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Bubas AR, Kafle A, Stevenson BC, Armentrout PB. The bond energy of UN+: Guided ion beam studies of the reactions of U+ with N2 and NO. J Chem Phys 2024; 160:164305. [PMID: 38647300 DOI: 10.1063/5.0204090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
A guided ion beam tandem mass spectrometer was used to study the reactions of U+ with N2 and NO. Reaction cross sections were measured over a wide range of energy for both systems. In each reaction, UN+ is formed by an endothermic process, thereby enabling the direct measurement of the threshold energy and determination of the UN+ bond dissociation energy. For the reaction of U+ + N2, a threshold energy (E0) of 4.02 ± 0.11 eV was measured, leading to D0 (UN+) = 5.73 ± 0.11 eV. The reaction of U+ + NO yields UO+ through an exothermic, barrierless process that proceeds with 94 ± 23% efficiency at the lowest energy. Analysis of the endothermic UN+ cross section in this reaction provides E0 = 0.72 ± 0.11 eV and, therefore, D0 (UN+) = 5.78 ± 0.11 eV. Averaging the values obtained from both reactions, we report D0 (UN+) = 5.76 ± 0.13 eV as our best value (uncertainty of two standard deviations). Combined with precise literature values for the ionization energies of U and UN, we also derive D0 (UN) = 5.86 ± 0.13 eV. Both bond dissociation energies agree well with high-level theoretical treatments in the literature. The formation of UN+ in reaction of U+ with NO also exhibits a considerable increase in reaction probability above ∼3 eV. Theory suggests that this may be consistent with the formation of UN+ in excited quintet spin states, which we hypothesize are dynamically favored because the number of 5f electrons in reactants and products is conserved.
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Affiliation(s)
- Amanda R Bubas
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, Utah 84112-0850, USA
| | - Arjun Kafle
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, Utah 84112-0850, USA
| | - Brandon C Stevenson
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, Utah 84112-0850, USA
| | - P B Armentrout
- Department of Chemistry, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, Utah 84112-0850, USA
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Smirnov AN, Solomonik VG. A route to high-accuracy ab initio description of electronic excited states in high-spin lanthanide-containing species: A case study of GdO. J Chem Phys 2023; 159:164304. [PMID: 37877487 DOI: 10.1063/5.0173916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023] Open
Abstract
Accurate description of electronic excited states of high-spin molecular species is a yet unsolved problem in modern electronic structure theory. A composite computational scheme developed in the present work contributes to solving this task for a challenging case of lanthanide-containing molecules. In the scheme, the highest-spin states whose wavefunctions are dominated by a single Slater determinant are described at the single-reference (SR) CCSD(T) level, whereas the lower-spin states, being inherently multiconfigurational in their nature, are treated with multireference (MR) methods, MRCI and/or CASPT2. An original technique which scales MR results against SR CCSD(T) ones to improve the accuracy in the former is proposed and examined, taking the example of 12 electronic states of gadolinium monoxide, X9Σ-, Y7Σ-, A'9Δ, A1'7Δ, A9Π, A17Π, B9Σ-, B17Σ-, C9Π, C17Π, D9Σ-, and D17Σ-, up to 35 000 cm-1. A multitude of the corresponding Ω (spin-coupled) states was then studied within the state-interacting approach employing the full Breit-Pauli spin-orbit coupling operator with CASSCF-generated ΛS states as a basis. For all ΛS and Ω states, the Gd-O bond lengths, spectroscopic constants ωe, ωexe, αe, and adiabatic excitation energies are obtained. The theoretical predictions are in good agreement with the experimental data, with deviations in excitation energies not exceeding 350 cm-1 (1 kcal/mol). The spectroscopic properties of the yet unobserved electronic states, A'9Δ, A1'7Δ, C9Π, C17Π, D9Σ-, and D17Σ-, are evaluated for the first time.
