1
|
Pashov A, Kowalczyk P, Szczepkowski J, Jastrzebski W. The C(2) 1Π u state in Rb 2. Observation and deperturbation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121624. [PMID: 35858532 DOI: 10.1016/j.saa.2022.121624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/27/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
We report a systematic study of the C(2)1Πuelectronic state in rubidium dimer, observed in polarization labelling spectroscopy experiment through the C ← X1Σg+ transitions recorded under rotational resolution in two isotopologues 85Rb2 and 85Rb87Rb. Regularity of the vibrational progressions was distorted by numerous interactions with the surrounding 21Σu+, 23Πuand 33Σu+states. Deperturbation was performed by coupled-channels analysis taking into account spin-orbit and rotational interactions. Potential energy curves and parameters describing the off-diagonal matrix elements were determined as functions of internuclear distance. About 3000 line frequencies from the present study are reproduced with a standard deviation of 0.07 cm-1, in agreement with the experimental accuracy. Along with this, the model is consistent with all high resolution experimental data on the involved electronic states, available in the literature.
Collapse
Affiliation(s)
- Asen Pashov
- Faculty of Physics, Sofia University, 5 James Bourchier Boulevard, 1164 Sofia, Bulgaria.
| | - Pawel Kowalczyk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warszawa, Poland.
| | - Jacek Szczepkowski
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Wlodzimierz Jastrzebski
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland.
| |
Collapse
|
2
|
Pingak RK, Johannes AZ, Ngara ZS, Bukit M, Nitti F, Tambaru D, Ndii MZ. Accuracy of Morse and Morse-like oscillators for diatomic molecular interaction: A comparative study. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
3
|
Yang D, Zuo J, Huang J, Hu X, Dawes R, Xie D, Guo H. A Global Full-Dimensional Potential Energy Surface for the K 2Rb 2 Complex and Its Lifetime. J Phys Chem Lett 2020; 11:2605-2610. [PMID: 32163714 DOI: 10.1021/acs.jpclett.0c00518] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A full-dimensional global potential energy surface for the KRb + KRb → K2 + Rb2 reaction is developed from 20 759 ab initio points calculated using a coupled cluster singles, doubles, and perturbative triples (CCSD(T)) method with effective core potentials, extrapolated to the complete basis set limit. The ab initio points are represented with high fidelity (root-mean-square error of 1.86 cm-1) using the permutation-invariant polynomial-neural network method, which enforces the permutation invariance of the potential with respect to exchange of identical nuclei. The potential energy surface features two D2h minima and one Cs minimum connected by the isomerization saddle points. The Rice-Ramsperger-Kassel-Marcus lifetime of the K2Rb2 reaction intermediate estimated using the potential energy surface is 227 ns, in reasonable agreement with the latest experimental measurement.
Collapse
Affiliation(s)
- Dongzheng Yang
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Junxiang Zuo
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Jing Huang
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Xixi Hu
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Richard Dawes
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Daiqian Xie
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| |
Collapse
|
4
|
Arndt PT, Sovkov VB, Ma J, Pan X, Beecher DS, Tsai JY, Guan Y, Lyyra AM, Ahmed EH. The Rb 2 3 1Π g state: Observation and analysis. J Chem Phys 2018; 149:224303. [PMID: 30553240 DOI: 10.1063/1.5058282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This paper reports observations and analysis of the Rb2 31Π g state. A total of 323 rovibrational term values spanning the range of the rotational quantum number J = 7 through 77 and the vibrational quantum number v = 2 through 23 (about 1/3 of the potential well depth) were measured using the optical-optical double resonance technique. The term values are simulated within a model of a piece-wise multi-parameter potential energy function based on the generalized splines. This function not only enables a reproduction of the experimental data with a reasonable quality but also approximates the available ab initio function in its whole range with a uniform accuracy.
