1
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Kiataki MB, Varella MTDN, Coutinho K, Rabilloud F. Novel Approach for Predicting Vertical Electron Attachment Energies in Bulk-Solvated Molecules. J Chem Theory Comput 2024; 20:4893-4900. [PMID: 38783835 DOI: 10.1021/acs.jctc.4c00256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
When low-energy electrons interact with molecules, they can give rise to transient anion states commonly known as resonances. These states are formed through vertical electron attachment processes and have the potential to induce various forms of DNA lesions, including base damage, single- and double-strand breaks, cross-links, and clustered lesions that are challenging to repair. So far, most experimental and theoretical studies have investigated the formation of resonances of (bio)molecules in the gas phase or in microsolvated environments. Since cellular environments are mainly composed of water molecules, it is crucial to understand how bulk water affects the resonances of (bio)molecules. Given the existing gap in studies on resonances of bulk-solvated molecules, we propose a novel theoretical-computational approach to address this void. Our approach combines the multibasis-set (time-dependent-)density functional theory and self-consistent sequential quantum mechanics/molecular mechanics polarizable electrostatic embedding methods. We apply this combined methodology to predict the vertical electron attachment energies of 1-methyl-5-nitroimidazole (1M5NI), a well-known radiosensitizer model, in bulk water. In addition, we analyze the rapid mutual polarization between the resonances (both shape- and core-excited) of 1M5NI and the surrounding bulk water environment. For comparison, we also studied the isolated and microsolvated 1M5NI. Overall, while the polarization of the environment is clearly sensitive to the solute charge, causing a significant impact on the vertical electron affinity and consequently on the attachment electron energies, it does not have a significant impact on the excitation energies of the anion.
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Affiliation(s)
- Matheus B Kiataki
- Universite Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69100, France
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1731, São Paulo 05508-090, São Paulo, Brazil
| | - Márcio T do N Varella
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1731, São Paulo 05508-090, São Paulo, Brazil
| | - Kaline Coutinho
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1731, São Paulo 05508-090, São Paulo, Brazil
| | - Franck Rabilloud
- Universite Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69100, France
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2
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Ghosal A, Joshi P, Voora VK. Taming Negative Ion Resonances Using Nonlocal Exchange-Correlation Functionals. J Phys Chem Lett 2024; 15:5994-6001. [PMID: 38814272 DOI: 10.1021/acs.jpclett.4c00717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
The characterization of negative ion resonances poses a fundamental challenge to density functional methods due to the unbound nature of resonances. To overcome this challenge, we propose one-particle nonlocal exchange-correlation (xc) potentials combining the exact-exchange (EXX) and the random phase approximation (RPA) correlation potentials. The negative ion resonances are identified by perturbing the real Hermitian nonlocal xc potentials using complex absorbing local potentials. Our studies show that the nonlocal EXX+RPA potential significantly enhances the description of positions and widths of negative ion resonance states compared to potentials that exclude dynamic polarization in RPA or include only EXX. The use of low-scaling algorithms simplifies the computation of the RPA potential, thereby providing a practical solution for resonance-state characterization within the density functional framework. A theoretical framework and the underlying assumptions required for combining real Hermitian nonlocal xc potentials with complex local potentials are discussed.
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Affiliation(s)
- Abhisek Ghosal
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Pulkit Joshi
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Vamsee K Voora
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
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3
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Falcetta MF, Fair MC, Slimak SR, Jordan KD, Sommerfeld T. Use of bound state methods to calculate partial and total widths of shape resonances. Phys Chem Chem Phys 2023; 25:31028-31039. [PMID: 37938910 DOI: 10.1039/d3cp04154a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
In this work we study the 2Π resonances of a two-site model system designed to mimic a smooth transition from the 2Πg temporary anion of N2 to the 2Π temporary anion of CO. The model system possesses the advantage that scattering and bound state (L2) methods can be directly compared without obfuscating electron-correlation effects. Specifically, we compare resonance parameters obtained with the complex Kohn variational (CKV) method with those from stabilization, complex absorbing potential, and regularized analytical continuation calculations. The CKV calculations provide p-wave and d-wave widths, the sum of which provides a good approximation of the total width. Then we demonstrate that the width obtained with modified bound state methods depends on the basis set employed: It can be the total width, a partial width, or an ill-defined sum of partial widths. Provided the basis set is chosen appropriately, widths from bound state methods agree well with the CKV results.
