1
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Tóbiás R, Simkó I, Császár AG. Unusual Dynamics and Vibrational Fingerprints of van der Waals Dimers Formed by Linear Molecules and Rare-Gas Atoms. J Chem Theory Comput 2023. [PMID: 38032107 DOI: 10.1021/acs.jctc.3c00914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Detailed structural, dynamical, and vibrational analyses have been performed for systems composed of linear triatomic molecules solvated by a single rare-gas atom, He, Ne, or Ar. Among the chromophores of these van der Waals (vdW) dimers, there are four neutral molecules (CO2, CS2, N2O, and OCS) and six molecular cations (HHe2+, HNe2+, HAr2+, HHeNe+, HHeAr+, and HNeAr+), both of apolar and polar nature. Following the exploration of bonding preferences, high-level four-dimensional (4D) potential energy surfaces (PESs) have been developed for 24 vdW dimers, keeping the two intramonomer bond lengths fixed. For these 24 complexes, over 1500 bound vibrational states have been obtained via quasi-variational nuclear-motion computations, employing exact kinetic-energy operators together with the accurate 4D PESs and their 2D/3D cuts. The reduced-dimensional (2D to 4D) dimer models have been compared with full-dimensional (6D) ones in the cases of the neutral CO2·Ar and charged HHe2+·He dimers, corroborating the high accuracy of the 2D to 4D vibrational energies. The reduced-dimensional models suggest that (a) while the equilibrium structures are T-shaped and planar, the effective ground-state structures are nonplanar, (b) certain bound states belong to collinear molecular structures, even when they are not minima, (c) the vdW vibrations are heavily mixed and many states have amplitudes corresponding to both the T-shaped and collinear structures, (d) there are a few dimers, for which even some of the vdW fundamentals lie above the first dissociation limit, and (e) the vdW vibrations are almost fully decoupled from the intramonomer bending motion.
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Affiliation(s)
- Roland Tóbiás
- HUN-REN-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary
| | - Irén Simkó
- Hevesy György PhD School of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
- Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Attila G Császár
- HUN-REN-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary
- Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
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2
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Briant M, Mestdagh JM, Gaveau MA, Poisson L. Reaction dynamics within a cluster environment. Phys Chem Chem Phys 2022; 24:9807-9835. [PMID: 35441619 DOI: 10.1039/d1cp05783a] [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
This perspective article reviews experimental and theoretical works where rare gas clusters and helium nanodroplets are used as a nanoreactor to investigate chemical dynamics in a solvent environment. A historical perspective is presented first followed by specific considerations on the mobility of reactants within these reaction media. The dynamical response of pure clusters and nanodroplets to photoexcitation is shortly reviewed before examining the role of the cluster (or nanodroplet) degrees of freedom in the photodynamics of the guest atoms and molecules.
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Affiliation(s)
- Marc Briant
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | | | - Marc-André Gaveau
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | - Lionel Poisson
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France.
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3
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Glorieux R, Lauzin C, Barclay AJ, Herman M, Moazzen-Ahmadi N. Spectroscopic study of the tunneling dynamics in N 2-water observed in the O-D stretch region. J Chem Phys 2021; 155:174309. [PMID: 34742199 DOI: 10.1063/5.0071732] [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 O-D stretch rovibrational spectra of N2-D2O and N2-DOH were measured and analyzed. A combination band involving the in-plane N2 bending vibration was also observed. These bands were recorded using a pulsed-slit supersonic jet expansion and a mid-infrared tunable optical parametric oscillator. The spectra were analyzed by considering the feasible tunneling motions, and transitions were fitted to independent asymmetric rotors for each tunneling state. The rotational constants of the four tunneling components of N2-D2O were retrieved for the excited vibrational states. A two order of magnitude increase in the tunneling splittings is observed for the asymmetric O-D stretch (ν3 in D2O) excitation compared to the symmetric stretch (ν1 in D2O) and to the ground vibrational state. This last finding indicates that the ν3 vibrational state is likely perturbed by a combination state that includes ν1. Finally, the observation of a local perturbation in the ν3 vibrational band, affecting the positions of few rovibrational levels, provides an experimental lower limit of the dissociation energy of the complex, D0 > 120 cm-1.
