron center, leading to unusual blue-shifts of the intervalence charge-transfer (IVCT) bands. To the best of our knowledge, this is the first reported example of a zwitterionic MV series in which the degree of positive charge delocalization can be varied by changing the bound anions, and serves to clarify the interplay between IVCT parameters. The key underlying factor is the variable zero-level energy difference in the MV states. This work provides new insight into imbuing MV molecules with external charge-responsiveness, a prerequisite of molecular QCA techniques.
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Affiliation(s)
- Keishiro Tahara
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
| | - Nazuna Terashita
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Ken Tokunaga
- Division of Liberal Arts, Centre for Promotion of Higher Education, Kogakuin University, 2665-1, Nakano, Hachioji, Tokyo, 192-0015, Japan
| | - Shiomi Yabumoto
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Jun-Ichi Kikuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Yoshiki Ozawa
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
| | - Masaaki Abe
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
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Synthesis of the labile rhenium(I) complexes fac-Re(CO)3(L)[κ2-O,O-FcC(O)CHC(O)Me] (where Fc = ferrocenyl; L = THF, H2O, alkyne) and alkyne addition to the diketonate ligand. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Botha E, Landman M, van Rooyen PH, Erasmus E. Electronic properties of ferrocenyl-terpyridine coordination complexes: An electrochemical and X-ray photoelectron spectroscopic approach. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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14
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Buitendach BE, Erasmus E, Niemantsverdriet JW, Swarts JC. Can Electrochemical Measurements Be Used To Predict X-ray Photoelectron Spectroscopic Data? The Case of Ferrocenyl-β-Diketonato Complexes of Manganese(III). Inorg Chem 2018; 57:6606-6616. [PMID: 29762020 DOI: 10.1021/acs.inorgchem.8b00745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In order to better understand intramolecular communication between molecular fragments, a series of ferrocene-functionalized β-diketonato manganese(III) complexes, [Mn(FcCOCHCOR)3] with R = CF3, 1, CH3, 2, Ph = C6H5, 3, and Fc = FeII(η5-C5H4)(η5-C5H5), 4, the mixed ligand β-diketonato complex [Mn(FcCOCHCOFc)2(FcCOCHCOCH3)], 5, as well as the acac complex [Mn(CH3COCHCOCH3)3], 6, were subjected to an electrochemical and X-ray photoelectron spectroscopy (XPS) study. The ferrocenyl (FeII) and MnIII redox potentials, E°', and photoelectron lines were sufficiently resolved in each complex to demonstrate a linear correlation between E°' and group electronegativities of ligand R groups, χR, or ΣχR, as well as with binding energies of both the Fe 2p3/2 and Mn 2p3/2 photoelectron lines. These relationships are consistent with effective communication between molecular fragments of 1-5. From these relationships, prediction of Mn and Fe core electron binding energies in [Mn(R1COCHCOR2)3] complexes from known manganese and/or ferrocenyl redox potentials are, therefore, now possible. Ligand infrared carbonyl stretching frequencies were successfully related to binding energy as a measure of the energy required for inner-sphere reorganization. In particular it became possible to explain why, upon electrochemical oxidation or photoionization, the ferrocenyl FeII inner-shell of 1-5 needs more energy in complexes with ligands bearing electron-withdrawing (CF3) groups than in ligands bearing electron-donating groups such as ferrocenyl. The XPS determined entity Iratio (the ratio between the intensities of the satellite and main metal 2p3/2 photoelectron lines) is an indication not only of the amount of charge transferred, but also of the degree of inner-sphere reorganization. Just as for binding energy, the quantity Iratio was also found to be related to the energy requirements for the inner-sphere reorganization depicted by the vibrational frequency, vco.