Collapse
Affiliation(s)
- Phillip T Arndt
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - Vladimir B Sovkov
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Jie Ma
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, College of Physics and Electronics, Shanxi University, Taiyuan 030006, China
| | - Xinhua Pan
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - David S Beecher
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - Jeng Y Tsai
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - Yafei Guan
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - A Marjatta Lyyra
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| | - Ergin H Ahmed
- Physics Department, Temple University, Philadelphia, Pennsylvania 19122-6082, USA
| |
Collapse
|
5
|
Hill JG, Peterson KA. Gaussian basis sets for use in correlated molecular calculations. XI. Pseudopotential-based and all-electron relativistic basis sets for alkali metal (K-Fr) and alkaline earth (Ca-Ra) elements. J Chem Phys 2018; 147:244106. [PMID: 29289120 DOI: 10.1063/1.5010587] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
New correlation consistent basis sets based on pseudopotential (PP) Hamiltonians have been developed from double- to quintuple-zeta quality for the late alkali (K-Fr) and alkaline earth (Ca-Ra) metals. These are accompanied by new all-electron basis sets of double- to quadruple-zeta quality that have been contracted for use with both Douglas-Kroll-Hess (DKH) and eXact 2-Component (X2C) scalar relativistic Hamiltonians. Sets for valence correlation (ms), cc-pVnZ-PP and cc-pVnZ-(DK,DK3/X2C), in addition to outer-core correlation [valence + (m-1)sp], cc-p(w)CVnZ-PP and cc-pwCVnZ-(DK,DK3/X2C), are reported. The -PP sets have been developed for use with small-core PPs [I. S. Lim et al., J. Chem. Phys. 122, 104103 (2005) and I. S. Lim et al., J. Chem. Phys. 124, 034107 (2006)], while the all-electron sets utilized second-order DKH Hamiltonians for 4s and 5s elements and third-order DKH for 6s and 7s. The accuracy of the basis sets is assessed through benchmark calculations at the coupled-cluster level of theory for both atomic and molecular properties. Not surprisingly, it is found that outer-core correlation is vital for accurate calculation of the thermodynamic and spectroscopic properties of diatomic molecules containing these elements.
Collapse
Affiliation(s)
- J Grant Hill
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| | - Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164, USA
| |
Collapse
|
6
|
Affiliation(s)
- Robert A. Shaw
- Department of Chemistry, University of Sheffield, Sheffield, UK
| | - J. Grant Hill
- Department of Chemistry, University of Sheffield, Sheffield, UK
| |
Collapse
|
7
|
Zhao YR, Zhang HR, Qian Y, Duan XC, Hu YF. Probing the structural and electronic properties of cationic rubidium–gold clusters: [AunRb]+ (n = 1–10). Mol Phys 2015. [DOI: 10.1080/00268976.2015.1118571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ya-Ru Zhao
- Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Hai-Rong Zhang
- School of Electrical and Electronic Engineering, Baoji University of Arts and Sciences, Baoji, China
| | - Yu Qian
- Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Xu-Chao Duan
- Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Yan-Fei Hu
- Institute of Science, Sichuan University of Science and Engineering, Zigong, China
| |
Collapse
|
8
|
Zhao YR, Qian Y, Zhang MG, Hu YF. Evolution of structures, stabilities, and electronic properties of anionic [AunRb]−(n= 1–10) clusters: comparison with pure gold clusters. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1044480] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Nozaki H, Ikeda Y, Ichikawa K, Tachibana A. Electronic stress tensor analysis of molecules in gas phase of CVD process for GeSbTe alloy. J Comput Chem 2015; 36:1240-51. [PMID: 25906966 DOI: 10.1002/jcc.23920] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/25/2015] [Accepted: 04/01/2015] [Indexed: 01/05/2023]
Abstract
We analyze the electronic structure of molecules which may exist in gas phase of chemical vapor deposition process for GeSbTe alloy using the electronic stress tensor, with special focus on the chemical bonds between Ge, Sb, and Te atoms. We find that, from the viewpoint of the electronic stress tensor, they have intermediate properties between alkali metals and hydrocarbon molecules. We also study the correlation between the bond order which is defined based on the electronic stress tensor, and energy-related quantities. We find that the correlation with the bond dissociation energy is not so strong while one with the force constant is very strong. We interpret these results in terms of the energy density on the "Lagrange surface," which is considered to define the boundary surface of atoms in a molecule in the framework of the electronic stress tensor analysis.
