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Tamassia F, Cané E, Fusina L, Di Lonardo G. The experimental equilibrium structure of acetylene. Phys Chem Chem Phys 2016; 18:1937-44. [PMID: 26687993 DOI: 10.1039/c5cp05997f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The empirical equilibrium structure of acetylene has been derived by exploiting the very precise experimental rotational constants available in the literature for the 10 isotopologues relative to all the possible combinations of H, D, (12)C and (13)C atoms. The geometry obtained when data for all species are fitted together is: re(CH) = 106.167(14) pm and re(CC) = 120.2866(72) pm. This determination shows some systematic residuals due to the singly D-substituted isotopologues. If we exclude such species from the fit, we obtain our most precise evaluation: re(CH) = 106.1689(23) pm and re(CC) = 120.2817(12) pm. The possibility of a breakdown of the Born-Oppenheimer approximation has also been tested.
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Affiliation(s)
- Filippo Tamassia
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale del Risorgimento 4, I-40136 Bologna, Italy.
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Villa M, Fusina L, Di Lonardo G, De Ghellinck d’Elseghem Vaernewijck X, Herman M. Femto-FT-CEAS investigation of rare acetylene isotopologues (H12C13CD, D12C13CH and D12C13CD). Mol Phys 2013. [DOI: 10.1080/00268976.2013.771805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M. Villa
- Dipartimento di Chimica Industriale ‘Toso Montanari’, Università di Bologna , Viale Risorgimento 4, I-40136, Viale Risorgimento, Bologna, Italy
| | - L. Fusina
- Dipartimento di Chimica Industriale ‘Toso Montanari’, Università di Bologna , Viale Risorgimento 4, I-40136, Viale Risorgimento, Bologna, Italy
| | - G. Di Lonardo
- Dipartimento di Chimica Industriale ‘Toso Montanari’, Università di Bologna , Viale Risorgimento 4, I-40136, Viale Risorgimento, Bologna, Italy
| | | | - M. Herman
- Laboratoire de Chimie quantique et Photophysique CP160/09, Université Libre de Bruxelles , Ave. F.D. Roosevelt 50, B-1050, Brussels, Belgium
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Herman M, Perry DS. Molecular spectroscopy and dynamics: a polyad-based perspective. Phys Chem Chem Phys 2013; 15:9970-93. [DOI: 10.1039/c3cp50463h] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Predoi-Cross A, Herman M, Fusina L, Di Lonardo G. The infrared spectrum of13C2H2in the 60–2600 cm−1region: bending states up tov4 + v5 = 4. Mol Phys 2012. [DOI: 10.1080/00268976.2012.705345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Adriana Predoi-Cross
- a Alberta Terrestrial Imaging Centre, Department of Physics and Astronomy , University of Lethbridge , 4401 University Drive, Lethbridge AB , T1K 3M4 , Canada
| | - Michel Herman
- b Laboratoire de Chimie Quantique et Photophysique , CP 160/09, Faculté des Sciences, Université Libre de Bruxelles, 50 Av. , Roosevelt , B-1050 Bruxelles , Belgium
| | - Luciano Fusina
- c Dipartimento di Chimica Fisica e Inorganica , Facoltà di Chimica, Industriale, Università di Bologna, Viale Risorgimento 4, 40136 , Bologna , Italy
| | - Gianfranco Di Lonardo
- c Dipartimento di Chimica Fisica e Inorganica , Facoltà di Chimica, Industriale, Università di Bologna, Viale Risorgimento 4, 40136 , Bologna , Italy
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Vaernewijck XDGD, Didriche K, Lauzin C, Rizopoulos A, Herman M, Kassi S. Cavity enhanced FTIR spectroscopy using a femto OPO absorption source. Mol Phys 2011. [DOI: 10.1080/00268976.2011.602990] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Orr BJ. Spectroscopy and energetics of the acetylene molecule: dynamical complexity alongside structural simplicity. INT REV PHYS CHEM 2010. [DOI: 10.1080/01442350600892577] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Brian J. Orr
- a Department of Physics and Centre for Lasers and Applications , Macquarie University , Sydney , NSW 2109 , Australia
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Affiliation(s)
- D. BERMEJO
- a Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas , Serrano 123, 28006 , Madrid , Spain
| | - G. DI LONARDO
- b Dipartimento di Chimica Fisica e Inorganica , Università di Bologna , Viale del Risorgimento 4, I-40136 , Bologna , Italy
