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Opoku E, Pawłowski F, Ortiz JV. New-Generation Electron-Propagator Methods for Molecular Electron-Binding Energies. J Phys Chem A 2024; 128:1399-1416. [PMID: 38377355 DOI: 10.1021/acs.jpca.3c08455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
A new generation of electron-propagator methods for the calculation of electron binding energies has surpassed its antecedents with respect to accuracy, efficiency, and interpretability. No adjustable parameters are introduced in these fully ab initio procedures. Numerical tests versus several databases of valence, vertical electron binding energies of closed-shell molecules and atoms have been performed. Easily interpreted self-energy approximations with cubic arithmetic scaling produce mean absolute errors (MAEs) of 0.2 and 0.3 eV for electron detachments and attachments, respectively. The most accurate explicitly renormalized methods with fifth-power arithmetic scaling yield MAEs below 0.1 eV for detachments and attachments. Approximate renormalization leads to more efficient fifth-power alternatives for electron detachments that achieve similar accuracy with fewer bottleneck operations. Composite protocols generate excellent predictions versus highly accurate basis-extrapolated standards and experiments. The validity of the diagonal self-energy approximation and the accuracy of the approximate renormalizations are confirmed. The success of these perturbative methods based on canonical Hartree-Fock orbitals rests on a Hermitized, intermediately normalized superoperator metric. The results of all of the new-generation calculations may be analyzed in terms of final-state orbital relaxation and differential correlation effects.
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Affiliation(s)
- Ernest Opoku
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
| | - Filip Pawłowski
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
| | - J V Ortiz
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
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2
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Opoku E, Pawłowski F, Ortiz JV. New-Generation Electron-Propagator Methods for Calculations of Electron Affinities and Ionization Energies: Tests on Organic Photovoltaic Molecules. J Chem Theory Comput 2024; 20:290-306. [PMID: 38150412 DOI: 10.1021/acs.jctc.3c00954] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
A new generation of ab initio electron-propagator self-energies recently superseded its antecedents' accuracy and computational efficiency in calculating vertical ionization energies (VIEs) of closed-shell molecules. (See J. Chem. Phys. 2021, 155, 204107, J. Chem. Theory Comput. 2022, 18, 4927, J. Chem. Phys. 2023, 159, 124109.) No adjustable parameters were introduced in the generation of reference orbitals or in the construction of self-energies. The same approach has been extended in this work to vertical electron affinities (VEAs). Calculations were performed on 24 conjugated, organic photovoltaic molecules with diverse functional groups. These molecules are considerably larger than those studied in previous tests on VIEs. Several new-generation self-energies produce mean absolute errors (MAEs) below 0.1 eV versus ΔCCSD(T) (i.e., total energy differences from the coupled-cluster singles, doubles, and perturbative triples method) VIEs and VEAs obtained with identical basis sets. A composite model employs cubically and quintically scaling algorithms and power-law basis-set extrapolations based on augmented double-triple or triple-quadruple ζ data. Its MAEs are near 0.05 eV versus benchmark values, with 0.03 eV error bars for the lowest VIE and the highest VEA of each molecule. A more efficient and equally accurate composite model for calculating VIEs avoids full transformations of electron repulsion integrals to the molecular orbital basis. High probability factors support the diagonal self-energy approximation, wherein Dyson orbitals are proportional to canonical, Hartree-Fock orbitals.