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Affiliation(s)
- R Glorieux
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain (U.C.L.), Chemin du cyclotron 2, 1348 Louvain-la-Neuve, Belgium
| | - C Lauzin
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain (U.C.L.), Chemin du cyclotron 2, 1348 Louvain-la-Neuve, Belgium
| | - A J Barclay
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calagry, Alberta T2N 1N4, Canada
| | - 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
| | - N Moazzen-Ahmadi
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calagry, Alberta T2N 1N4, Canada
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4
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Martins JBL, Quintino RP, Politi JRDS, Sethio D, Gargano R, Kraka E. Computational analysis of vibrational frequencies and rovibrational spectroscopic constants of hydrogen sulfide dimer using MP2 and CCSD(T). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118540. [PMID: 32502813 DOI: 10.1016/j.saa.2020.118540] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/18/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Previous studies have shown that the weakly bonded H2S dimer demands high level quantum chemical calculations to reproduce experimental values. We investigated the hydrogen bonding of H2S dimer using MP2 and CCSD(T) levels of theory in combination with aug-cc-pV(D,T,Q)Z basis sets. More precisely, the binding energies, potential energy curves, rovibrational spectroscopic constants, decomposition lifetime, and normal vibrational frequencies were calculated. In addition, we introduced the local mode analysis of Konkoli-Cremer to quantify the hydrogen bonding in the H2S dimer as well as providing for the first time the comprehensive decomposition of normal vibrational modes into local modes contributions, and a decomposition lifetime based on rate constant. The local mode force constant of the H2S dimer hydrogen bond is smaller than that of the water dimer, in accordance with the weaker hydrogen bonding in the H2S dimer.
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Affiliation(s)
- João B L Martins
- Institute of Chemistry, University of Brasília, Brasília, DF 70910-900, Brazil.
| | - Rabeshe P Quintino
- Institute of Chemistry, University of Brasília, Brasília, DF 70910-900, Brazil
| | - José R Dos S Politi
- Institute of Chemistry, University of Brasília, Brasília, DF 70910-900, Brazil
| | - Daniel Sethio
- Computational and Theoretical Chemistry Group (CATCO), Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75275-0314, United States
| | - Ricardo Gargano
- Institute of Physics, University of Brasília, Brasília, DF 70910-900, Brazil
| | - Elfi Kraka
- Computational and Theoretical Chemistry Group (CATCO), Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75275-0314, United States
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5
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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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6
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Han C, Pei X, Zhu H, Fan H. A new four-dimensional ab initio potential energy surface and rovibrational spectra for the C2H2–Ar complex. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1705414] [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)
- Chaoying Han
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
| | - Xin Pei
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
| | - Hua Zhu
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
| | - Hongjun Fan
- School of Biological Engineering, Sichuan University of Science & Engineering, Zigong, People’s Republic of China
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7
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Briant M, Viel A, Mengesha E, Gaveau MA, Soep B, Mestdagh JM, Jamet P, Launay JM, Poisson L. Large amplitude motion within acetylene-rare gas complexes hosted in helium droplets. Phys Chem Chem Phys 2019; 21:1038-1045. [PMID: 30289418 DOI: 10.1039/c8cp04609c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Near-infrared spectroscopy of the C2H2-Ar, Kr complexes was performed in the spectral region overlapping the ν3/ν2 + ν4 + ν5 Fermi-type resonance of C2H2. The experiment was conducted along the HElium NanoDroplet Isolation (HENDI) technique in order to study the coupling dynamics between a floppy molecular system (C2H2-Ar and C2H2-Kr) and a mesoscopic quantum liquid (the droplet). Calculations were performed using a spectral element based close-coupling program and state-of-the-art 2-dimensional potential energy surfaces to determine the bound states of the C2H2-Ar and C2H2-Kr complexes and simulate the observed spectra. This furnished a quantitative basis to unravel how the superfluid and non-superfluid components of the droplet affect the rotation and the deformation dynamics of the hosted complex.
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Affiliation(s)
- Marc Briant
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, F-91191 Gif-sur-Yvette, France.
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8
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Orr BJ. Collision-induced rovibrational energy transfer in small polyatomic molecules: the role of intramolecular perturbations. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1490463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Brian J. Orr
- Department of Physics and Astronomy, MQ Photonics Research Centre, Macquarie University, Sydney, Australia
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9
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Vanfleteren T, Földes T, Herman M, Liévin J, Loreau J, Coudert LH. Experimental and theoretical investigations of H 2O-Ar. J Chem Phys 2018; 147:014302. [PMID: 28688396 DOI: 10.1063/1.4990738] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have used continuous-wave cavity ring-down spectroscopy to record the spectrum of H2O-Ar in the 2OH excitation range of H2O. 24 sub-bands have been observed. Their rotational structure (Trot = 12 K) is analyzed and the lines are fitted separately for ortho and para species together with microwave and far infrared data from the literature, with a unitless standard deviation σ=0.98 and 1.31, respectively. Their vibrational analysis is supported by a theoretical input based on an intramolecular potential energy surface obtained through ab initio calculations and computation of the rotational energy of sub-states of the complex with the water monomer in excited vibrational states up to the first hexad. For the ground and (010) vibrational states, the theoretical results agree well with experimental energies and rotational constants in the literature. For the excited vibrational states of the first hexad, they guided the assignment of the observed sub-bands. The upper state vibrational predissociation lifetime is estimated to be 3 ns from observed spectral linewidths.
