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Chai S, Yu Y, Yang D, Zhou Y, Xie D. Full quantum calculations of the line shape for H2O perturbed by Ar at temperatures from 20 to 300 K. J Chem Phys 2024; 161:044305. [PMID: 39037138 DOI: 10.1063/5.0216305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Accepted: 07/08/2024] [Indexed: 07/23/2024] Open
Abstract
This work theoretically studied the spectral line shape of H2O perturbed by Ar in the temperature range of 20-300 K for the pure rotational lines below 360 cm-1, as well as three lines (31, 2 ← 44, 1, 54, 2 ← 41, 3, and 73, 5 ← 60, 6) in the v2 band. In order to perform precise dynamical calculations at low collision energies, a full-dimensional long-range potential energy surface was constructed for the H2O-Ar system for the first time to correct the long range of our newly developed intermolecular potential energy surface. Subsequently, the six line-shape parameters (pressure-broadening and -shifting parameters, their speed dependencies, and the complex Dicke parameters) were determined from the generalized spectroscopic cross section by the full quantum time-independent close-coupling approach on this new potential energy surface. Our theoretical results are in good agreement with the available experimental observations. Furthermore, the influence of the speed-dependence and Dicke narrowing effects on the line contour was revealed by comparing the differences among the Hartmann-Tran, quadratic-speed-dependent Voigt, and Voigt profiles. The temperature dependence of each line-shape parameter was further parameterized using the triplet-power-law for three pure rotational 61, 6 ← 52, 3, 41, 4 ← 32, 1, and 31, 3 ← 22, 0 lines. These line-shape parameters will provide a comprehensive set of theoretical references for subsequent experimental measurements.
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Affiliation(s)
- Shijie Chai
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yipeng Yu
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Dongzheng Yang
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - Yanzi Zhou
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Daiqian Xie
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Hefei National Laboratory, Hefei 230088, China
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Rock CA, Tschumper GS. Insight into the Binding of Argon to Cyclic Water Clusters from Symmetry-Adapted Perturbation Theory. Int J Mol Sci 2023; 24:17480. [PMID: 38139311 PMCID: PMC10744083 DOI: 10.3390/ijms242417480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
This work systematically examines the interactions between a single argon atom and the edges and faces of cyclic H2O clusters containing three-five water molecules (Ar(H2O)n=3-5). Full geometry optimizations and subsequent harmonic vibrational frequency computations were performed using MP2 with a triple-ζ correlation consistent basis set augmented with diffuse functions on the heavy atoms (cc-pVTZ for H and aug-cc-pVTZ for O and Ar; denoted as haTZ). Optimized structures and harmonic vibrational frequencies were also obtained with the two-body-many-body (2b:Mb) and three-body-many-body (3b:Mb) techniques; here, high-level CCSD(T) computations capture up through the two-body or three-body contributions from the many-body expansion, respectively, while less demanding MP2 computations recover all higher-order contributions. Five unique stationary points have been identified in which Ar binds to the cyclic water trimer, along with four for (H2O)4 and three for (H2O)5. To the best of our knowledge, eleven of these twelve structures have been characterized here for the first time. Ar consistently binds more strongly to the faces than the edges of the cyclic (H2O)n clusters, by as much as a factor of two. The 3b:Mb electronic energies computed with the haTZ basis set indicate that Ar binds to the faces of the water clusters by at least 3 kJ mol-1 and by nearly 6 kJ mol-1 for one Ar(H2O)5 complex. An analysis of the interaction energies for the different binding motifs based on symmetry-adapted perturbation theory (SAPT) indicates that dispersion interactions are primarily responsible for the observed trends. The binding of a single Ar atom to a face of these cyclic water clusters can induce perturbations to the harmonic vibrational frequencies on the order of 5 cm-1 for some hydrogen-bonded OH stretching frequencies.