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Affiliation(s)
| | - Mark C Fair
- Departments of Mechanical Engineering and Physics, Grove City College, Grove City, PA 16127, USA
| | - Stephen R Slimak
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Kenneth D Jordan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Thomas Sommerfeld
- Department of Chemistry, Southeastern Louisiana University, Hammond, LA 70402, USA
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4
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Das S, Samanta K. Recent Advances in the Study of Negative-Ion Resonances Using Multiconfigurational Propagator and a Complex Absorbing Potential. Chemphyschem 2023; 24:e202200546. [PMID: 36223261 DOI: 10.1002/cphc.202200546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/12/2022] [Indexed: 02/03/2023]
Abstract
The transient resonances are a challenge to bound state quantum mechanics. These states lie in the continuum part of the spectrum of the Hamiltonian. For this, one has to treat a continuum problem due to electron-molecule scattering and the many-electron correlation problem simultaneously. Moreover, the description of a resonance requires a wavefunction that bridges the part that resembles a bound state with another that resembles a continuum state such that the continuity of the wavefunction and its first derivative with respect to the distance between the incoming projectile and the target is maintained. A review of the recent advances in the theoretical investigation of the negative-ion resonances (NIR) is presented. The NIRs are ubiquitous in nature. They result from the scattering of electrons off of an atomic or molecular target. They are important for numerous chemical processes in upper atmosphere, space and even biological systems. A contextual background of the existing theoretical methods as well as the newly-developed multiconfigurational propagator tools based on a complex absorbing potential are discussed.
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Affiliation(s)
- Subhasish Das
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Kansapada, Argul, 752050, India
| | - Kousik Samanta
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Kansapada, Argul, 752050, India
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5
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Das S, Samanta K. Investigation of electron-induced scattering resonances using a multiconfigurational polarization propagator and a complex absorbing potential. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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6
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Das S, Samanta K. Investigation of negative-ion resonances using a subspace-projected multiconfigurational electron propagator perturbed with a complex absorbing potential. J Chem Phys 2022; 156:224110. [PMID: 35705417 DOI: 10.1063/5.0089912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The transient negative-ion resonances found in scattering experiments are important intermediates in many chemical processes. These metastable states correspond to the continuum part of the Hamiltonian of the projectile-target composite system. Usual bound-state electronic structure methods are not applicable for these. In this work, we develop a subspace-projection method in connection with an electron propagator (EP) defined in terms of a complete-active-space self-consistent-field initial state. The target Hamiltonian (Ĥ) is perturbed by a complex absorbing potential (CAP) for the analytical continuation of the spectrum of Ĥ to complex eigenvalues associated with the continuum states. The resonance is identified as a pole of the EP, which is stable with respect to variations in the strength of the CAP. The projection into a small subspace reduces the size of the complex matrices to be diagonalized, minimizes the computational cost, and affords some insight into the orbitals that are likely to play some role in the capture of the projectile. Two molecular (Πg2N2 - and 2Π CO-) and an atomic shaperesonance (2P Be-) are investigated using this method. The position and width of the resonances are in good agreement with the previously reported values.
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Affiliation(s)
- Subhasish Das
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
| | - Kousik Samanta
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
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7
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Thiam G, Rabilloud F. Multi-Basis-Set (TD-)DFT Methods for Predicting Electron Attachment Energies. J Phys Chem Lett 2021; 12:9995-10001. [PMID: 34618456 DOI: 10.1021/acs.jpclett.1c02980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The interaction of low-energy electron collisions with molecules may lead to temporary anions via resonant processes. While experimental measurements, e.g., electron transmission spectroscopy or dissociation electron attachment spectroscopy, are efficient to characterize the temporary anions, simulating the electron attachment is still very challenging. Here, we propose a methodology to calculate the resonance energies of the electron attachment using ab initio (TD)-DFT calculations together with two different basis sets: a large basis set with diffuse functions to compute the vertical electron affinity and a smaller one to calculate the excitation energy of the anion. To demonstrate the capabilities and the reliability of this computational approach, 53 resonance energies from 18 molecules are calculated and compared to experimental data.
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Affiliation(s)
- Guillaume Thiam
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, F-69622 Villeurbanne, France
| | - Franck Rabilloud
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, F-69622 Villeurbanne, France
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8
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Dann R, Elbaz G, Berkheim J, Muhafra A, Nitecki O, Wilczynski D, Moiseyev N. Variational Solutions for Resonances by a Finite-Difference Grid Method. Molecules 2021; 26:molecules26175248. [PMID: 34500682 PMCID: PMC8434025 DOI: 10.3390/molecules26175248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 11/29/2022] Open
Abstract
We demonstrate that the finite difference grid method (FDM) can be simply modified to satisfy the variational principle and enable calculations of both real and complex poles of the scattering matrix. These complex poles are known as resonances and provide the energies and inverse lifetimes of the system under study (e.g., molecules) in metastable states. This approach allows incorporating finite grid methods in the study of resonance phenomena in chemistry. Possible applications include the calculation of electronic autoionization resonances which occur when ionization takes place as the bond lengths of the molecule are varied. Alternatively, the method can be applied to calculate nuclear predissociation resonances which are associated with activated complexes with finite lifetimes.
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Affiliation(s)
- Roie Dann
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- Correspondence: (R.D.); (N.M.)
| | - Guy Elbaz
- Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel; (G.E.); (A.M.); (D.W.)
| | | | - Alan Muhafra
- Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel; (G.E.); (A.M.); (D.W.)
| | - Omri Nitecki
- Schulich Faculty of Chemistry, Solid State Institute and Faculty of Physics, Technion—Israel Institute of Technology, Haifa 3200003, Israel;
| | - Daniel Wilczynski
- Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel; (G.E.); (A.M.); (D.W.)
| | - Nimrod Moiseyev
- Schulich Faculty of Chemistry, Solid State Institute and Faculty of Physics, Technion—Israel Institute of Technology, Haifa 3200003, Israel;
- Solid State Institute and Faculty of Physics, Technion—Israel Institute of Technology, Haifa 3200003, Israel
- Correspondence: (R.D.); (N.M.)