| | - J. L. DOMÉNECH
- a Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas , Serrano 123, 28006 , Madrid , Spain
| | - L. FUSINA
- b Dipartimento di Chimica Fisica e Inorganica , Università di Bologna , Viale del Risorgimento 4, I-40136 , Bologna , Italy
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HURTMANS D, KASSI S, DEPIESSE C, HERMAN M. Assignment of a perturbation in the FT-ICLAS spectrum of 12C2H2 around 12 709.5 cm−1. Mol Phys 2009. [DOI: 10.1080/00268970210138904] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D. HURTMANS
- a Laboratoire de Chimie Physique Moléculaire, CP160/09 , Université libre de Bruxelles , Roosevelt Ave., 50, B-1050 , Brussels , Belgium
| | - S. KASSI
- a Laboratoire de Chimie Physique Moléculaire, CP160/09 , Université libre de Bruxelles , Roosevelt Ave., 50, B-1050 , Brussels , Belgium
| | - C. DEPIESSE
- a Laboratoire de Chimie Physique Moléculaire, CP160/09 , Université libre de Bruxelles , Roosevelt Ave., 50, B-1050 , Brussels , Belgium
| | - M. HERMAN
- a Laboratoire de Chimie Physique Moléculaire, CP160/09 , Université libre de Bruxelles , Roosevelt Ave., 50, B-1050 , Brussels , Belgium
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Mohamed KA. Q branch features in the hot parallel bands of (13)C(2)H(2) in the three micron region. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:762-765. [PMID: 19111502 DOI: 10.1016/j.saa.2008.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Accepted: 11/15/2008] [Indexed: 05/27/2023]
Abstract
A systematic study of the high-resolution spectrum of (13)C(2)H(2) in the 3microm spectral region shows Q branch features in five hot parallel bands. These bands are due to the nu(3)+nu(4) (Pi(u))<--nu(4) (Pi(g)), nu(3)+nu(5) (Pi(g))<--nu(5)(Pi(u)), nu(3)+2nu(4) (Delta(u))<--2nu(4)(Delta(g)), nu(3)+2nu(5) (Delta(u))<--2nu(5)(Delta(g)) and nu(3)+nu(4)+nu(5)(Delta(g))<--nu(4)+nu(5)(Delta(u)) transitions. Sub-Q-branches (Q(e<--f) and Q(f<--e))are found to be resolved in the first three hot bands. More than 70 Q branch lines have been assigned, spread over the five hot bands. We have applied separate linear least squares fit to the transition wavenumbers of each Q branch/sub-Q-branches, which have yielded values of band origins and rotational constants, in agreement with those derived from the analysis of the P and R branches in earlier work. The analysis of the sub-Q-branches have also provided values of the l-doubling constants. This is the first report on the observation of Q branch lines in Delta-Delta hot bands, in the FTIR spectrum of (13)C(2)H(2).
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Affiliation(s)
- K A Mohamed
- Department of Physics, Aligarh Muslim University, Uttar Pradesh, India.
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Guss J, Metsälä M, Vainio M, Vaittinen O, Halonen L. Laser locked cavity ringdown spectroscopy of the ( 31-) local mode band system of H 13 C 13CH. Mol Phys 2007. [DOI: 10.1080/00268970601129068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Makarov VI, Kochubei SA, Khmelinskii IV. State dynamics of acetylene excited to individual rotational level of the V12K10,1,2 subbands. J Chem Phys 2007; 126:094302. [PMID: 17362104 DOI: 10.1063/1.2437205] [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 dynamics of the IR emission induced by excitation of the acetylene molecule at the 3(2) Ka2, A1Au<--4(1) la1, X1Sigmag+ transition was investigated. Vibrationally resolved IR emission spectra were recorded at different delay times after the laser excitation pulse. The observed IR emission was assigned to transitions between vibrational levels of the acetylene molecule in the ground state. Values of the relaxation parameters of different vibrational levels of the ground state were obtained. The Ti-->Tj transition was detected by cavity ring-down spectroscopy in the 455 nm spectral range after excitation of the acetylene molecule at the same transition. Rotationally resolved spectra of the respective transition were obtained and analyzed at different delay times after the laser excitation pulse. The dynamics of the S1-->Tx-->T1-->S0 transitions was investigated, and the relaxation parameter values were estimated for the T1 state.
