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Guan E, Ciston J, Bare SR, Runnebaum RC, Katz A, Kulkarni A, Kronawitter CX, Gates BC. Supported Metal Pair-Site Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02000] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Erjia Guan
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Jim Ciston
- National Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Simon R. Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ron C. Runnebaum
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
- Department of Viticulture & Enology, University of California, Davis, California 95616, United States
| | - Alexander Katz
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Ambarish Kulkarni
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Bruce C. Gates
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
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Cao K, Skowron ST, Biskupek J, Stoppiello CT, Leist C, Besley E, Khlobystov AN, Kaiser U. Imaging an unsupported metal-metal bond in dirhenium molecules at the atomic scale. SCIENCE ADVANCES 2020; 6:eaay5849. [PMID: 32010771 PMCID: PMC6968940 DOI: 10.1126/sciadv.aay5849] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Metallic bonds remain one of the most important and least understood of the chemical bonds. In this study, we generated Re2 molecules in which the Re-Re core is unsupported by ligands. Real-time imaging of the atomic-scale dynamics of Re2 adsorbed on a graphitic lattice allows direct measurement of Re-Re bond lengths for individual molecules that changes in discrete steps correlating with bond order from one to four. Direct imaging of the Re-Re bond breaking process reveals a new bonding state with the bond order less than one and a high-amplitude vibrational stretch, preceding the bond dissociation. The methodology, based on aberration-corrected transmission electron microscopy imaging, is shown to be a powerful analytical tool for the investigation of dynamics of metallic bonding at the atomic level.
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Affiliation(s)
- Kecheng Cao
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Stephen T. Skowron
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Johannes Biskupek
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Craig T. Stoppiello
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Christopher Leist
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Elena Besley
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Andrei N. Khlobystov
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Ute Kaiser
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
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Zeng LJ, Deng K. Tc n and Tc n@C 70 Endohedral Metalofullerenes: ab initio Spin-density-functional Calculations. CHINESE J CHEM PHYS 2015. [DOI: 10.1063/1674-0068/28/cjcp1507140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
The ground and low-lying electronic states of ReB were studied at the CASPT2//CASSCF level (multiconfigurational second-order perturbation theory) and quadruple-ζ ANO-RCC basis sets. Spectroscopic constants, potential energy curves, wavefunctions, and Mulliken population analysis are given. The ground state of ReB is of X(5)Σ(+) symmetry (R e = 1.817 Å, ω e = .909 cm(-1), and μ = 2.87 D), giving rise to a Ω = 0(+) ground state after including spin-orbit coupling.
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Tamukong PK, Hoffmann MR, Li Z, Liu W. Relativistic GVVPT2 Multireference Perturbation Theory Description of the Electronic States of Y2 and Tc2. J Phys Chem A 2014; 118:1489-501. [DOI: 10.1021/jp409426n] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Patrick K. Tamukong
- Chemistry Department, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Mark R. Hoffmann
- Chemistry Department, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Zhendong Li
- Beijing National Laboratory for Molecular
Sciences, Institute of Theoretical and Computational Chemistry, State
Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, and Center for Computational
Science and Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Wenjian Liu
- Beijing National Laboratory for Molecular
Sciences, Institute of Theoretical and Computational Chemistry, State
Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, and Center for Computational
Science and Engineering, Peking University, Beijing 100871, People’s Republic of China
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Roca-Sanjuán D, Aquilante F, Lindh R. Multiconfiguration second-order perturbation theory approach to strong electron correlation in chemistry and photochemistry. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.97] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Borin AC, Gobbo JP. Electronic Structure and Chemical Bonding in the Lowest Electronic States of TcN. J Phys Chem A 2009; 113:12421-6. [DOI: 10.1021/jp902545h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio Carlos Borin
- Instituto de Química, Universidade de São Paulo Av. Prof. Lineu Prestes, 748. 05508-900 São Paulo, SP, Brazil
| | - João Paulo Gobbo
- Instituto de Química, Universidade de São Paulo Av. Prof. Lineu Prestes, 748. 05508-900 São Paulo, SP, Brazil
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