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The relativistic all-electron ab initio calculations on the multiplet electronic structure of U3+ ion. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Roy SK, Jian T, Lopez GV, Li WL, Su J, Bross DH, Peterson KA, Wang LS, Li J. A combined photoelectron spectroscopy and relativistic ab initio studies of the electronic structures of UFO and UFO(-). J Chem Phys 2016; 144:084309. [PMID: 26931704 DOI: 10.1063/1.4942188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The observation of the gaseous UFO(-) anion is reported, which is investigated using photoelectron spectroscopy and relativisitic ab initio calculations. Two strong photoelectron bands are observed at low binding energies due to electron detachment from the U-7sσ orbital. Numerous weak detachment bands are also observed due to the strongly correlated U-5f electrons. The electron affinity of UFO is measured to be 1.27(3) eV. High-level relativistic quantum chemical calculations have been carried out on the ground state and many low-lying excited states of UFO to help interpret the photoelectron spectra and understand the electronic structure of UFO. The ground state of UFO(-) is linear with an O-U-F structure and a (3)H4 spectral term derived from a U 7sσ(2)5fφ(1)5fδ(1) electron configuration, whereas the ground state of neutral UFO has a (4)H(7/2) spectral term with a U 7sσ(1)5fφ(1)5fδ(1) electron configuration. Strong electron correlation effects are found in both the anionic and neutral electronic configurations. In the UFO neutral, a high density of electronic states with strong configuration mixing is observed in most of the scalar relativistic and spin-orbit coupled states. The strong electron correlation, state mixing, and spin-orbit coupling of the electronic states make the excited states of UFO very challenging for accurate quantum chemical calculations.
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Affiliation(s)
- Soumendra K Roy
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Tian Jian
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Gary V Lopez
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Wei-Li Li
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Jing Su
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - David H Bross
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, USA
| | - Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, USA
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
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Lu JB, Jian J, Huang W, Lin H, Li J, Zhou M. Experimental and theoretical identification of the Fe(vii) oxidation state in FeO4−. Phys Chem Chem Phys 2016; 18:31125-31131. [DOI: 10.1039/c6cp06753k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two isomers of iron tetraoxygen anion, dioxoiron peroxide [(η2-O2)FeO2]− and tetroxide FeO4− were characterized by experiment and theoretical calculations, with heptavalent Fe(vii) oxidation state identified in the later.
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Affiliation(s)
- Jun-Bo Lu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Tsinghua University
- Beijing 100084
- China
| | - Jiwen Jian
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Wei Huang
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Tsinghua University
- Beijing 100084
- China
| | - Hailu Lin
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials
- Fudan University
- Shanghai 200433
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Tsinghua University
- Beijing 100084
- China
| | - Mingfei Zhou
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials
- Fudan University
- Shanghai 200433
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