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Affiliation(s)
- Thomas Vanfleteren
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Tomas Földes
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Michel Herman
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Jacques Liévin
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Jérôme Loreau
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Laurent H Coudert
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Université Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
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10
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Herman M, Földes T, Didriche K, Lauzin C, Vanfleteren T. Overtone spectroscopy of molecular complexes containing small polyatomic molecules. INT REV PHYS CHEM 2016. [DOI: 10.1080/0144235x.2016.1171039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Moazzen-Ahmadi N, McKellar ARW, Fernández B, Farrelly D. The infrared spectrum of the Ne-C2D2 complex. J Chem Phys 2015; 143:204307. [PMID: 26627959 DOI: 10.1063/1.4936359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Infrared spectra of Ne-C2D2 are observed in the region of the ν3 fundamental band (asymmetric C-D stretch, ≈2440 cm(-1)) using a tunable optical parametric oscillator to probe a pulsed supersonic slit jet expansion from a cooled nozzle. Like helium-acetylene, this system lies close to the free rotor limit, making analysis tricky because stronger transitions tend to pile up close to monomer (C2D2) rotation-vibration transitions. Assignments are aided by predicted rotational energies calculated from a published ab initio intermolecular potential energy surface. The analysis extends up to the j = 3←2 band, where j labels C2D2 rotation within the dimer, and is much more complete than the limited infrared assignments previously reported for Ne-C2H2 and Ne-C2HD. Two previous microwave transitions within the j = 1 state of Ne-C2D2 are reassigned. Coriolis model fits to the theoretical levels and to the spectrum are compared. Since the variations observed as a function of C2D2 vibrational excitation are comparable to those noted between theory and experiment, it is evident that more detailed testing of theory will require vibrational averaging over the acetylene intramolecular modes.
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Affiliation(s)
- N Moazzen-Ahmadi
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calgary, Alberta T2N 1N4, Canada
| | - A R W McKellar
- National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Berta Fernández
- Department of Physical Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - David Farrelly
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, USA
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12
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Suas-David N, Vanfleteren T, Földes T, Kassi S, Georges R, Herman M. The Water Dimer Investigated in the 2OH Spectral Range Using Cavity Ring-Down Spectroscopy. J Phys Chem A 2015; 119:10022-34. [DOI: 10.1021/acs.jpca.5b06746] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N. Suas-David
- Institut
de Physique de Rennes, UMR 6251, Campus de Beaulieu,
Bât. 11C, Université de Rennes 1/CNRS, F-35042 Rennes
Cedex, France
| | - T. Vanfleteren
- Laboratoire
de Chimie quantique et Photophysique, CP160/09 Faculté des
Sciences, Université Libre de Bruxelles, 50, ave. Roosevelt, B-1050 Bruxelles, Belgium
| | - T. Földes
- Laboratoire
de Chimie quantique et Photophysique, CP160/09 Faculté des
Sciences, Université Libre de Bruxelles, 50, ave. Roosevelt, B-1050 Bruxelles, Belgium
| | - S. Kassi
- Laboratoire
Interdisciplinaire de Physique, UMR 5588, Université de Grenoble Alpes/CNRS, F-38041 Grenoble, France
| | - R. Georges
- Institut
de Physique de Rennes, UMR 6251, Campus de Beaulieu,
Bât. 11C, Université de Rennes 1/CNRS, F-35042 Rennes
Cedex, France
| | - M. Herman
- Laboratoire
de Chimie quantique et Photophysique, CP160/09 Faculté des
Sciences, Université Libre de Bruxelles, 50, ave. Roosevelt, B-1050 Bruxelles, Belgium
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13
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Vanfleteren T, Földes T, Liévin J, Herman M. Overtone, 2NH (ν1+ν3) spectroscopy of NH3–Ar and NH3–Kr. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1072252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Golebiowski D, Földes T, Vanfleteren T, Herman M, Perrin A. Complementary cavity-enhanced spectrometers to investigate the OH + CH combination band in trans-formic acid. J Chem Phys 2015; 143:014201. [DOI: 10.1063/1.4923256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D. Golebiowski
- Service de Chimie quantique et Photophysique, CP 160/09, Faculté des Sciences, Université libre de Bruxelles, Ave. F.D. Roosevelt, Brussels B-1050, Belgium
| | - T. Földes
- Service de Chimie quantique et Photophysique, CP 160/09, Faculté des Sciences, Université libre de Bruxelles, Ave. F.D. Roosevelt, Brussels B-1050, Belgium
| | - T. Vanfleteren
- Service de Chimie quantique et Photophysique, CP 160/09, Faculté des Sciences, Université libre de Bruxelles, Ave. F.D. Roosevelt, Brussels B-1050, Belgium
| | - M. Herman
- Service de Chimie quantique et Photophysique, CP 160/09, Faculté des Sciences, Université libre de Bruxelles, Ave. F.D. Roosevelt, Brussels B-1050, Belgium
| | - A. Perrin
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, LISA-UMR7583, CNRS/ Université Paris Est Creteil and Université Paris 7 Diderot, Institut Paul Simon Laplace, 61 Ave. du Général de Gaulle, 94010 Creteil cedex, France
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15