Collapse
Affiliation(s)
- Hiroo Nozaki
- Department of Micro Engineering, Kyoto University, Kyoto, 615-8540, Japan
| | - Yuji Ikeda
- Department of Micro Engineering, Kyoto University, Kyoto, 615-8540, Japan
| | - Kazuhide Ichikawa
- Department of Micro Engineering, Kyoto University, Kyoto, 615-8540, Japan
| | - Akitomo Tachibana
- Department of Micro Engineering, Kyoto University, Kyoto, 615-8540, Japan
| |
Collapse
|
10
|
Shao P, Ding LP, Feng HT, Cai JT. Density function study transition metal chromium-doped alkali clusters: the finding of magnetic superatom. Mol Phys 2015. [DOI: 10.1080/00268976.2014.993733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
11
|
Zou W, Nori-Shargh D, Boggs JE. On the Covalent Character of Rare Gas Bonding Interactions: A New Kind of Weak Interaction. J Phys Chem A 2012; 117:207-12. [DOI: 10.1021/jp3104535] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenli Zou
- Institute for Theoretical Chemistry, Chemistry and Biochemistry
Department, The University of Texas at Austin, Austin, Texas 78712-0165,
United States
| | - Davood Nori-Shargh
- Institute for Theoretical Chemistry, Chemistry and Biochemistry
Department, The University of Texas at Austin, Austin, Texas 78712-0165,
United States
- Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
| | - James E. Boggs
- Institute for Theoretical Chemistry, Chemistry and Biochemistry
Department, The University of Texas at Austin, Austin, Texas 78712-0165,
United States
| |
Collapse
|
12
|
Allouche AR, Aubert-Frécon M. Transition dipole moments between the low-lying Ωg,u(+/−)states of the Rb2and Cs2molecules. J Chem Phys 2012; 136:114302. [DOI: 10.1063/1.3694014] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
13
|
Hu YF, Jiang G, Meng DQ. Density-functional theory study of the geometries, stabilities, and electronic properties of AunRb (n = 1–10) clusters: comparison with pure gold clusters. Mol Phys 2012. [DOI: 10.1080/00268976.2011.635160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
14
|
Smirnov AD. Calculating the molecular constants for the B 1Π u , C 1Π u , (1)1Π g , and (2) Σ g + electronic states of the rubidium dimer. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2011. [DOI: 10.1134/s0036024411060306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Guillon G, Zanchet A, Leino M, Viel A, Zillich RE. Theoretical Study of Rb2 in HeN: Potential Energy Surface and Monte Carlo Simulations. J Phys Chem A 2011; 115:6918-26. [DOI: 10.1021/jp112053b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Grégroire Guillon
- Institut de Physique de Rennes, UMR 6251, CNRS & Université de Rennes I, F-35042 Rennes, France
| | | | | | | | | |
Collapse
|
16
|
Villaume S, Saue T, Norman P. Linear complex polarization propagator in a four-component Kohn–Sham framework. J Chem Phys 2010; 133:064105. [DOI: 10.1063/1.3461163] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
|
17
|
|
18
|
|
19
|
|
20
|
Varandas A, Rodrigues S, Batista V. Direct fit of extended Hartree–Fock approximate correlation energy model to spectroscopic data. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.04.084] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Sun * W, Ren W, Hou S, Feng H. Studies on full vibrational spectra and dissociation energies of some diatomic molecular electronic states using algebraic approaches. Mol Phys 2005. [DOI: 10.1080/01449290500102185] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
22
|
Donald KJ, Mulder WH, von Szentpály L. Valence-State Atoms in Molecules. 7. Influence of Polarization and Bond-Charge on Spectroscopic Constants of Diatomic Molecules. J Phys Chem A 2003. [DOI: 10.1021/jp035902b] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kelling J. Donald
- Department of Chemistry, University of the West Indies, Kingston 7, Jamaica, and Institut für Theoretische Chemie der Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Willem H. Mulder
- Department of Chemistry, University of the West Indies, Kingston 7, Jamaica, and Institut für Theoretische Chemie der Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - László von Szentpály