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Affiliation(s)
- Ernest Opoku
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
| | - Filip Pawłowski
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
| | - J V Ortiz
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
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3
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G0W0 based on time-dependent auxiliary density perturbation theory. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02755-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Lew-Yee JFH, Flores-Moreno R, Morales JL, M Del Campo J. Asymmetric Density Fitting with Modified Cholesky Decomposition Applied to Second-Order Electron Propagator. J Chem Theory Comput 2020; 16:1597-1605. [PMID: 31967819 DOI: 10.1021/acs.jctc.9b01215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Computation of molecular orbital electron repulsion integrals (MO-ERIs) as a transformation from atomic orbital ERIs (AO-ERIs) is the bottleneck of second-order electron propagator calculations when a single orbital is studied. In this contribution, asymmetric density fitting is combined with modified Cholesky decomposition to generate efficiently the required MO-ERIs. The key point of the presented algorithms is to keep track of integrals through partial contractions performed on three-center AO-ERIs; these contractions are stored in RAM instead of the AO-ERIs. Two implementations are provided, an in-core, which reduces the arithmetic and memory scaling factors as compared to the four-center AO-ERIs contraction method, and a semidirect, which overcomes memory limitations by evaluating antisymmetrized MO-ERIs in batches. On the numerical side, the proposed approach is fast and stable. The bad effects due to ill conditioning, namely, several negative and close to zero eigenvalues due to machine round off errors of the matrix associated with the density fitting process, are effectively controlled by means of a modified Cholesky factorization that avoids the matrix inversion needed to perform the asymmetrical density fitting implementation. The numerical experience presented shows that the in-core implementation is highly competitive to perform calculations on medium and large basis sets, while the semidirect implementation has small variations in time by changes in the available memory. The general applicability is illustrated on a set of selected relatively large-size molecules.
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Affiliation(s)
- Juan Felipe Huan Lew-Yee
- Departamento de Fı́sica y Quı́mica Teórica, Facultad de Quı́mica, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Roberto Flores-Moreno
- Departamento de Quı́mica, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara Jalisco 44430, Mexico
| | - José Luis Morales
- Facultad de Quı́mica, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Jorge M Del Campo
- Departamento de Fı́sica y Quı́mica Teórica, Facultad de Quı́mica, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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5
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Local density fitting applied to second order propagator equations for core electron binding energies. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Aquilante F, Delcey MG, Pedersen TB, Fdez. Galván I, Lindh R. Inner projection techniques for the low-cost handling of two-electron integrals in quantum chemistry. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1284354] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Francesco Aquilante
- Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Bologna, Italy
| | - Mickaël G. Delcey
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, CA, USA
| | - Thomas Bondo Pedersen
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Blindern, Oslo, Norway
| | - Ignacio Fdez. Galván
- Department of Chemistry – Ångström, The Theoretical Chemistry Programme, Uppsala University, Uppsala, Sweden
- Uppsala Center for Computational Chemistry – UC3, Uppsala University, Uppsala, Sweden
| | - Roland Lindh
- Department of Chemistry – Ångström, The Theoretical Chemistry Programme, Uppsala University, Uppsala, Sweden
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7
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Gromov EV, Klaiman S, Cederbaum LS. How many bound valence states does the C₆₀⁻ anion have? Phys Chem Chem Phys 2017; 18:10840-5. [PMID: 27035277 DOI: 10.1039/c6cp00667a] [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
We report on unprecedentedly large coupled cluster calculations for the C60(-) anion, and on a heuristic model uncovering the valence states of C60(-) that allow the resolution of the headlined question. Our results convincingly demonstrate that C60(-) possesses as many as four bound valence states: (2)T1u, (2)T1g, (2)T2u and (2)Hg. Our findings reconcile previous controversies regarding the existence of the bound (2)T2u and (2)Hg states. For all bound states of C60(-) we present an analysis of the radial and angular distributions of the excess electron, which reveals some unique properties of the valence states. Some interesting features of the introduced model are analyzed and discussed.