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Affiliation(s)
- Vladimir I Makarov
- Department of Chemistry, University of Puerto Rico, Rio Piedras, P.O. Box 23346, San Juan, Puerto Rico
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Metsälä M, Guss J, Vaittinen O, Martinez RZ, Halonen L. High repetition rate cavity ringdown spectroscopy of vibrational overtones of H13C13CH at around 12200cm−1. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Makarov VI, Kochubei SA, Khmelinskii IV. Excited-state dynamics of acetylene excited to individual rotational level of the V04K01 subband. J Chem Phys 2006; 124:044313. [PMID: 16460168 DOI: 10.1063/1.2160510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dynamics of the IR emission induced by excitation of the acetylene molecule using the (3(2)K(a) (0,1,2),A (1)A(u)<--4(1)l(a) (1),X (1)Sigma(g) (+)) transition was investigated. The observed IR emission was assigned to transitions between the ground-state vibrational levels. Acetylene fluorescence quenching induced by external electric and magnetic fields acting upon the system prepared using the (3(4)K(a) (1),A (1)A(u)<--0(0)l(a) (0),X (1)Sigma(g) (+)) excitation was also studied. External electric field creates an additional radiationless pathway to the ground-state levels, coupling levels of the A (1)A(u) excited state to the quasiresonant levels of the X (1)Sigma(g) (+) ground state. The level density of the ground state in the vicinity of the excited state is very high, thus the electric-field-induced transition is irreversible, with the rate constant described by the Fermi rule. Magnetic field alters the decay profile without changing the fluorescence quantum yield in collisionless conditions. IR emission from the CCH transient was detected, and was also affected by the external electric and magnetic fields. Acetylene predissociation was demonstrated to proceed by the direct S(1)-->S(0) mechanism. The results were explained using the previously developed theoretical approach, yielding values of the relevant model parameters.
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Affiliation(s)
- Vladimir I Makarov
- Department of Chemistry, University of Puerto Rico, Rio Piedras, P.O. Box 23346, San Juan, Puerto Rico 00931-3346.
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Makarov VI, Khmelinskii IV. Double optical-IR resonance effect for the single rotational level of the vibronic transition of C2H2. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.07.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yang S, Metsälä M, Lantta T, Suero P, Martinez R, Vaittinen O, Halonen L. High-resolution Fourier-transform intra-cavity laser absorption study of H12C13CH and H13C13CH at around 12 600 cm−1: a case of strong anharmonic resonances. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.08.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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IDRISSI MIEL, ZHILINSKII B, GASPARD P, HERMAN M. The integrated number of vibrational states in acetylene (12C2H2,13C2H2,12C2D2). Mol Phys 2003. [DOI: 10.1080/0026897021000024324] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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FUSINA L, BRAMATI G, MAZZAVILLANI A, DI LONARDO G. The anharmonic resonances in the infrared spectrum of12C13CH2. Mol Phys 2003. [DOI: 10.1080/00268970210159479] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Silva ML, Jacobson MP, Duan Z, Field RW. Unexpected simplicity in the S1–S0 dispersed fluorescence spectra of 13C2H2. J Chem Phys 2002. [DOI: 10.1063/1.1469018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mellouki A, Liévin J, Herman M. The vibrational spectrum of pyrrole (C4H5N) and furan (C4H4O) in the gas phase. Chem Phys 2001. [DOI: 10.1016/s0301-0104(01)00447-5] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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WEIRAUCH G, IDRISSI MIEL, VANDER AUWERA J, HERMAN M, CAMPARGUE A. The absorption spectrum of12C2D2in the 10000–12500 cm−1spectral region. Mol Phys 2001. [DOI: 10.1080/00268970010039572] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hoshina K, Iwasaki A, Yamanouchi K, Jacobson MP, Field RW. The infrared-ultraviolet dispersed fluorescence spectrum of acetylene: New classes of bright states. J Chem Phys 2001. [DOI: 10.1063/1.1333006] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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WEIRAUCH G, CAMPARGUE A, IDRISSI MIEL, HERMAN M. The absorption spectrum of12C2H2IV. The regions 7600–9200 cm−1and 10600–11500 cm−1. Mol Phys 2001. [DOI: 10.1080/00268970010008388] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Zhilinskiı́ BI, El Idrissi MI, Herman M. The vibrational energy pattern in acetylene (VI): Inter- and intrapolyad structures. J Chem Phys 2000. [DOI: 10.1063/1.1316001] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Srivastava HK, Conjusteau A, Mabuchi H, Callegari A, Lehmann KK, Scoles G, Silva ML, Field RW. Rovibrational spectroscopy of the v=6 manifold in 12C2H2 and 13C2H2. J Chem Phys 2000. [DOI: 10.1063/1.1310605] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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