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9
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Slimak SR, Jordan KD, Falcetta MF. Role of Overlap between the Discrete State and Pseudocontinuum States in Stabilization Calculations of Metastable States. J Phys Chem A 2021; 125:4401-4408. [PMID: 34009997 DOI: 10.1021/acs.jpca.1c02699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In a diabatic picture metastable states subject to decay by electron detachment can be viewed as arising from the coupling between a discrete state and a continuum. In treating such states with bound-state quantum chemical methods, the continuum is discretized. In this study, we elucidate the role of overlap in this interaction in the application of the stabilization method to temporary anion states. This is accomplished by use of a minimalist stabilization calculation on the lowest energy l=2 (D) resonance of the finite spherical well potential using two basis functions, one describing the diabatic discrete state and the other a diabatic discretized continuum state. We show that even such a simple treatment predicts a complex resonance energy in good agreement with the exact result. If the energy of the discrete state is assumed to be constant, which is tantamount to orthogonalizing the discretized continuum state to the discrete state, it is demonstrated that the square of the off-diagonal coupling has a maximum close to the crossing point of the orthogonalized diabatic curves and that the curvature in the coupling is responsible for the complex stationary point associated with the resonance. Moreover, this curvature is a consequence of the overlap between the two diabatic states.
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Affiliation(s)
- Stephen R Slimak
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Kenneth D Jordan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Michael F Falcetta
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, United States
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10
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Davis JU, Phung QM, Yanai T, Ehara M, Sommerfeld T. Lifetimes of Be32– and Mg32– Cluster Dianions. J Phys Chem A 2021; 125:3579-3588. [DOI: 10.1021/acs.jpca.1c00770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jeremy U. Davis
- Department of Chemistry and Physics, Southeastern Louisiana University, SLU 10878, Hammond, Louisiana 70402, United States
| | - Quan Manh Phung
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - Takeshi Yanai
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Aichi 464-8602, Japan
- Japan Science and Technology Agency, PRESTO, Kawaguchi, Saitama 332-0012, Japan
| | - Masahiro Ehara
- Institute for Molecular Science and Research Center for Computational Science, Okazaki 444-8585, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8520, Japan
| | - Thomas Sommerfeld
- Department of Chemistry and Physics, Southeastern Louisiana University, SLU 10878, Hammond, Louisiana 70402, United States
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11
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Carlson BJ, Falcetta MF, Slimak SR, Jordan KD. A Fresh Look at the Role of the Coupling of a Discrete State with a Pseudocontinuum State in the Stabilization Method for Characterizing Metastable States. J Phys Chem Lett 2021; 12:1202-1206. [PMID: 33481599 DOI: 10.1021/acs.jpclett.0c03738] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The stabilization method is widely used to theoretically characterize temporary anions and other systems displaying resonances. In this approach, information about a metastable state is encoded in the interaction of a diabatic discrete state and discretized continuum solutions, the energy of which are varied by scaling the extent of the basis set. In this work, we identify the aspects of the coupling between the discrete state and the discretized continuum states that encode information about the existence of complex stationary points and, hence, complex resonance energies in stabilization graphs. This allows us to design a simple two-level model for extracting complex resonance energies from stabilization graphs. The resulting model is applied to the 2Πg anion state of N2.
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Affiliation(s)
- Benjamin J Carlson
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127 United States
| | - Michael F Falcetta
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127 United States
| | - Stephen R Slimak
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Kenneth D Jordan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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12
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Thodika M, Mackouse N, Matsika S. Description of Two-Particle One-Hole Electronic Resonances Using Orbital Stabilization Methods. J Phys Chem A 2020; 124:9011-9020. [DOI: 10.1021/acs.jpca.0c07904] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mushir Thodika
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Nathan Mackouse
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Spiridoula Matsika
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122, United States
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13
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Dobulis MA, Thompson MC, Sommerfeld T, Jarrold CC. Temporary anion states of fluorine substituted benzenes probed by charge transfer in O 2 -·C 6H 6-xF x (x = 0-5) ion-molecule complexes. J Chem Phys 2020; 152:204309. [PMID: 32486698 DOI: 10.1063/5.0011321] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The broadband photoelectron source realized by detaching O2 -·X (X = neutral unsaturated molecule) complexes offers a unique opportunity to probe temporary anion states of the unsaturated species. Detachment of the ion molecule complex typically accesses a dissociative portion of the neutral potential, creating a continuum electron source that can undergo scattering with X. We present the application of this new approach to electron-neutral scattering toward a study of the series of fluorinated benzenes via photoelectron spectroscopy of O2 -·C6H6-xFx (x = 0-6) measured with several photon energies. We compare these spectra to the reference O2 -·hexane spectrum and observe evidence of temporary anion states of C6H6-xFx for species with x = 0-5 in the form of enhanced signal intensity at electron kinetic energies coinciding with the energies of the temporary anions. Furthermore, we observe autodetachment features in the x = 3, 5 spectra. Results of calculations on the isolated symmetric isomer of C6H3F3 suggest that the molecule cannot support a weakly-bound non-valence state that could be associated with the observed autodetachment. However, C6HF5 - is predicted to support a valence bound state, which, if produced by charge transfer from O2 - with sufficient vibrational energy, may undergo autodetachment. Finally, the [O2·C6F6]- spectrum is unique insofar as the spectrum is substantially higher in binding energy and qualitatively different from the x = 0-5 spectra. This result suggests much stronger interactions and charge delocalization between O2 - and C6F6.
