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Yang Z, Wan Z, Liu L, Fu J, Fan Q, Xie F, Zhang Y, Ma J. Achieving vibrational energies of diatomic systems with high quality by machine learning improved DFT method. RSC Adv 2022; 12:35950-35958. [PMID: 36545113 PMCID: PMC9753899 DOI: 10.1039/d2ra07613f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
When using ab initio methods to obtain high-quality quantum behavior of molecules, it often involves a lot of trial-and-error work in algorithm design and parameter selection, which requires enormous time and computational resource costs. In the study of vibrational energies of diatomic molecules, we found that starting from a low-precision DFT model and then correcting the errors using the high-dimensional function modeling capabilities of machine learning, one can considerably reduce the computational burden and improve the prediction accuracy. Data-driven machine learning is able to capture subtle physical information that is missing from DFT approaches. The results of 12C16O, 24MgO and Na35Cl show that, compared with CCSD(T)/cc-pV5Z calculation, this work improves the prediction accuracy by more than one order of magnitude, and reduces the computation cost by more than one order of magnitude.
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Affiliation(s)
- Zhangzhang Yang
- School of science, Key Laboratory of High Performance Scientific Computation, Xihua UniversityChengdu610039China
| | - Zhitao Wan
- School of science, Key Laboratory of High Performance Scientific Computation, Xihua UniversityChengdu610039China
| | - Li Liu
- School of science, Key Laboratory of High Performance Scientific Computation, Xihua UniversityChengdu610039China
| | - Jia Fu
- School of science, Key Laboratory of High Performance Scientific Computation, Xihua UniversityChengdu610039China
| | - Qunchao Fan
- School of science, Key Laboratory of High Performance Scientific Computation, Xihua UniversityChengdu610039China
| | - Feng Xie
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua UniversityBeijing100084China
| | - Yi Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense TechnologyChangsha410073China
| | - Jie Ma
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, College of Physics and Electronics Engineering, Shanxi UniversityTaiyuan030006China
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Cederbaum LS. Ultrafast Intermolecular Energy Transfer from Vibrations to Electronic Motion. PHYSICAL REVIEW LETTERS 2018; 121:223001. [PMID: 30547622 DOI: 10.1103/physrevlett.121.223001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 06/09/2023]
Abstract
It is discussed how vibrationally excited molecules in their electronic ground state can transfer their vibrational energy to the electronic motion of neighbors and ionize them. Based on explicit examples of vibrationally excited molecules and anionic neighbors, it is demonstrated that the transfer can be extremely efficient at intermolecular distances much beyond distances at which the molecule and its neighbor can form a bond.
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Affiliation(s)
- Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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Cabezas C, Cernicharo J, Quintana-Lacaci G, Peña I, Agundez M, Prieto LV, Castro-Carrizo A, Zuñiga J, Bastida A, Alonso JL, Requena A. High-Resolution Rotational Spectrum, Dunham Coefficients, and Potential Energy Function of NaCl. THE ASTROPHYSICAL JOURNAL 2016; 825:150. [PMID: 27733778 PMCID: PMC5056638 DOI: 10.3847/0004-637x/825/2/150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report laboratory spectroscopy for the first time of the J = 1-0 and J = 2-1 lines of Na35Cl and Na37Cl in several vibrational states. The hyperfine structure has been resolved in both transitions for all vibrational levels, which permit us to predict with high accuracy the hyperfine splitting of the rotational transitions of the two isotopologues at higher frequencies. The new data have been merged with all previous works at microwave, millimeter, and infrared wavelengths and fitted to a series of mass-independent Dunham parameters and to a potential energy function. The obtained parameters have been used to compute a new dipole moment function, from which the dipole moment for infrared transitions up to Δv = 8 has been derived. Frequency and intensity predictions are provided for all rovibrational transitions up to J = 150 and v = 8, from which the ALMA data of evolved stars can be modeled and interpreted.