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Affiliation(s)
- Evgeniy V Gromov
- Department of Biomolecular Mechanisms, Max-Planck Institute for Medical Research Jahnstraße 29, D-69120 Heidelberg, Germany. and Laboratory of Quantum Chemistry, Computer Center, Irkutsk State University K. Marks 1, 664003 Irkutsk, Russian Federation
| | - Shachar Klaiman
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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8
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Bâldea I. Quantifying the relative molecular orbital alignment for molecular junctions with similar chemical linkage to electrodes. NANOTECHNOLOGY 2014; 25:455202. [PMID: 25327824 DOI: 10.1088/0957-4484/25/45/455202] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Estimating the relative alignment between the frontier molecular orbitals (MOs) that dominates the charge transport through single-molecule junctions represents a challenge for theory. This requires approaches beyond the widely employed framework provided by the density functional theory, wherein the Kohn-Sham 'orbitals' are treated as if they were real MOs, which is not the case. In this paper, we report results obtained by means of quantum chemical calculations, including the equation-of-motion coupled-cluster singles and doubles, which is the state-of-the-art of quantum chemistry for medium-size molecules like those considered here. These theoretical results are validated against data on the MO energy offset relative to the electrodes' Fermi energy extracted from experiments for junctions based on 4,4'-bipyridine and 1,4-dicyanobenzene.
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9
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Bâldea I. A quantum chemical study from a molecular transport perspective: ionization and electron attachment energies for species often used to fabricate single-molecule junctions. Faraday Discuss 2014; 174:37-56. [PMID: 25270244 DOI: 10.1039/c4fd00101j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The accurate determination of the lowest electron attachment (EA) and ionization (IP) energies for molecules embedded in molecular junctions is important for correctly estimating, for example, the magnitude of the currents (I) or the biases (V) where an I-V curve exhibits significant non-Ohmic behavior. Benchmark calculations for the lowest electron attachment and ionization energies of several typical molecules utilized to fabricate single-molecule junctions characterized by n-type conduction (4,4'-bipyridine, 1,4-dicyanobenzene and 4,4'-dicyano-1,1'-biphenyl) and p-type conduction (benzenedithiol, biphenyldithiol, hexanemonothiol and hexanedithiol) based on the EOM-CCSD (equation-of-motion coupled-cluster singles and doubles) state-of-the-art method of quantum chemistry are presented. They indicate significant differences from the results obtained within current approaches to molecular transport. The present study emphasizes that, in addition to a reliable quantum chemical method, basis sets much better than the ubiquitous double-zeta set employed for transport calculations are needed. The latter is a particularly critical issue for correctly determining EAs, which is impossible without including sufficient diffuse basis functions. The spatial distribution of the dominant molecular orbitals (MOs) is another important issue, on which the present study draws attention, because it sensitively affects the MO energy shifts Φ due to image charges formed in electrodes. The present results cannot substantiate the common assumption of a point-like MO midway between electrodes, which substantially affects the actual Φ-values.
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Affiliation(s)
- Ioan Bâldea
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany.
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10
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Zakrzewski VG, Dolgounitcheva O, Ortiz JV. Electron Propagator Calculations on the Ground and Excited States of C60–. J Phys Chem A 2014; 118:7424-9. [DOI: 10.1021/jp412813m] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. G. Zakrzewski
- Department
of Chemistry and
Biochemistry Auburn University Auburn Alabama 36849−5312, United States
| | - O. Dolgounitcheva
- Department
of Chemistry and
Biochemistry Auburn University Auburn Alabama 36849−5312, United States
| | - J. V. Ortiz
- Department
of Chemistry and
Biochemistry Auburn University Auburn Alabama 36849−5312, United States
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11
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Baudin P, Marín JS, Cuesta IG, Sánchez de Merás AMJ. Calculation of excitation energies from the CC2 linear response theory using Cholesky decomposition. J Chem Phys 2014; 140:104111. [DOI: 10.1063/1.4867270] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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12