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Affiliation(s)
- Alexander N Smirnov
- Department of Physics, Ivanovo State University of Chemistry and Technology, Ivanovo 153000, Russia
| | - Victor G Solomonik
- Department of Physics, Ivanovo State University of Chemistry and Technology, Ivanovo 153000, Russia
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Andriola DM, Peterson KA. Coupled Cluster Study of the Heats of Formation of UF 6 and the Uranium Oxyhalides, UO 2X 2 (X = F, Cl, Br, I, and At). J Phys Chem A 2023; 127:7579-7585. [PMID: 37657073 DOI: 10.1021/acs.jpca.3c04420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
The atomization enthalpies of the U(VI) species UF6 and the uranium oxyhalides UO2X2 (X = F, Cl, Br, I, and At) were calculated using a composite relativistic Feller-Peterson-Dixon (FPD) approach based on scalar relativistic DKH3-CCSD(T) with extrapolations to the CBS limit. The inherent multideterminant nature of the U atom was mitigated by utilizing the singly charged atomic cation in all calculations with correction back to the neutral asymptote via the accurate ionization energy of the U atom. The effects of SO coupling were recovered using full 4-component CCSD(T) with contributions due to the Gaunt Hamiltonian calculated using Dirac-Hartree-Fock. The final atomization enthalpy for UF6 (752.2 kcal/mol) was within 2.5 kcal/mol of the experimental value, but unfortunately the latter carries a ±2.4 kcal/mol uncertainty that is predominantly due to the experimental uncertainty in the formation enthalpy of the U atom. The analogous value for UO2F2 (607.6 kcal/mol) was in nearly exact agreement with the experiment, but the latter has a stated experimental uncertainty of ±4.3 kcal/mol. The FPD atomization enthalpy for UO2Cl2 (540.4 kcal/mol) was within the experimental error limit of ±5.5 kcal/mol. FPD atomization energies for the non-U-containing molecules (used for reaction enthalpies) H2O and HX (X = F, Cl, Br, I, and At) were within at most 0.3 kcal/mol of their experimental values where available. The FPD atomization enthalpies, together with FPD reaction enthalpies for two different reactions, were used to determine heats of formation for all species of this work, with estimated uncertainties of ±4 kcal/mol. The calculated heat of formation for UF6 (-511.0 kcal/mol) is within 2.5 kcal/mol of the accurately known (±0.45 kcal/mol) experimental value.
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Affiliation(s)
- Devon M Andriola
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
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de Melo GF, Dixon DA. Bonding, Thermodynamics, and Spectroscopy of the Metal Borides UB 0/+/- and WB 0/+/. J Phys Chem A 2023; 127:1588-1597. [PMID: 36753327 DOI: 10.1021/acs.jpca.2c08556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The bonding and spectroscopy of the UB0/+/- and WB0/+/- molecules were examined by performing high-level electronic structure calculation on their low-lying electronic states. The calculations were performed at the SO-CASPT2 level to obtain the low-lying excited states and at the FPD level to calculate the adiabatic electronic affinities (AEA), ionization energies (IE), and bond dissociation energies (BDE). Compared to UC and UN, UB has a much denser manifold of states below 1.7 eV. The ground state of UB is predicted to be 8I5/2, and that of WB is 6Π7/2. The calculated IEs of UB and WB are 6.241 and 7.314 eV, respectively, and the corresponding AEAs are 1.160 and 1.422 eV. The BDE of UB is predicted to be 223.1 kJ/mol, which is considerably lower than those predicted for UC and UN and ∼35 kJ/mol lower than the BDE of WB. NBO calculations show that the U and B are connected by two 1-electron π bonds and one 1-electron σ bond with substantial ionic character and a bond order of 1.5. There are three unpaired electrons in the 5f on U. WB has less ionic character than UB with a doubly occupied π bond and a singly occupied σ bond for a bond order of ∼1.5. The results show that the U in UB behaves more like an actinide and the W in WB more like a transition metal.
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Affiliation(s)
- Gabriel F de Melo
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
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de Melo GF, Vasiliu M, Liu G, Ciborowski S, Zhu Z, Blankenhorn M, Harris R, Martinez-Martinez C, Dipalo M, Peterson KA, Bowen KH, Dixon DA. Theoretical and Experimental Study of the Spectroscopy and Thermochemistry of UC +/0/. J Phys Chem A 2022; 126:9392-9407. [PMID: 36508745 DOI: 10.1021/acs.jpca.2c06978] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A combination of high-level ab initio calculations and anion photoelectron detachment (PD) measurements is reported for the UC, UC-, and UC+ molecules. To better compare the theoretical values with the experimental photoelectron spectrum (PES), a value of 1.493 eV for the adiabatic electron affinity (AEA) of UC was calculated at the Feller-Peterson-Dixon (FPD) level. The lowest vertical detachment energy (VDE) is predicted to be 1.500 eV compared to the experimental value of 1.487 ± 0.035 eV. A shoulder to lower energy in the experimental PD spectrum with the 355 nm laser can be assigned to a combination of low-lying excited states of UC- and excited vibrational states. The VDEs calculated for the low-lying excited electronic states of UC at the SO-CASPT2 level are consistent with the observed additional electron binding energies at 1.990, 2.112, 2.316, and 3.760 eV. Potential energy curves for the Ω states and the associated spectroscopic properties are also reported. Compared to UN and UN+, the bond dissociation energy (BDE) of UC (411.3 kJ/mol) is predicted to be considerably lower. The natural bond orbitals (NBO) calculations show that the UC0/+/- molecules have a bond order of 2.5 with their ground-state configuration arising from changes in the oxidation state of the U atom in terms of the 7s orbital occupation: UC (5f27s1), UC- (5f27s2), and UC+ (5f27s0). The behavior of the UN and UC sequence of molecules and anions differs from the corresponding sequences for UO and UF.
