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Ju B, Zhang Z, Kong X, Zou J, Li G, Xie H, Jiang L. Photoelectron velocity map imaging spectroscopy of group 14 elements and iron tetracarbonyl anionic clusters MFe(CO)4- (M = Si, Ge, Sn). J Chem Phys 2024; 160:044307. [PMID: 38294311 DOI: 10.1063/5.0187204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/09/2024] [Indexed: 02/01/2024] Open
Abstract
The heteronuclear group 14 M-iron tetracarbonyl clusters MFe(CO)4- (M = Si, Ge, Sn) anions have been generated in the gas phase by laser ablation of M-Fe alloys and detected by mass and photoelectron spectroscopy. With the support of quantum chemical calculations, the geometric and electronic structures of MFe(CO)4- (M = Si, Ge, Sn) are elucidated, which shows that all the MFe(CO)4- clusters have the M-Fe bonded, iron-centered, and carbonyl-terminal M-Fe(CO)4 structure with the C2v symmetry and a 2B2 ground state. The M-Fe bond can be considered a double bond, which includes one σ electron sharing bond and one π dative bond. The C-O bonds in those anionic clusters are calculated to be elongated to different extents, and in particular, the C-O bonds in SiFe(CO)4- are elongated more. The Si-Fe alloy thus turns out to be a better collocation to activate the C-O bonds in the gas phase among group 14. The present findings have important implications for the rational development of high-performance catalysts with isolated metal atoms/clusters dispersed on supports.
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Affiliation(s)
- Bangmin Ju
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ziheng Zhang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China
| | - Jinghan Zou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Gang Li
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Hua Xie
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Ling Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
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Sweeny BC, Pan H, Ard SG, Shuman NS, Viggiano AA. On the Role of Hydrogen Atom Transfer (HAT) in Thermal Activation of Methane by MnO+: Entropy vs. Energy. ACTA ACUST UNITED AC 2019. [DOI: 10.1515/zpch-2018-1354] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abstract
The temperature dependent kinetics and product branching fractions of first-row transition metal oxide cation MnO+ with CH4 and CD4 at temperatures between 200 and 600 K are measured using a selected-ion flow tube apparatus. Likely reaction mechanisms are determined by comparison of temperature dependent kinetics to statistical modeling along calculated reaction coordinates. The data is well-modeled with the reaction proceeding over a rate limiting four-centered transition state leading to an insertion intermediate, similar to reactions of NiO+ and FeO+, and showing characteristics of proton-coupled electron transfer (PCET). However, a more direct pathway traversing a transition state of hydrogen atom transfer (HAT) character to a hydroxyl intermediate is found to possibly be competitive, especially with increasing temperature. While uncertainties in calculated energetics limit quantitative assessment of the role of HAT at thermal energies, it is clear that this mechanism becomes increasingly prevalent in higher energy regimes.
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Affiliation(s)
- Brendan C. Sweeny
- NRC postdoc at Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base , New Mexico 87117 , USA
| | - Hanqing Pan
- USRA Space Scholar at Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base , New Mexico 87117 , USA
| | - Shaun G. Ard
- Institute for Scientific Research, Boston College , Boston, MA 02467 , USA
| | - Nicholas S. Shuman
- Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base , New Mexico 87117 , USA
| | - Albert A. Viggiano
- Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base , New Mexico 87117 , USA
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Chi C, Qu H, Meng L, Kong F, Luo M, Zhou M. CO Oxidation by Group 3 Metal Monoxide Cations Supported on [Fe(CO)4
]2−. Angew Chem Int Ed Engl 2017; 56:14096-14101. [DOI: 10.1002/anie.201707898] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/29/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Chaoxian Chi
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Hui Qu
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
| | - Luyan Meng
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Fanchen Kong
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
| | - Mingbiao Luo
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Mingfei Zhou
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
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Chi C, Qu H, Meng L, Kong F, Luo M, Zhou M. CO Oxidation by Group 3 Metal Monoxide Cations Supported on [Fe(CO)4
]2−. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707898] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chaoxian Chi
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Hui Qu
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
| | - Luyan Meng
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Fanchen Kong
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
| | - Mingbiao Luo
- School of Chemistry, Biological and Materials Sciences; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation; East China University of Technology; Nanchang Jiangxi Province 330013 China
| | - Mingfei Zhou
- Department of Chemistry; Collaborative Innovation Center of Chemistry for Energy Materials; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; Shanghai 200433 China
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