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Affiliation(s)
- C Cabezas
- Grupo de Espectroscopía Molecular, Edificio Quifima, Laboratorios de Espectroscopía y Bioespectroscopía, Unidad asociada CSIC, Parque científico Uva, Universidad de Valladolid, Paseo de Belén 5, E-47011, Valladolid, Spain
| | - J Cernicharo
- Group of Molecular Astrophysics, ICMM, CSIC. C/Sor Juana Inés de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - G Quintana-Lacaci
- Group of Molecular Astrophysics, ICMM, CSIC. C/Sor Juana Inés de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - I Peña
- Grupo de Espectroscopía Molecular, Edificio Quifima, Laboratorios de Espectroscopía y Bioespectroscopía, Unidad asociada CSIC, Parque científico Uva, Universidad de Valladolid, Paseo de Belén 5, E-47011, Valladolid, Spain
| | - M Agundez
- Group of Molecular Astrophysics, ICMM, CSIC. C/Sor Juana Inés de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - L Velilla Prieto
- Group of Molecular Astrophysics, ICMM, CSIC. C/Sor Juana Inés de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - A Castro-Carrizo
- Institut de Radioastronomie Millimétrique, 300 rue de la la Piscine, F-38406, Saint Martin d'Hères, France
| | - J Zuñiga
- Universidad de Murcia. Faculdad de Química, Dpto. de Química-Física, Campus Espinardo E-30100, Murcia, Spain
| | - A Bastida
- Universidad de Murcia. Faculdad de Química, Dpto. de Química-Física, Campus Espinardo E-30100, Murcia, Spain
| | - J L Alonso
- Grupo de Espectroscopía Molecular, Edificio Quifima, Laboratorios de Espectroscopía y Bioespectroscopía, Unidad asociada CSIC, Parque científico Uva, Universidad de Valladolid, Paseo de Belén 5, E-47011, Valladolid, Spain
| | - A Requena
- Universidad de Murcia. Faculdad de Química, Dpto. de Química-Física, Campus Espinardo E-30100, Murcia, Spain
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Prieto LV, Cernicharo J, Quintana-Lacaci G, Agúndez M, Castro-Carrizo A, Fonfŕia JP, Marcelino N, Zúñiga J, Requena A, Bastida A, Lique F, Guélin M. SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO. THE ASTROPHYSICAL JOURNAL. LETTERS 2015; 805:L13. [PMID: 26688711 PMCID: PMC4681092 DOI: 10.1088/2041-8205/805/2/l13] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We report the detection of SiS rotational lines in high-vibrational states as well as SiO and SiC2 lines in their ground vibrational state toward IRC+10216 during the Atacama Large Millimeter Array Cycle 0. The spatial distribution of these molecules shows compact emission for SiS and a more extended emission for SiO and SiC2, and also proves the existence of an increase in the SiC2 emission at the outer shells of the circumstellar envelope. We analyze the excitation conditions of the vibrationally excited SiS using the population diagram technique, and we use a large velocity gradient model to compare with the observations. We found moderate discrepancies between the observations and the models that could be explained if SiS lines detected are optically thick. Additionally, the line profiles of the detected rotational lines in the high energy vibrational states show a decreasing linewidth with increasing energy levels. This may be evidence that these lines could be excited only in the inner shells, i.e., the densest and hottest, of the circumstellar envelope of IRC+10216.