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Affiliation(s)
- Gabriel F de Melo
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Zhaoguo Zhu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Moritz Blankenhorn
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Rachel Harris
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | | | - Maria Dipalo
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
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de Melo GF, Vasiliu M, Liu G, Ciborowski S, Zhu Z, Blankenhorn M, Harris R, Martinez-Martinez C, Dipalo M, Peterson KA, Bowen KH, Dixon DA. Electronic Properties of UN and UN - from Photoelectron Spectroscopy and Correlated Molecular Orbital Theory. J Phys Chem A 2022; 126:7944-7953. [PMID: 36269194 DOI: 10.1021/acs.jpca.2c06012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The results of calculations of the properties of the anion UN- including electron detachment are described, which further expand our knowledge of this diatomic molecule. High-level electronic structure calculations were conducted for the UN and UN- diatomic molecules and compared to photoelectron spectroscopy measurements. The low-lying Ω states were obtained using multireference CASPT2 including spin-orbit effects up to ∼20,000 cm-1. At the Feller-Peterson-Dixon (FPD) level, the adiabatic electron affinity (AEA) of UN is estimated to be 1.402 eV and the vertical detachment energy (VDE) is 1.423 eV. The assignment of the UN excited states shows good agreement with the experimental results with a VDE of 1.424 eV. An Ω = 4 ground state was obtained for UN- which is mainly associated with the 3H ΛS state. Thermochemical calculations estimate a bond dissociation energy (BDE) for UN- (U- + N) of 665.9 kJ/mol, ∼15% larger than that of UN and UN+. The NBO analysis reveals U-N triple bonds for the UN, UN-, and UN+ species.
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Affiliation(s)
- Gabriel F de Melo
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Zhaoguo Zhu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Moritz Blankenhorn
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Rachel Harris
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | | | - Maria Dipalo
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35401, United States
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de Melo GF, Vasiliu M, Marshall M, Zhu Z, Tufekci BA, Ciborowski SM, Blankenhorn M, Harris RM, Bowen KH, Dixon DA. Experimental and Computational Description of the Interaction of H and H - with U. J Phys Chem A 2022; 126:4432-4443. [PMID: 35767645 DOI: 10.1021/acs.jpca.2c03115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The results of ab initio correlated molecular orbital theory electronic structure calculations for low-lying electronic states are presented for UH and UH- and compared to photoelectron spectroscopy measurements. The calculations were performed at the CCSD(T)/CBS and multireference CASPT2 including spin-orbit effects by the state interacting approach levels. The ground states of UH and UH- are predicted to be 4Ι9/2 and 5Λ6, respectively. The spectroscopic parameters Te, re, ωe, ωexe, and Be were obtained, and potential energy curves were calculated for the low energy Ω states of UH. The calculated adiabatic electron affinity is 0.468 eV in excellent agreement with an experimental value of 0.462 ± 0.013 eV. The lowest vertical detachment energy was predicted to be 0.506 eV for the ground state, and the adiabatic ionization energy (IE) is predicted to be 6.116 eV. The bond dissociation energy (BDE) and heat of formation values of UH were obtained using the IE calculated at the Feller-Peterson-Dixon level. For UH, UH-, and UH+, the BDEs were predicted to be 225.5, 197.9, and 235.5 kJ/mol, respectively. The BDE for UH is predicted to be ∼20% lower in energy than that for ThH. The analysis of the natural bond orbitals shows a significant U+H- ionic component in the bond of UH.