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Affiliation(s)
- Marissa A Dobulis
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA
| | - Michael C Thompson
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA
| | - Thomas Sommerfeld
- Department of Chemistry and Physics, Southeast Louisiana University, SLU 10878, Hammond, Louisiana 70402, USA
| | - Caroline Chick Jarrold
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA
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14
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Phung QM, Komori Y, Yanai T, Sommerfeld T, Ehara M. Combination of a Voronoi-Type Complex Absorbing Potential with the XMS-CASPT2 Method and Pilot Applications. J Chem Theory Comput 2020; 16:2606-2616. [PMID: 32105477 DOI: 10.1021/acs.jctc.9b01032] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Electronic resonances are metastable (N + 1) electron states, in other words, discrete states embedded in an electronic continuum. While great progress has been made for certain types of resonances-for example, temporary anions created by attaching one excess electron to a closed shell neutral-resonances in general remain a great challenge of quantum chemistry because a successful description of the decay requires a balanced description of the bound and continuum aspect of the resonance. Here, a smoothed Voronoi complex absorbing potential (CAP) is combined with the XMS-CASPT2 method, which enables us to address the balance challenge by appropriate choice of the CAS space. To reduce the computational cost, the method is implemented in the projected scheme. In this pilot application, three temporary anions serve as benchmarks: the π* resonance state of formaldehyde; the π* and σ* resonance states of chloroethene as functions of the C-Cl bond dissociation coordinate; and the 4Πu and 2Πu resonance states of N2-. The convergence of the CAP/XMS-CASPT2 results has been systematically examined with respect to the size of the active space. Resonance parameters predicted by the CAP/XMS-CASPT2 method agree well with CAP/SAC-CI results (deviations of about 0.15 eV); however, as expected, CAP/XMS-CASPT2 has clear advantages in the bond dissociation region. The advantages of CAP/XMS-CASPT2 are further demonstrated in the calculations of 4Πu and 2Πu resonance states of N2- including their 3Σu+ and 3Δu parent states. Three of the involved states (2Πu, 3Σu+, and 3Δu) possess multireference character, and CAP/XMS-CASPT2 can easily describe these states with a relatively modest active space.
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Affiliation(s)
- Quan Manh Phung
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Yuki Komori
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Takeshi Yanai
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.,Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.,Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Thomas Sommerfeld
- Department of Chemistry and Physics, Southeastern Louisiana University, SLU 10878, Hammond, Louisiana 70402, United States
| | - Masahiro Ehara
- Institute for Molecular Science and Research Center for Computational Science, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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15
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Med J, Sršeň Š, Slavíček P, Domaracka A, Indrajith S, Rousseau P, Fárník M, Fedor J, Kočišek J. Vibrationally Mediated Stabilization of Electrons in Nonpolar Matter. J Phys Chem Lett 2020; 11:2482-2489. [PMID: 32154726 DOI: 10.1021/acs.jpclett.0c00278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We explore solvation of electrons in nonpolar matter, here represented by butadiene clusters. Isolated butadiene supports only the existence of transient anions (resonances). Two-dimensional electron energy loss spectroscopy shows that the resonances lead to an efficient vibrational excitation of butadiene, which can result into the almost complete loss of energy of the interacting electron. Cluster-beam experiments show that molecular clusters of butadiene form stable anions, however only at sizes of more than 9 molecular units. We have calculated the distribution of electron affinities of clusters using classical and path integral molecular dynamics simulations. There is almost a continuous transition from the resonant to the bound anions with an increase in cluster size. The comparison of the classical and quantum dynamics reveals that the electron binding is strongly supported by molecular vibrations, brought about by nuclear zero-point motion and thermal agitation. We also inspected the structure of the solvated electron, finding it well localized.
