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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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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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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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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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Lauzin C, Cauët E, Demaison J, Herman M, Stoll H, Liévin J. Accurate ground-state potential energy surfaces of the C2H2–Kr and C2H2–Xe van der Waals complexes. Mol Phys 2012. [DOI: 10.1080/00268976.2012.713524] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- C. Lauzin
- a Service de Chimie quantique et Photophysique, CP160/09 , Université Libre de Bruxelles , 50 ave. F. D. Roosevelt, B-1050 Brussels, Belgium
| | - E. Cauët
- a Service de Chimie quantique et Photophysique, CP160/09 , Université Libre de Bruxelles , 50 ave. F. D. Roosevelt, B-1050 Brussels, Belgium
| | - J. Demaison
- b Laboratoire de Physique des Lasers, Atomes, et Molécules , Université de Lille I , F-59655 Villeneuve d'Ascq Cédex, France
| | - M. Herman
- b Laboratoire de Physique des Lasers, Atomes, et Molécules , Université de Lille I , F-59655 Villeneuve d'Ascq Cédex, France
| | - H. Stoll
- c Institut für Theoretische Chemie, Universität Stuttgart , D-70550 Stuttgart , Germany
| | - J. Liévin
- a Service de Chimie quantique et Photophysique, CP160/09 , Université Libre de Bruxelles , 50 ave. F. D. Roosevelt, B-1050 Brussels, Belgium
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Didriche K, Földes T, Lauzin C, Golebiowski D, Liévin J, Herman M. Experimental 2CH excitation in acetylene-containing van der Waals complexes. Mol Phys 2012. [DOI: 10.1080/00268976.2012.705347] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K. Didriche
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
| | - T. Földes
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
| | - C. Lauzin
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
| | - D. Golebiowski
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
| | - J. Liévin
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
| | - M. Herman
- a Laboratoire de Chimie quantique et Photophysique , Université libre de Bruxelles , Bruxelles , Belgium
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de Ghellinck d’Elseghem Vaernewijck X, Golebiowski D, Herman M. Femto-Fourier transform-cavity enhanced absorption spectroscopy in a supersonic expansion. Mol Phys 2012. [DOI: 10.1080/00268976.2012.701342] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - D. Golebiowski
- a Chimie quantique et Photophysique CP160/09, Université Libre de Bruxelles , Bruxelles , Belgium
| | - M. Herman
- a Chimie quantique et Photophysique CP160/09, Université Libre de Bruxelles , Bruxelles , Belgium
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Leforestier C, Tekin A, Jansen G, Herman M. First principles potential for the acetylene dimer and refinement by fitting to experiments. J Chem Phys 2011; 135:234306. [DOI: 10.1063/1.3668283] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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