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Affiliation(s)
- Gabriel F de Melo
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35401, United States
| | - Mary Marshall
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Zhaoguo Zhu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Burak A Tufekci
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra M Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Moritz Blankenhorn
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Rachel M Harris
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35401, United States
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Zhao J, Chi CX, Meng LY, Jiang XL, Grunenberg J, HU HS, Zhou M, Li J, Schwarz W. Cis- and Trans-Binding Influences in [NUO · (N2)n]+ . J Chem Phys 2022; 157:054301. [DOI: 10.1063/5.0098068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Uranium nitride-oxide cations [NUO]+ and their complexes with equatorial N2 ligands, [NUO·(N2) n]+ ( n=1-7), were synthesized in the gas phase. Mass-selected infrared photo-dissociation spectroscopy and quantum-chemical calculations confirm [NUO·(N2)5]+ as the sterically fully coordinated cation, with electronic singlet ground state of 1A1, linear [NUO]+ core, and C5v structure. The short N-U bond distances and high stretching modes, with slightly elongated U-O bond distances and lowered stretching modes, are rationalized as due to cooperative covalent and dative [ǀN≡U≡Oǀ]+ triple bonds. The mutual trans-interaction through the flexible electronic U-5f6d7sp valence shell, and the linearly increasing perturbation by an increasing number of equatorial dative N2 ligands are rationalized. It highlights the bonding and distinctiveness of uranium chemistry.
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Affiliation(s)
| | | | - Lu-Yan Meng
- East China University of Technology, Nanchang, China
| | - Xue-Lian Jiang
- Southern University of Science and Technology, Shenzhen, China
| | | | | | | | - Jun Li
- Tsinghua University, China
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Marks JH, Rittgers BM, Van Stipdonk MJ, Duncan MA. Photodissociation and Infrared Spectroscopy of Uranium-Nitrogen Cation Complexes. J Phys Chem A 2021; 125:7278-7288. [PMID: 34387501 DOI: 10.1021/acs.jpca.1c05823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Laser vaporization of uranium in a pulsed supersonic expansion of nitrogen is used to produce complexes of the form U+(N2)n (n = 1-8). These ions are mass selected in a reflectron time-of-flight spectrometer and studied with visible and UV laser fixed-frequency photodissociation and with tunable infrared laser photodissociation spectroscopy. The dissociation patterns and spectroscopy of U+(N2)n indicate that N2 ligands are intact molecules and that there is no insertion chemistry resulting in UN+ or NUN+. Fixed frequency photodissociation at 532 and 355 nm indicate that the U+-N2 bond dissociation energy varies little with changing coordination. The photon energy and the number of ligands eliminated allow an estimate of the average U+-N2 dissociation energy of 12 kcal/mol. Infrared bands are observed for these complexes near the N-N stretch vibration via elimination of N2 molecules. These resonances are observed to be shifted about 130 cm-1 to the red from the free-N2 frequency for complexes with n = 3-8. Density functional theory indicates that U+ is most stable in the sextet state in these complexes and that N2 molecules bind in end-on configurations. The fully coordinated complex is predicted to be U+(N2)8, which has a cubic structure. The vibrational frequencies predicted by theory are consistently lower than those in the experiment, independent of the isomeric structure or spin state of the complexes. Despite its failure to reproduce the infrared spectra, theory provides an average U+-N2 dissociation energy of 11.8 ± 0.5 kcal/mol, in good agreement with the value from the experiments.
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Affiliation(s)
- J H Marks
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - B M Rittgers
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - M J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, United States
| | - M A Duncan
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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Liu G, Zhang C, Ciborowski SM, Asthana A, Cheng L, Bowen KH. Mapping the Electronic Structure of the Uranium(VI) Dinitride Molecule, UN 2. J Phys Chem A 2020; 124:6486-6492. [PMID: 32700533 DOI: 10.1021/acs.jpca.0c03735] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A combined anion photoelectron spectroscopic and relativistic coupled-cluster computational study of the electronic structure of the UN2 molecule is presented. Because the photoelectron spectrum of the uranium dinitride negative ion, UN2-, directly reflects the electronic structure of neutral UN2, we have measured and relied upon the photoelectron spectrum of the UN2- anion as a means of mapping the electronic structure of neutral UN2. In addition to the electron affinity of the UN2 ground state, energy levels of the UN2 excited states were well characterized by the close interplay between the experiment and high-level theory. We found that both electron attachment and electronic excitation significantly bend the UN2 molecule and elongate its U≡N bond. Implications for the activation of UN2 are discussed.
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Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Chaoqun Zhang
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra M Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Ayush Asthana
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Lan Cheng
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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