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Epifanovsky E, Zuev D, Feng X, Khistyaev K, Shao Y, Krylov AI. General implementation of the resolution-of-the-identity and Cholesky representations of electron repulsion integrals within coupled-cluster and equation-of-motion methods: Theory and benchmarks. J Chem Phys 2013; 139:134105. [DOI: 10.1063/1.4820484] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Vysotskiy VP, Boström J, Veryazov V. A new module for constrained multi-fragment geometry optimization in internal coordinates implemented in the MOLCAS package. J Comput Chem 2013; 34:2657-65. [DOI: 10.1002/jcc.23428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/01/2013] [Accepted: 08/05/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Victor P. Vysotskiy
- Department of Theoretical Chemistry; Chemical Center, Lund University; P.O. Box 124 S-221 00 Lund Sweden
| | - Jonas Boström
- Department of Theoretical Chemistry; Chemical Center, Lund University; P.O. Box 124 S-221 00 Lund Sweden
| | - Valera Veryazov
- Department of Theoretical Chemistry; Chemical Center, Lund University; P.O. Box 124 S-221 00 Lund Sweden
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14
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Merlot P, Kjaergaard T, Helgaker T, Lindh R, Aquilante F, Reine S, Pedersen TB. Attractive electron-electron interactions within robust local fitting approximations. J Comput Chem 2013; 34:1486-96. [DOI: 10.1002/jcc.23284] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 03/01/2013] [Accepted: 03/05/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Patrick Merlot
- Centre for Theoretical and Computational Chemistry; Department of Chemistry; University of Oslo; P.O. Box 1033; Blindern; N-0315; Oslo; Norway
| | - Thomas Kjaergaard
- Centre for Theoretical and Computational Chemistry; Department of Chemistry; University of Oslo; P.O. Box 1033; Blindern; N-0315; Oslo; Norway
| | - Trygve Helgaker
- Centre for Theoretical and Computational Chemistry; Department of Chemistry; University of Oslo; P.O. Box 1033; Blindern; N-0315; Oslo; Norway
| | - Roland Lindh
- Department of Chemistry-Ångström; Theoretical Chemistry Programme; Uppsala University; P.O. Box 518; S-75120; Uppsala; Sweden
| | | | - Simen Reine
- Centre for Theoretical and Computational Chemistry; Department of Chemistry; University of Oslo; P.O. Box 1033; Blindern; N-0315; Oslo; Norway
| | - Thomas Bondo Pedersen
- Centre for Theoretical and Computational Chemistry; Department of Chemistry; University of Oslo; P.O. Box 1033; Blindern; N-0315; Oslo; Norway
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15
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Voora VK, Cederbaum LS, Jordan KD. Existence of a Correlation Bound s-Type Anion State of C60. J Phys Chem Lett 2013; 4:849-853. [PMID: 26291345 DOI: 10.1021/jz400195s] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is established using high-level electronic structure calculations that C60 has an s-type correlation-bound anion state with an electron binding energy of about 120 meV. Examination of the "singly occupied" natural orbital of the anion reveals that about 9% of the charge density of the excess electron is localized inside, and about 91% is localized outside the C60 cage. Calculations were also carried out for the He@C60, Ne@C60, and H2O@C60 endohedral complexes. For each of these species, the s-type anion is predicted to be less strongly bound than for C60 itself.
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Affiliation(s)
- Vamsee K Voora
- †Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Lorenz S Cederbaum
- ‡Theoretische Chemie, Institut für Physikalische Chemie, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - Kenneth D Jordan
- †Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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16
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Boström J, Aquilante F, Pedersen TB, Lindh R. Analytical Gradients of Hartree–Fock Exchange with Density Fitting Approximations. J Chem Theory Comput 2012; 9:204-12. [DOI: 10.1021/ct200836x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jonas Boström
- Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124 S-221 00 Lund, Sweden
| | - Francesco Aquilante
- Center for Biomolecular Nanotechnologies @UNILE, Italian Institute of Technology (IIT), Via Barsanti, I-73010 Arnesano (LE), Italy
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
| | - Thomas Bondo Pedersen
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway
| | - Roland Lindh
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
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17
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Ortiz JV. Electron propagator theory: an approach to prediction and interpretation in quantum chemistry. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2012. [DOI: 10.1002/wcms.1116] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Davis D, Vysotskiy VP, Sajeev Y, Cederbaum LS. A One-Step Four-Bond-Breaking Reaction Catalyzed by an Electron. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204162] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Davis D, Vysotskiy VP, Sajeev Y, Cederbaum LS. A one-step four-bond-breaking reaction catalyzed by an electron. Angew Chem Int Ed Engl 2012; 51:8003-7. [PMID: 22767526 DOI: 10.1002/anie.201204162] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Daly Davis