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Affiliation(s)
- L Velilla Prieto
- Group of Molecular Astrophysics. ICMM, CSIC. C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain ; Centro de Astrobiología, INTA-CSIC. E-28691 Villanueva de la Cañada, Madrid, Spain
| | - J Cernicharo
- Group of Molecular Astrophysics. ICMM, CSIC. C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain
| | - G Quintana-Lacaci
- Group of Molecular Astrophysics. ICMM, CSIC. C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain
| | - M Agúndez
- Group of Molecular Astrophysics. ICMM, CSIC. C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain
| | - A Castro-Carrizo
- Institut de Radioastronomie Millimétrique. 300 rue de la la Piscine, F-38406, Saint Martin d'Hères, France
| | - J P Fonfŕia
- Departamento de Estrellas y Medio Interestelar, Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM). Ciudad Universitaria, 04510, Mexico City, México
| | - N Marcelino
- Istituto di Radiastronomia, INAF-CNR, via Gobetti 101, 40129 Bologna, Italy
| | - J Zúñiga
- Departamento de Química Física, Facultad de Química, Universidad de Murcia. Campus Espinardo, 30100 Murcia, Spain
| | - A Requena
- Departamento de Química Física, Facultad de Química, Universidad de Murcia. Campus Espinardo, 30100 Murcia, Spain
| | - A Bastida
- Departamento de Química Física, Facultad de Química, Universidad de Murcia. Campus Espinardo, 30100 Murcia, Spain
| | - F Lique
- LOMC-UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP. 1123, 76063 Le Havre cedex, France
| | - M Guélin
- Institut de Radioastronomie Millimétrique. 300 rue de la la Piscine, F-38406, Saint Martin d'Hères, France ; LERMA, Observatoire de Paris, PSL Research University, CNRS, UMR 8112, F-75014, Paris, France
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Abstract
The potential energy curves for the lowest (3)Sigma(-), (3)Pi, and (5)Sigma(-) states of the KN molecule have been calculated by the multireference singles and doubles configuration interaction method, including Davidson's corrections for quadruple excitations [MRCI(+Q)]. It is shown that the former two are bound, while the last one is repulsive. The electronic ground state of KN is predicted as (3)Sigma(-) state, although the term energy of the (3)Pi state is very small, 177.3 cm(-1). The binding energy for the (3)Sigma(-) state is evaluated as 0.838 eV, the rotational constant B(0) as 0.250 63 cm(-1), and harmonic frequency as 324.4 cm(-1). The spin-orbit coupling effects between the (3)Sigma(-) and (3)Pi states of KN are evaluated and discussed. The same MRCI(+Q) computational procedures are applied to the isovalent LiN, KC, KO, and KCl to confirm the accuracy of present calculations. Theoretical spectroscopic constants presented here will inspire experimental studies of KN.
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Affiliation(s)
- Keisaku Ishii
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
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Ruette F, Sánchez M, Añez R, Bermúdez A, Sierraalta A. Diatomic molecule data for parametric methods. I. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2005.04.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ogilvie JF, Aa Jensen HJ, Sauer SPA. Analysis of Pure Rotational and Vibration-rotational Spectra of NaCl X 1Σ +and Quantum-chemical Calculation of Related Molecular Properties. J CHIN CHEM SOC-TAIP 2005. [DOI: 10.1002/jccs.200500090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Caris M, Lewen F, Müller H, Winnewisser G. Pure rotational spectroscopy of potassium chloride, KCl, up to 930GHz and isotopically invariant analysis of KCl and NaCl. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.11.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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IRON MARKA, OREN MIKHAL, MARTIN JANML. Alkali and alkaline earth metal compounds: core—valence basis sets and importance of subvalence correlation. Mol Phys 2003. [DOI: 10.1080/0026897031000094498] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Coxon JA, Molski M. A numerical test of analytical methods for reduction of IR and MW spectra of NaCl chi1sigma+ to parameters of radial functions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2003; 59:13-17. [PMID: 12509142 DOI: 10.1016/s1386-1425(02)00114-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two methods for direct inversion of IR and MW spectra of diatomic molecules--a deformational self-consistent procedure (DS-cP) and a computer program RADIATOM based on hypervirial perturbation theory are tested numerically. The test calculations for NaCl chi1sigma+ confirm that the RADIATOM program does not produce sufficiently accurate radial parameters and energy term values for their export to other utilities employed in the spectral analysis of diatomic systems.
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Affiliation(s)
- John A Coxon
- Department of Chemistry, Dalhousie University, Halifax, NS, Canada B3H 4J3
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Ogilvie JF, Uehara H, Horiai K. Analysis of the Infrared Spectrum of RbCl Vapor. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2000. [DOI: 10.1246/bcsj.73.321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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