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Affiliation(s)
| | - Gregory S. Tschumper
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677-1848, USA
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Glorieux R, Hays BM, Bogomolov AS, Herman M, Vanfleteren T, Moazzen-Ahmadi N, Lauzin C. Understanding the high-resolution spectral signature of the N2-H2O van der Waals complex in the 2OH stretch region. J Chem Phys 2023; 158:2895232. [PMID: 37290075 DOI: 10.1063/5.0150823] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/17/2023] [Indexed: 06/10/2023] Open
Abstract
We present the observation of the N2-H2O van der Waals complex in the 2OH stretch overtone region. The high-resolution jet cooled spectra were measured using a sensitive continuous wave cavity ringdown spectrometer. Several bands were observed and vibrationally assigned in terms of ν1, ν2, and ν3, the vibrational quantum numbers of the isolated H2O molecule, as (ν1'ν2'ν3')←(ν1″ν2″ν3″)=(200)←(000) and (101) ← (000). A combination band involving the excitation of the in-plane bending motion of N2 and the (101) vibration of water is also reported. The spectra were analyzed using a set of four asymmetric top rotors, each associated with a nuclear spin isomer. Several local perturbations of the (101) vibrational state were observed. These perturbations were assigned to the presence of the nearby (200) vibrational state and to the combination of (200) with intermolecular modes.
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Affiliation(s)
- R Glorieux
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain (UCLouvain), Chemin Du Cyclotron, 2 1348 Louvain-la-Neuve, Belgium
| | - B M Hays
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain (UCLouvain), Chemin Du Cyclotron, 2 1348 Louvain-la-Neuve, Belgium
| | - A S Bogomolov
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya Str. 3, Novosibirsk, Russia
| | - M Herman
- Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Faculté des Sciences, Université Libre de Bruxelles (ULB), 50 Ave. F-D Roosevelt, B-1050 Brussels, Belgium
| | - T Vanfleteren
- Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Faculté des Sciences, Université Libre de Bruxelles (ULB), 50 Ave. F-D Roosevelt, B-1050 Brussels, Belgium
| | - N Moazzen-Ahmadi
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calagry, Alberta T2N 1N4, Canada
| | - C Lauzin
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain (UCLouvain), Chemin Du Cyclotron, 2 1348 Louvain-la-Neuve, Belgium
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Lauzin C, Imbreckx AC, Foldes T, Vanfleteren T, Moazzen-Ahmadi N, Herman M. High-resolution spectroscopic study of the H2O–CO2 van der Waals complex in the 2OH overtone range. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1706776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- C. Lauzin
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - A. C. Imbreckx
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - T. Foldes
- Service de Chimie quantique et Photophysique, Faculté des Sciences, Université Libre de Bruxelles, Brussels, Belgium
| | - T. Vanfleteren
- Service de Chimie quantique et Photophysique, Faculté des Sciences, Université Libre de Bruxelles, Brussels, Belgium
| | - N. Moazzen-Ahmadi
- Department of Physics and Astronomy, University of Calgary, Calgary, Canada
| | - M. Herman
- Service de Chimie quantique et Photophysique, Faculté des Sciences, Université Libre de Bruxelles, Brussels, Belgium
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Sobyra TB, Pliszka H, Bertram TH, Nathanson GM. Production of Br2 from N2O5 and Br– in Salty and Surfactant-Coated Water Microjets. J Phys Chem A 2019; 123:8942-8953. [DOI: 10.1021/acs.jpca.9b04225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas B. Sobyra
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Helena Pliszka
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Timothy H. Bertram
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Gilbert M. Nathanson
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Asselin P, Belkhodja Y, Jabri A, Potapov A, Loreau J, van der Avoird A. Rovibrational laser jet-cooled spectroscopy of the NH 3–Ar complex in the ν2 umbrella region of NH 3: comparison between new infrared data and an ab initio calculated spectrum. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1471533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Pierre Asselin
- Sorbonne Université, CNRS, MONARIS, UMR 8233, Paris, France
| | | | - Atef Jabri
- Sorbonne Université, CNRS, MONARIS, UMR 8233, Paris, France
| | - Alexey Potapov
- Laboratory Astrophysics Group of the Max Planck Institute for Astronomy, Friedrich Schiller University Jena, Jena, Germany
| | - Jérôme Loreau
- Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Ad van der Avoird
- Theoretical Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
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