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Vanfleteren T, Földes T, Herman M. Analysis of a perpendicular band in Ar–H2O with origin close to the ν1+ν3, R(0) line in H2O. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Moazzen-Ahmadi N, McKellar ARW, Fernández B, Farrelly D. The infrared spectrum of the He-C2D2 complex. J Chem Phys 2015; 142:084312. [PMID: 25725736 DOI: 10.1063/1.4913492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Spectra of the helium-acetylene complex are elusive because this weakly bound system lies close to the free rotor limit. Previously, limited assignments of He-C2D2 transitions in the R(0) region of the ν3 fundamental band (≈2440 cm(-1)) were published. Here, new He-C2D2 infrared spectra of this band are obtained using a tunable optical parametric oscillator laser source to probe a pulsed supersonic slit jet expansion from a cooled nozzle, and the analysis is extended to the weaker and more difficult P(1) and R(1) regions. A term value approach is used to obtain a consistent set of "experimental" energy levels. These are compared directly with calculations using two recently reported ab initio intermolecular potential energy surfaces, which exhibit small but significant differences. Rovibrational energies for the He-C2H2 complex are also calculated using both surfaces. A Coriolis model, useful for predicting spectral intensities, is used to interpret the energy level patterns, and a comparison with the isoelectronic complex He-CO is made.
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Affiliation(s)
- N Moazzen-Ahmadi
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calgary, Alberta T2N 1N4, Canada
| | - A R W McKellar
- National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Berta Fernández
- Department of Physical Chemistry, and Center for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - David Farrelly
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, USA
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17
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Vanfleteren, Földes T, Vander Auwera J, Herman M. Analysis of a remarkable perpendicular band in Kr H2O with origin close to the ν1+ν3 R(0) line in H2O. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2014.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Földes T, Lauzin C, Vanfleteren T, Herman M, Liévin J, Didriche K. High-resolution, near-infrared CW-CRDS, andab initioinvestigations of N2O–HDO. Mol Phys 2014. [DOI: 10.1080/00268976.2014.953611] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Conte R, Houston PL, Bowman JM. Trajectory Study of Energy Transfer and Unimolecular Dissociation of Highly Excited Allyl with Argon. J Phys Chem A 2014; 118:7742-57. [DOI: 10.1021/jp5062013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Riccardo Conte
- Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - Paul L. Houston
- School
of Chemistry and Biochemistry Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Department
of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14852, United States
| | - Joel M. Bowman
- Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
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Zang L, Dai W, Zheng L, Duan C, Lu Y, Yang M. Theoretical prediction of the linear isomers for rare gas-carbon disulfide complexes: He-CS₂, Ne-CS₂, and Ar-CS₂. J Chem Phys 2014; 140:114310. [PMID: 24655183 DOI: 10.1063/1.4868325] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Theoretical studies of the potential energy surfaces (PESs) and bound states are performed for rare gas-carbon disulfide complexes, He-CS2, Ne-CS2, and Ar-CS2. Three two-dimensional intermolecular PESs are constructed from ab initio data points which are calculated at the CCSD(T) level with aug-cc-pVTZ basis set supplemented with bond functions. We find that the three PESs have very similar features and each PES can be characterized by a global T-shaped minimum, two equivalent local linear minima, and the saddle points between them. The T-shaped isomer is energetically more stable than the linear isomer for each complex. The linear isomers, which have not been observed in experiment so far, are predicted from our PESs and further identified by bound state calculations. Moreover, we assign several intermolecular vibrational states for both the T-shaped and linear isomers of the three complexes via the analysis of wavefunctions. The corresponding vibrational frequencies are calculated from the bound state energies for these assigned states. These frequencies could be helpful for further experimental studies, especially for the linear isomers. We also calculate the rovibrational transition frequencies for the three T-shaped isomers and the pure rotational transition frequencies for the linear isomers, respectively. The accuracy of the PESs is validated by the good agreement between theoretical and experimental results for the rovibrational transition frequencies and spectroscopic parameters.
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Affiliation(s)
- Limin Zang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Centre for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Wei Dai
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Centre for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Limin Zheng
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Centre for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Chuanxi Duan
- College of Physical Science and Technology, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Yunpeng Lu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Minghui Yang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Centre for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
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