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Affiliation(s)
- Jakub Med
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
| | - Štěpán Sršeň
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
| | - Petr Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - A Domaracka
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - S Indrajith
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - P Rousseau
- Normandie Univ., ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - M Fárník
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - J Fedor
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - J Kočišek
- J. Heyrovský Institute of Physical Chemistry v.v.i., The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
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16
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Thodika M, Fennimore M, Karsili TNV, Matsika S. Comparative study of methodologies for calculating metastable states of small to medium-sized molecules. J Chem Phys 2019; 151:244104. [DOI: 10.1063/1.5134700] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Mushir Thodika
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA
| | - Mark Fennimore
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA
| | - Tolga N. V. Karsili
- Department of Chemistry, University of Louisiana, Lafayette, Louisiana 70504, USA
| | - Spiridoula Matsika
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA
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17
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Kairalapova A, Jordan KD, Falcetta MF, Steiner DK, Sutter BL, Gowen JS. Prediction of a Non-Valence Temporary Anion State of (NaCl)2. J Phys Chem B 2019; 123:9198-9205. [DOI: 10.1021/acs.jpcb.9b07782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Arailym Kairalapova
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Kenneth D. Jordan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Michael F. Falcetta
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, United States
| | - Dalton K. Steiner
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, United States
| | - Brittni L. Sutter
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, United States
| | - Josiah S. Gowen
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, United States
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18
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Mensa-Bonsu G, Tozer DJ, Verlet JRR. Photoelectron spectroscopic study of I -·ICF 3: a frontside attack S N2 pre-reaction complex. Phys Chem Chem Phys 2019; 21:13977-13985. [PMID: 30534728 DOI: 10.1039/c8cp06593d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodetachment and 2D photoelectron spectra of the mass-selected I-·CF3I complex are presented together with electronic structure calculations. Calculations show that the I- is located at the iodine side of CF3I. Vertical and adiabatic detachment energies were measured at 4.03 and approximately 3.8 eV, respectively. The photoelectron spectra and molecular orbitals show a significant covalent bonding character in the cluster. The presence of electronic excited states is observed. Below threshold, iodide is generated which can be assigned to the photoexcitation of degenerate charge-transfer bands from the off-axis p-orbitals localised on iodide. Near the onset of two spin-orbit thresholds, bright excited states are seen in the experiment and calculations. Excitation of these leads to the formation of slow electrons. The spectroscopy of I-·CF3I is compared to the well-studied I-·CH3I cluster, a pre-reaction complex in the text-book I- + CH3I SN2 reaction. Despite the reversed stereodynamics (i.e. inversion of the CX3 between X = H and F) of the SN2 reaction, striking similarities are seen. Both complexes possess charge transfer excited states near their respective vertical detachment energies and exhibit vibrational structure in their photoelectron spectra. The strong binding is consistent with observations in crossed molecular beam studies and molecular dynamics simulations that suggest that iodine as a leaving group in an SN2 reaction affects the reaction dynamics.
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19
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Simons J. Concluding remarks for advances in ion spectroscopy Faraday Discussion. Faraday Discuss 2019; 217:623-643. [PMID: 31169273 DOI: 10.1039/c9fd00058e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Because the Introductory Lecture of this Faraday Discussion emphasized the recent history and exciting developments in the fields of experimental methods and applications of gaseous ion spectroscopy, these Concluding Remarks are, by design, directed somewhat more toward the roles played by theory. In discussing both the experimental and theoretical studies of gaseous ions, it is important to recognize and appreciate the delicate balance workers in the field are pursuing in terms of methodological/tool development and applications to current-day pressing problems in chemistry, physics, materials science, and biology. Without both components of modern research in this field, progress will not be efficient. Substantial discussion is included about the reductive approach that is commonly used to attempt to connect studies of ions in the gas phase (i.e., as isolated species) with properties of these ions as they exist in nature. Issues of how small a model system can be, to what extent surroundings/solvation can be addressed, and how our experimental or theoretical tools might limit us are all discussed in some detail. The current ability of theory to assist in the interpretation of experimental spectral data on gaseous ions is discussed, as are several of the most pressing limitations of theory on this front. Finally, the author offers his thoughts about what advances/improvements in theory are needed and the outlook for when they might be expected, and urges the experimental community to remain in close contact with theory groups developing new methods so that progress can be optimized.
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Affiliation(s)
- Jack Simons
- Dept. of Chemistry, Henry Eyring Center for Theoretical Chemistry, University of Utah, USA.
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20
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Landau A, Haritan I. The Clusterization Technique: A Systematic Search for the Resonance Energies Obtained via Padé. J Phys Chem A 2019; 123:5091-5105. [DOI: 10.1021/acs.jpca.8b12573] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arie Landau
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Idan Haritan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
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21
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Jochim B, Berry B, Severt T, Feizollah P, Zohrabi M, P KR, Wells E, Carnes KD, Ben-Itzhak I. Dependence on the Initial Configuration of Strong Field-Driven Isomerization of C 2H 2 Cations and Anions. J Phys Chem Lett 2019; 10:2320-2327. [PMID: 31002520 DOI: 10.1021/acs.jpclett.9b00520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We have investigated the femtosecond laser-induced fragmentation of C2H2 q ion beam targets in various initial configurations, including acetylene (linear HCCH), vinylidene (H2CC), and cis/ trans. The initial configuration is shown to have a tremendous impact on the branching ratio of acetylene-like (CH q1 + CH q2) and vinylidene-like (C q1' + CH2 q2') dissociation of a specific C2H2 q molecular ion. In particular, whereas C2H2+ generated from C2H2, a linear HCCH target, exhibits comparable levels of acetylene-like and vinylidene-like fragmentation, vinylidene or cis/ trans configuration ion beams preferably undergo vinylidene-like fragmentation, with an acetylene branching ratio ranging from 13.9% to zero.