- Department of Chemistry, University of the West Indies, Kingston 7, Jamaica, and Institut für Theoretische Chemie der Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| |
Collapse
|
23
|
von Szentpály L, Gardner DON. Valence-State Atoms in Molecules. 6. Universal Ionic−Covalent Potential Energy Curves. J Phys Chem A 2001. [DOI: 10.1021/jp012604a] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- László von Szentpály
- Department of Chemistry, University of the West Indies, Mona Campus, Kingston 7, Jamaica
| | - Devon O. Niel Gardner
- Department of Chemistry, University of the West Indies, Mona Campus, Kingston 7, Jamaica
| |
Collapse
|
24
|
Park SJ, Suh SW, Lee YS, Jeung GH. Theoretical Study of the Electronic States of the Rb(2) Molecule. JOURNAL OF MOLECULAR SPECTROSCOPY 2001; 207:129-135. [PMID: 11397100 DOI: 10.1006/jmsp.2001.8337] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We have calculated the electronic states of Rb(2) by multireference configuration interactions using the averaged relativistic effective small-core potential and the core-polarization potential. The potential energy curves for a large number of states dissociating into from 5s+5s up to 7s+5s asymptotic limits are calculated and the spectroscopic constants are reported. The spin-orbit effects for the states dissociating into 5p+5s and 4d+5s are calculated using the effective spin-orbit potential. The results are compared with available experimental data and other theoretical works. Copyright 2001 Academic Press.
Collapse
Affiliation(s)
- Su Jin Park
- Department of Chemistry and School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology, Taejon, 305-701, South Korea
| | | | | | | |
Collapse
|
25
|
Van Hooydonk G. Gauge symmetry, chirality and parity effects in four-particle systems: Coulomb's law as a universal function for diatomic molecules. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56A:2273-2331. [PMID: 11075672 DOI: 10.1016/s1386-1425(00)00298-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Following recent work in search for a universal function (Van Hooydonk, Eur. J. Inorg. Chem., (1999), 1617), we test four symmetric +/- a(n)Rn potentials for reproducing molecular potential energy curves (PECs). Classical gauge symmetry for 1/R-potentials results in generic left right asymmetric PECs. A pair of symmetric perturbed Coulomb potentials is quantitatively in accordance with observed PECs. For a bond, a four-particle system, charge inversion (a parity effect, atom chirality) is the key to explain this shape generically. A parity adapted Hamiltonian reduces from ten to two terms and to a soluble Bohr-like formula, a Kratzer (1 - Re/R)2 potential. The result is similar to the combined action of spin and wave function symmetry upon the Hamiltonian in Heitler-London theory. Analytical perturbed Coulomb functions varying with (1 - Re/R) scale attractive and repulsive branches of PECs for 13 bonds H2, HF, LiH, KH, AuH, Li2, LiF, KLi, NaCs, Rb2, RbCs, Cs2 and I2 in a single straight line. The 400 turning points for 13 bonds are reproduced with a deviation of 0.007 A at both branches. For 230 points at the repulsive side, the deviation is 0.003 A. The perturbed electrostatic Coulomb law is a universal molecular function. Ab initio zero molecular parameter functions give PECs of acceptable quality, just using atomic ionisation energies. The function can be used as a model potential for inverting levels and gives a first principle's comparison of short- and long-range interactions, important for the study of cold atoms. Wave-packet dynamics, femto-chemistry applied to the crossing of covalent and ionic curves, can provide evidence for this theory. We anticipate this scale/shape invariant scheme applies to smaller scales in nuclear and high-energy particle physics. For larger gravitational scales (Newton 1/R potentials), problems with super-unification are discussed. Reactions between hydrogen and antihydrogen, feasible in the near future, will probably produce normal H2.