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
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20
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Vysotskiy VP, Cederbaum LS, Sommerfeld T, Voora VK, Jordan KD. Benchmark Calculations of the Energies for Binding Excess Electrons to Water Clusters. J Chem Theory Comput 2012; 8:893-900. [DOI: 10.1021/ct200925x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Victor P. Vysotskiy
- Theoretische
Chemie, Institut
für Physikalische Chemie, Universität Heidelberg, D-69120
Heidelberg, Germany
| | - Lorenz S. Cederbaum
- Theoretische
Chemie, Institut
für Physikalische Chemie, Universität Heidelberg, D-69120
Heidelberg, Germany
| | - Thomas Sommerfeld
- Department
of Chemistry and
Physics, Southeastern Louisiana University, Hammond, Louisiana 70402,
United States
| | - Vamsee K. Voora
- Department
of Chemistry and Center
for Molecular and Materials Simulations, University of Pittsburgh,
Pittsburgh, Pennsylvania 15260, United States
| | - Kenneth D. Jordan
- Department
of Chemistry and Center
for Molecular and Materials Simulations, University of Pittsburgh,
Pittsburgh, Pennsylvania 15260, United States
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21
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Bezchastnov VG, Vysotskiy VP, Cederbaum LS. Anions of xenon clusters bound by long-range electron correlations. PHYSICAL REVIEW LETTERS 2011; 107:133401. [PMID: 22026850 DOI: 10.1103/physrevlett.107.133401] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Indexed: 05/31/2023]
Abstract
In contrast with the single atom, atomic van der Waals clusters can form stable anions where the excess electron is bound due to long-range correlations with the electrons of the cluster. We report on extensive all-electron many-body ab initio studies on Xe clusters. Three-dimensional, planar, and linear structures of the clusters are investigated and compared. In particular, we find that the minimal number of Xe atoms in the cluster required to form a stable anion is 5 independently of the dimensionality of the cluster. We provide electron affinities for clusters made of 5, 6, and 7 atoms in all dimensions and find that the planar clusters form the most stable anions. The Dyson orbitals of the excess electrons are computed and analyzed.
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Affiliation(s)
- Victor G Bezchastnov
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, INF, Heidelberg, Germany
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22
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Davis D, Vysotskiy VP, Sajeev Y, Cederbaum LS. Electron Impact Catalytic Dissociation: Two-Bond Breaking by a Low-Energy Catalytic Electron. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005129] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Davis D, Vysotskiy VP, Sajeev Y, Cederbaum LS. Electron impact catalytic dissociation: two-bond breaking by a low-energy catalytic electron. Angew Chem Int Ed Engl 2011; 50:4119-22. [PMID: 21472906 DOI: 10.1002/anie.201005129] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 01/25/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Daly Davis
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
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24
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Cholesky Decomposition Techniques in Electronic Structure Theory. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2011. [DOI: 10.1007/978-90-481-2853-2_13] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Vysotskiy VP, Cederbaum LS. Accurate Quantum Chemistry in Single Precision Arithmetic: Correlation Energy. J Chem Theory Comput 2010; 7:320-6. [DOI: 10.1021/ct100533u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victor P. Vysotskiy
- Theoretical Chemistry, Institute of Physical Chemistry at Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Lorenz S. Cederbaum
- Theoretical Chemistry, Institute of Physical Chemistry at Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
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26
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Sommerfeld T, Bhattarai B, Vysotskiy VP, Cederbaum LS. Correlation-bound anions of NaCl clusters. J Chem Phys 2010; 133:114301. [DOI: 10.1063/1.3488228] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Okiyama Y, Nakano T, Yamashita K, Mochizuki Y, Taguchi N, Tanaka S. Acceleration of fragment molecular orbital calculations with Cholesky decomposition approach. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.03.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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