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Affiliation(s)
| | - Elizabeth Erasmus
- Department of Chemistry , University of the Free State , Bloemfontein 9300 , South Africa
| | | | - Jannie C Swarts
- Department of Chemistry , University of the Free State , Bloemfontein 9300 , South Africa
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Parrott LK, Erasmus E. Metal Hexacyanometallate Nanoparticles: Spectroscopic Investigation on the Influence of Oxidation State of Metals on Catalytic Activity. Catal Letters 2018. [DOI: 10.1007/s10562-018-2411-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Surfactant-stabilized nano-metal hexacyanoferrates with electrocatalytic and heterogeneous catalytic applications. TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0228-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Carrión MC, Torres J, Jalón FA, Rodríguez AM, Zirakzadeh A, Manzano BR. Phosphinofulvene Enolate Ligands in Ruthenium Complexes by Ferrocene Photolysis under Solar Radiation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M. Carmen Carrión
- Departamento de Química Inorgánica Orgánica y Bioquímica Universidad de Castilla‐La Mancha Facultad de Ciencias y Tecnologías Químicas‐IRICA Avda. C. J. Cela, 10 13071 Ciudad Real Spain
- Fundación Parque Científico y Tecnológico de Castilla‐La Mancha (Fundación PCTCLM) Bulevar Río Alberche s/n 45007 Toledo Spain
| | - Javier Torres
- Departamento de Química Inorgánica Orgánica y Bioquímica Universidad de Castilla‐La Mancha Facultad de Ciencias y Tecnologías Químicas‐IRICA Avda. C. J. Cela, 10 13071 Ciudad Real Spain
| | - Félix A. Jalón
- Departamento de Química Inorgánica Orgánica y Bioquímica Universidad de Castilla‐La Mancha Facultad de Ciencias y Tecnologías Químicas‐IRICA Avda. C. J. Cela, 10 13071 Ciudad Real Spain
| | - Ana M. Rodríguez
- Departamento de Química Inorgánica Orgánica y Bioquímica Universidad de Castilla‐La Mancha Escuela Técnica Superior de Ingenieros Industriales Avda. C. J. Cela, 3 13071 Ciudad Real Spain
| | - Afrooz Zirakzadeh
- Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9 1060 Vienna Austria
| | - Blanca R. Manzano
- Departamento de Química Inorgánica Orgánica y Bioquímica Universidad de Castilla‐La Mancha Facultad de Ciencias y Tecnologías Químicas‐IRICA Avda. C. J. Cela, 10 13071 Ciudad Real Spain
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18
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Gostynski R, Conradie J, Erasmus E. Significance of the electron-density of molecular fragments on the properties of manganese(iii) β-diketonato complexes: an XPS and DFT study. RSC Adv 2017. [DOI: 10.1039/c7ra04921h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The group electronegativity of the R-groups of the ligand influences the XPS binding energies and the amount of charge transferred in the Mn 2p3/2 photoelectron lines. DFT studies illustrated different Jahn–Teller elongation bond stretch isomers.
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Affiliation(s)
- Roxanne Gostynski
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
| | - Jeanet Conradie
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
| | - Elizabeth Erasmus
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
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19
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Properties of Manganese(III) Ferrocenyl-β-Diketonato Complexes Revealed by Charge Transfer and Multiplet Splitting in the Mn 2p and Fe 2p X-Ray Photoelectron Envelopes. Molecules 2016; 21:molecules21111427. [PMID: 27792197 PMCID: PMC6272950 DOI: 10.3390/molecules21111427] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/14/2016] [Accepted: 10/19/2016] [Indexed: 11/16/2022] Open
Abstract
A series of ferrocenyl-functionalized β-diketonato manganese(III) complexes, [Mn(FcCOCHCOR)3] with R = CF3, CH3, Ph (phenyl) and Fc (ferrocenyl) was subjected to a systematic XPS study of the Mn 2p3/2 and Fe 2p3/2 core-level photoelectron lines and their satellite structures. A charge-transfer process from the β-diketonato ligand to the Mn(III) metal center is responsible for the prominent shake-up satellite peaks of the Mn 2p photoelectron lines and the shake-down satellite peaks of the Fe 2p photoelectron lines. Multiplet splitting simulations of the photoelectron lines of the Mn(III) center of [Mn(FcCOCHCOR)3] resemble the calculated Mn 2p3/2 envelope of Mn3+ ions well, indicating the Mn(III) centers are in the high spin state. XPS spectra of complexes with unsymmetrical β-diketonato ligands (i.e., R not Fc) were described with two sets of multiplet splitting peaks representing fac and the more stable mer isomers respectively. Stronger electron-donating ligands stabilize fac more than mer isomers. The sum of group electronegativities, ΣχR, of the β-diketonato pendant side groups influences the binding energies of the multiplet splitting and charge transfer peaks in both Mn and Fe 2p3/2 photoelectron lines, the ratio of satellite to main peak intensities, and the degree of covalence of the Mn–O bond.
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20
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van de Loosdrecht J, Ciobîcă IM, Gibson P, Govender NS, Moodley DJ, Saib AM, Weststrate CJ, Niemantsverdriet JW. Providing Fundamental and Applied Insights into Fischer–Tropsch Catalysis: Sasol–Eindhoven University of Technology Collaboration. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00595] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Ionel M. Ciobîcă
- Sasol Technology
Netherlands BV, Vlierstraat 111, 7544 GG, Enschede, The Netherlands
| | - Philip Gibson
- Sasol, Group Technology, 1 Klasie Havenga Street, Sasolburg 1947, South Africa
| | - N. S. Govender
- Sasol, Group Technology, 1 Klasie Havenga Street, Sasolburg 1947, South Africa
| | - Denzil J. Moodley
- Sasol, Group Technology, 1 Klasie Havenga Street, Sasolburg 1947, South Africa
| | - Abdool M. Saib
- Sasol, Group Technology, 1 Klasie Havenga Street, Sasolburg 1947, South Africa
| | - C. J. Weststrate
- Laboratory
for Physical Chemistry of Surfaces, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - J. W. Niemantsverdriet
- Laboratory
for Physical Chemistry of Surfaces, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
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