Collapse
Affiliation(s)
- G Van Hooydonk
- Department of Library Sciences, Ghent University, Belgium.
| |
Collapse
|
26
|
Kornath A, Zoermer A, Ludwig R. Raman Spectroscopic Investigation of Matrix Isolated Rubidium and Cesium Molecules: Rb(2), Rb(3), Cs(2), and Cs(3)(,)(1). Inorg Chem 1999; 38:4696-4699. [PMID: 11671193 DOI: 10.1021/ic990506m] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rubidium molecules Rb(2) and Rb(3) and the cesium molecules Cs(2) and Cs(3) were isolated in argon matrixes and characterized for the first time by Raman spectroscopy. The fundamental frequencies of the dimers were observed at 59.1 cm(-)(1) for the rubidium dimer and 45.8 cm(-)(1) for the cesium dimer. The Raman lines of the rubidium trimer appeared at 38.3 and 53.9 cm(-)(1), and the lines of the cesium trimer, at 24.4 and 39.5 cm(-)(1). The vibrational frequencies were compared with gas-phase frequencies and with density functional theory (DFT) calculations. Furthermore, the lowest vibrational levels of the (1)Pi(u) state of Cs(2) isolated in solid argon were observed by Raman matrix spectroscopy.
Collapse
Affiliation(s)
- Andreas Kornath
- Physikalische Chemie, Fachbereich Chemie der Universität Dortmund, 44221 Dortmund, Germany
| | | | | |
Collapse
|
27
|
Goedecker S, Teter M, Hutter J. Separable dual-space Gaussian pseudopotentials. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:1703-1710. [PMID: 9986014 DOI: 10.1103/physrevb.58.3641] [Citation(s) in RCA: 1594] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
|
28
|
Foucrault M, Millie P, Daudey JP. Nonperturbative method for core–valence correlation in pseudopotential calculations: Application to the Rb2 and Cs2 molecules. J Chem Phys 1992. [DOI: 10.1063/1.462162] [Citation(s) in RCA: 256] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
29
|
Jhung KS, Kim IH, Oh KH, Hahn KB, Jhung KH. Universal nature of diatomic potentials. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:6497-6506. [PMID: 9903948 DOI: 10.1103/physreva.42.6497] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
30
|
Krauss M, Stevens WJ. Effective core potentials and accurate energy curves for Cs2 and other alkali diatomics. J Chem Phys 1990. [DOI: 10.1063/1.458756] [Citation(s) in RCA: 140] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
31
|
Wei H. Four-parameter exactly solvable potential for diatomic molecules. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:2524-2529. [PMID: 9904318 DOI: 10.1103/physreva.42.2524] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
32
|
Jen F, Brandt BA. Application of the reduced-potential curve method for the detection of errors or inaccuracies in the analysis of spectra and for the construction of internuclear potentials of diatomic molecules: Alkali diatomic molecules. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:4561-4582. [PMID: 9901807 DOI: 10.1103/physreva.39.4561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
33
|
Gustavsson T, Amiot C, Vergès J. LIF spectroscopy of RbCs using an Ar+ laser. Rotational analysis of the 1Σ+ ground state for ν″ up to 66. Chem Phys Lett 1988. [DOI: 10.1016/0009-2614(88)87019-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
34
|
|
35
|
Jen J, Brandt BA. Ground-state reduced-potential curves and estimation of the dissociation energy of alkali-metal diatomic molecules. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 35:3784-3792. [PMID: 9898604 DOI: 10.1103/physreva.35.3784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
36
|
Amiot C, Verges J. The Rb221Σ+gelectronic state by laser induced fluorescence infrared Fourier transform spectroscopy. Mol Phys 1987. [DOI: 10.1080/00268978700100981] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
37
|
Amiot C. The Rb211Πgelectronic state by laser-induced fluorescence infrared Fourier transform spectroscopy. Mol Phys 1986. [DOI: 10.1080/00268978600101491] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|