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Affiliation(s)
- Bethany Jochim
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - Ben Berry
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - T Severt
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - Peyman Feizollah
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - M Zohrabi
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - Kanaka Raju P
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - E Wells
- Department of Physics , Augustana University , Sioux Falls , South Dakota 57197 , United States
| | - K D Carnes
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
| | - I Ben-Itzhak
- J. R. Macdonald Laboratory, Department of Physics , Kansas State University , Manhattan , Kansas 66506 , United States
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22
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Bhattacharya D, Pawlak M, Ben-Asher A, Landau A, Haritan I, Narevicius E, Moiseyev N. Quantum Effects in Cold Molecular Collisions from Spatial Polarization of Electronic Wave Function. J Phys Chem Lett 2019; 10:855-863. [PMID: 30730751 DOI: 10.1021/acs.jpclett.8b03807] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The quantum phenomena of electronic and nuclear resonances are associated with structures in measured cross sections. Such structures were recently reported in a cold chemistry experiment of ground-state hydrogen isotopologues (H2/HD) colliding with helium atoms in the excited triplet P-state (He(23P)) [Shagam et al. Nature Chem. 2015, 7, 921], but a theoretical explanation of their appearance was not given. This work presents a quantum explanation and simulation of this experiment, which are strictly based on ab initio calculations. We incorporate complex potential energy surfaces into adiabatic variational theory, thereby reducing the multidimensional scattering process to a series of uncoupled 1D scattering "gedanken experiments". Our theoretical result, which is in remarkable agreement with the experimental data, manifests that the structures in the observed reaction rate coefficient are due to the spatial arrangement of the excited He p-orbitals with respect to the interaction axis, consequently changing the system from a normal two-rotor model to a three-rotor one. This theoretical scheme can be applied to explain and predict cross sections or reaction rate coefficients for any resonance-related phenomenon.
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Affiliation(s)
- Debarati Bhattacharya
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 32000 , Israel
| | - Mariusz Pawlak
- Faculty of Chemistry , Nicolaus Copernicus University in Toruń , Gagarina 7 , 87-100 Toruń , Poland
| | - Anael Ben-Asher
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 32000 , Israel
| | - Arie Landau
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 32000 , Israel
| | - Idan Haritan
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 32000 , Israel
| | - Edvardas Narevicius
- Department of Chemical Physics , Weizmann Institute of Science , Rehovot 76100 , Israel
| | - Nimrod Moiseyev
- Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 32000 , Israel
- Department of Physics , Technion-Israel Institute of Technology , Haifa 32000 , Israel
- Russell-Berrie Nanotechnology Institute , Technion-Israel Institute of Technology , Haifa 32000 , Israel
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23
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Landau A. Shaping and controlling stabilisation graphs for calculating stable complex resonance energies. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1575993] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Arie Landau
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, Israel
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24
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von Szentpály L. Eliminating symmetry problems in electronegativity equalization and correcting self-interaction errors in conceptual DFT. J Comput Chem 2018; 39:1949-1969. [DOI: 10.1002/jcc.25356] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 11/09/2022]
Affiliation(s)
- László von Szentpály
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55; Stuttgart D-70569 Germany
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25
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Benda Z, Rickmeyer K, Jagau TC. Structure Optimization of Temporary Anions. J Chem Theory Comput 2018; 14:3468-3478. [DOI: 10.1021/acs.jctc.8b00128] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zsuzsanna Benda
- Department of Chemistry, University of Munich (LMU), D-81377 Munich, Germany
| | - Kerstin Rickmeyer
- Department of Chemistry, University of Munich (LMU), D-81377 Munich, Germany
| | - Thomas-C. Jagau
- Department of Chemistry, University of Munich (LMU), D-81377 Munich, Germany
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26
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Fennimore MA, Matsika S. Core-excited and shape resonances of uracil. Phys Chem Chem Phys 2018; 18:30536-30545. [PMID: 27785493 DOI: 10.1039/c6cp05342d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Attachment of an electron to nucleobases leads to metastable anion states called resonances. There are two types of electronic resonances present in the nucleobases. Shape resonances occur when the electron is attached to one of the previously unoccupied π* orbitals of the base. An electron can also be attached to an electronically excited state leading to core-excited or Feshbach resonances. In this work we present both types of resonances of uracil, a nucleobase present in RNA. Both the positions and widths of the resonances have been calculated using a stabilization method coupled with high level electronic structure methods. Core-excited resonances which are accessed with electrons of energy >4.6 eV are expected to play an important role in the dissociative electron attachment of uracil. Mixing between configurations corresponding to shape and core-excited resonances is also present which complicates the theoretical treatment of this system and necessitates multiconfigurational approaches for a proper description.
