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Probing the Electronic Structure and Chemical Bonding of Mono-Uranium Oxides with Different Oxidation States: UOx- and UOx (x=3-5)
Su, J; Li, WL; Lopez, GV; Jian, T; Cao, GJ; Li, WL; Schwarz, WHE; Wang, LS; Li, J; Li, J (reprint author), Tsinghua Univ, Dept Chem, Minist Educ, Beijing 100084, Peoples R China.; Li, J (reprint author), Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China.; Wang, LS (reprint author), Brown Univ, Dept Chem, Providence, RI 02912 USA.; Schwarz, WHE (reprint author), Univ Siegen, Phys & Theoret Chem, D-57068 Siegen, Germany.
2016
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
ISSN1089-5639
Volume120Issue:7Pages:1084—1096
Subtype期刊文献
AbstractUranium oxide clusters UOx- (x = 3-5) were produced by laser vaporization and characterized by photoelectron spectroscopy and quantum theory. Photoelectron spectra were obtained for UOx- at various photon energies with well-resolved detachment transitions and vibrational resolution for x = 3 and 4. The electron affinities of UOx were measured as 1.12, 3.60, and 4.02 eV for x = 3, 4, and 5, respectively. The geometric and electronic structures of both the anions and the corresponding neutrals were investigated by quasi-relativistic electron-correlation quantum theory to interpret the photoelectron spectra and to provide insight into their chemical bonding. For UOx clusters with x <= 3, the O atoms appear as divalent closed-shell anions around the U atom, which is in various oxidation states from U-II(fds)(4) in UO to U-VI(fds)(0) in UO3. For x > 3, there are no longer sufficient valence electrons from the U atom to fill the O(2p) shell, resulting in fractionally charged and multicenter delocalized valence states for the O ligands as well as eta(1)- or eta(2)-bonded O-2 units, with unusual spin couplings and complicated electron correlations in the unfilled poly oxo shell. The present work expands our understanding of both the bonding capacities of actinide elements with extended spdf valence shells as well as the multitude of oxygen's charge and bonding states.
KeywordRelativistic Quantum-chemistry Kohn-sham Orbitals Infrared-spectra Basis-sets Gas-phase Valence Indexes Wave-functions Photoelectron-spectroscopy Excitation-energies Spin-orbit
DOI10.1021/acs.jpca.5b11354
Indexed BySCI
Language英语
WOS IDWOS:000371103000015
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25813
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorSchwarz, WHE; Li, J (reprint author), Tsinghua Univ, Dept Chem, Minist Educ, Beijing 100084, Peoples R China.; Li, J (reprint author), Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China.; Wang, LS (reprint author), Brown Univ, Dept Chem, Providence, RI 02912 USA.; Schwarz, WHE (reprint author), Univ Siegen, Phys & Theoret Chem, D-57068 Siegen, Germany.
Recommended Citation
GB/T 7714
Su, J,Li, WL,Lopez, GV,et al. Probing the Electronic Structure and Chemical Bonding of Mono-Uranium Oxides with Different Oxidation States: UOx- and UOx (x=3-5)[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2016,120(7):1084—1096.
APA Su, J.,Li, WL.,Lopez, GV.,Jian, T.,Cao, GJ.,...&Schwarz, WHE .(2016).Probing the Electronic Structure and Chemical Bonding of Mono-Uranium Oxides with Different Oxidation States: UOx- and UOx (x=3-5).JOURNAL OF PHYSICAL CHEMISTRY A,120(7),1084—1096.
MLA Su, J,et al."Probing the Electronic Structure and Chemical Bonding of Mono-Uranium Oxides with Different Oxidation States: UOx- and UOx (x=3-5)".JOURNAL OF PHYSICAL CHEMISTRY A 120.7(2016):1084—1096.
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