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27
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Meneses G, Widmann C, Cunha T, Gil A, Ferreira da Silva F, Calhorda MJ, Limão-Vieira P. Unravelling the dissociation pathways of acetic acid upon electron transfer in potassium collisions: experimental and theoretical studies. Phys Chem Chem Phys 2018; 19:1083-1088. [PMID: 27942639 DOI: 10.1039/c6cp06375f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron transfer in alkali-molecule collisions with gas phase acetic acid and its deuterated analogues resulting in OH- formation requires considerable internal rearrangement in the temporary negative ion. At a collision energy well above the threshold of negative ion formation, electron transfer from potassium to CH3COOH/CH3COOD and CD3COOH results not only in H transfer from CH3 to COOH/COOD, but also in H release from COOH and subsequent rearrangement to eliminate OH-. These processes are also investigated by theoretical post-Hartree-Fock and DFT calculations. The combination of both studies reveals that the most favourable intermediate mechanism occurs via diol formation. Such intramolecular H transfer is reported here for the first time in the context of electron transfer induced dissociation experiments in alkali-molecule collisions. A comprehensive fragmentation study is presented and dissociation mechanisms are suggested.
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Affiliation(s)
- G Meneses
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Campus de Caparica, 2829-516 Caparica, Portugal.
| | - C Widmann
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Campus de Caparica, 2829-516 Caparica, Portugal.
| | - T Cunha
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Campus de Caparica, 2829-516 Caparica, Portugal.
| | - A Gil
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - F Ferreira da Silva
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Campus de Caparica, 2829-516 Caparica, Portugal.
| | - M J Calhorda
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - P Limão-Vieira
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Campus de Caparica, 2829-516 Caparica, Portugal.
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28
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Jagau TC. Non-iterative triple excitations in equation-of-motion coupled-cluster theory for electron attachment with applications to bound and temporary anions. J Chem Phys 2018; 148:024104. [DOI: 10.1063/1.5006374] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Thomas-C. Jagau
- Department of Chemistry, University of Munich (LMU), D-81377 Munich, Germany
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29
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Samanta K, Tsogbayar T, Zhang SB, Yeager DL. Electron–Atom and Electron–Molecule Resonances: Some Theoretical Approaches Using Complex Scaled Multiconfigurational Methods. ADVANCES IN QUANTUM CHEMISTRY 2018. [DOI: 10.1016/bs.aiq.2017.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Haritan I, Moiseyev N. On the calculation of resonances by analytic continuation of eigenvalues from the stabilization graph. J Chem Phys 2017; 147:014101. [DOI: 10.1063/1.4989867] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Idan Haritan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Nimrod Moiseyev
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
- Department of Physics, Technion-Israel Institute of Technology, Haifa 32000, Israel
- Solid State Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
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31
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White AF, Epifanovsky E, McCurdy CW, Head-Gordon M. Second order Møller-Plesset and coupled cluster singles and doubles methods with complex basis functions for resonances in electron-molecule scattering. J Chem Phys 2017. [DOI: 10.1063/1.4986950] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Kunitsa AA, Granovsky AA, Bravaya KB. CAP-XMCQDPT2 method for molecular electronic resonances. J Chem Phys 2017. [DOI: 10.1063/1.4982950] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - Ksenia B. Bravaya
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, USA
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33
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Wasserman A, Nafziger J, Jiang K, Kim MC, Sim E, Burke K. The Importance of Being Inconsistent. Annu Rev Phys Chem 2017; 68:555-581. [PMID: 28463652 DOI: 10.1146/annurev-physchem-052516-044957] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adam Wasserman
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
- Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907
| | - Jonathan Nafziger
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | - Kaili Jiang
- Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907
| | - Min-Cheol Kim
- Department of Chemistry, Yonsei University, Seoul 03722, South Korea
| | - Eunji Sim
- Department of Chemistry, Yonsei University, Seoul 03722, South Korea
| | - Kieron Burke
- Department of Chemistry, University of California, Irvine, California 92697
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34
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Bhattacharya D, Ben-Asher A, Haritan I, Pawlak M, Landau A, Moiseyev N. Polyatomic ab Initio Complex Potential Energy Surfaces: Illustration of Ultracold Collisions. J Chem Theory Comput 2017; 13:1682-1690. [DOI: 10.1021/acs.jctc.7b00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Debarati Bhattacharya
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Anael Ben-Asher
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Idan Haritan
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Mariusz Pawlak
- Faculty
of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina
7, 87-100 Toruń, Poland
| | - Arie Landau
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Nimrod Moiseyev
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
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35
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White AF, Head-Gordon M, McCurdy CW. Stabilizing potentials in bound state analytic continuation methods for electronic resonances in polyatomic molecules. J Chem Phys 2017; 146:044112. [DOI: 10.1063/1.4974761] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alec F. White
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C. William McCurdy
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Davis, California 95616, USA
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36
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Benda Z, Jagau TC. Communication: Analytic gradients for the complex absorbing potential equation-of-motion coupled-cluster method. J Chem Phys 2017; 146:031101. [DOI: 10.1063/1.4974094] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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37
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Landau A, Bhattacharya D, Haritan I, Ben-Asher A, Moiseyev N. Ab Initio Complex Potential Energy Surfaces From Standard Quantum Chemistry Packages. ADVANCES IN QUANTUM CHEMISTRY 2017. [DOI: 10.1016/bs.aiq.2016.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Vikas V, Sangwan P, Kaur R. Chemical pathways for poly-anionic isomerisation in the metastable anions of tetra-deprotonated naphthalene: an intra-molecular inter-ring proton-transfer. Phys Chem Chem Phys 2017; 19:11571-11580. [DOI: 10.1039/c7cp01006k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An intra-molecular proton-transfer between the two different aromatic rings of naphthalene in the metastable isomeric tetra-anionic species of naphthalene is revealed by this computational work.
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Affiliation(s)
- Vikas Vikas
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Poonam Sangwan
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Ramanpreet Kaur
- Quantum Chemistry Group
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160014
- India
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39
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40
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Fennimore MA, Karsili TNV, Matsika S. Mechanisms of H and CO loss from the uracil nucleobase following low energy electron irradiation. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp01345k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Uracil anion fragments into 1-IM-, H and CO when an electron is attached to the D2 anionic state in a concerted mechanism.
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41
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Falcetta MF, Fair MC, Tharnish EM, Williams LM, Hayes NJ, Jordan KD. Ab initio calculation of the cross sections for electron impact vibrational excitation of CO via the (2)Π shape resonance. J Chem Phys 2016; 144:104303. [PMID: 26979689 DOI: 10.1063/1.4943132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The stabilization method is used to calculate the complex potential energy curve of the (2)Π state of CO(-) as a function of bond length, with the refinement that separate potentials are determined for p-wave and d-wave attachment and detachment of the excess electron. Using the resulting complex potentials, absolute vibrational excitation cross sections are calculated as a function of electron energy and scattering angle. The calculated cross sections agree well with experiment.
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Affiliation(s)
- Michael F Falcetta
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, USA
| | - Mark C Fair
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, USA
| | - Emily M Tharnish
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, USA
| | - Lorna M Williams
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, USA
| | - Nathan J Hayes
- Department of Chemistry, Grove City College, Grove City, Pennsylvania 16127, USA
| | - Kenneth D Jordan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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42
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Jagau TC, Krylov AI. Characterizing metastable states beyond energies and lifetimes: Dyson orbitals and transition dipole moments. J Chem Phys 2016; 144:054113. [DOI: 10.1063/1.4940797] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Thomas-C. Jagau
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | - Anna I. Krylov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
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43
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Sangwan P, Vikas. Molecular anions of polydeprotonated naphthalenes: An investigation on the metastability and deprotonation energies using nuclear-charge stabilization method. J Chem Phys 2016; 144:044305. [DOI: 10.1063/1.4940428] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Landau A, Haritan I, Kaprálová-Žd’ánská PR, Moiseyev N. Atomic and Molecular Complex Resonances from Real Eigenvalues Using Standard (Hermitian) Electronic Structure Calculations. J Phys Chem A 2016; 120:3098-108. [DOI: 10.1021/acs.jpca.5b10685] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Petra Ruth Kaprálová-Žd’ánská
- Department
of Radiation and Chemical Physics at the Institute of Physics, Na Slovance 2, 18221 Prague, Czech Republic
- J. Heyrovsky Institute of Physical Chemistry, Dolejskova 3, 18223 Prague, Czech Republic
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Cheng HY, Chen YC, Lin CJ, Liu WC, Hsieh SH. Temporary anion states of radiosensitive halopyrimidines: Shape and core-excited resonances. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2015.10.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zuev D, Jagau TC, Bravaya KB, Epifanovsky E, Shao Y, Sundstrom E, Head-Gordon M, Krylov AI. Erratum: “Complex absorbing potentials within EOM-CC family of methods: Theory, implementation, and benchmarks” [J. Chem. Phys. 141, 024102 (2014)]. J Chem Phys 2015; 143:149901. [DOI: 10.1063/1.4932100] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Landau A, Haritan I, Kaprálová-Žďánská PR, Moiseyev N. Advantages of complex scaling only the most diffuse basis functions in simultaneous description of both resonances and bound states. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1080872] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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White AF, McCurdy CW, Head-Gordon M. Restricted and unrestricted non-Hermitian Hartree-Fock: Theory, practical considerations, and applications to metastable molecular anions. J Chem Phys 2015; 143:074103. [DOI: 10.1063/1.4928529] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alec F. White
- Department of Chemistry, Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C. William McCurdy
- Chemical Sciences Division and Ultrafast X-ray Science Laboratory, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Exploring the metastability and the pathways for polyanionic isomerization in the dianions and trianions of doubly- and triply-deprotonated benzene. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1695-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bazante AP, Davidson ER, Bartlett RJ. The benzene radical anion: A computationally demanding prototype for aromatic anions. J Chem Phys 2015; 142:204304. [DOI: 10.1063/1.4921261] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - E. R. Davidson
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Rodney J. Bartlett
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, USA
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