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Oliveira AP, Jalbert G, Rocha AB. Generalized oscillator strengths of carbon disulfide calculated by multireference configuration interaction. J Chem Phys 2019; 150:174116. [DOI: 10.1063/1.5090613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A. P. Oliveira
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Química, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - Ginette Jalbert
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Física, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - A. B. Rocha
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Química, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
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Martins G, Ferreira-Rodrigues AM, Rodrigues FN, de Souza GGB, Mason NJ, Eden S, Duflot D, Flament JP, Hoffmann SV, Delwiche J, Hubin-Franskin MJ, Limão-Vieira P. Valence shell electronic spectroscopy of isoprene studied by theoretical calculations and by electron scattering, photoelectron, and absolute photoabsorption measurements. Phys Chem Chem Phys 2009; 11:11219-31. [PMID: 20024391 DOI: 10.1039/b916620c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The first ab initio calculations (vertical energies and oscillator strengths) are reported for the neutral electronic transitions of isoprene (2-methyl-1,3-butadiene), CH(2)CHC(CH(3))CH(2). The VUV photoabsorption spectroscopy of the molecule is presented in the energy range 4.6 to 10.8 eV (270-125 nm) with the highest resolution yet reported above 6.05 eV, revealing new spectral features. Valence and Rydberg transitions have been assigned in accordance with the theoretical results and the associated vibronic series have been analysed. The absolute photoabsorption cross sections at energies below 6.89 eV have been used to calculate the photolysis lifetime of isoprene in the upper stratosphere (20-50 km). Electron energy loss spectroscopy (EELS) measurements have enabled further photoabsorption cross sections to be derived in the range 9-28 eV. The first ab initio calculations have been carried out to determine excitation energies to the lowest energy ionic states of isoprene. The calculations are compared with the He(i) photoelectron spectrum (8 to 17 eV) and new vibrational structure is observed in the first photoelectron band.
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Affiliation(s)
- G Martins
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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Michelin S, de Campos A, da Silva L, Falck A, y Castro E, Pessoa O, Oliveira H, Lee MT. Angle-resolved inner-shell excitation in N2 molecules by electron impact. Chem Phys 2003. [DOI: 10.1016/s0301-0104(03)00360-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Eustatiu I, Francis J, Tyliszczak T, Turci C, Kilcoyne A, Hitchcock A. Generalized oscillator strengths for inner-shell excitation of SF6 recorded with a high-performance electron energy loss spectrometer. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00145-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Eustatiu I, Tyliszczak T, Hitchcock A. Inner-shell electron energy-loss spectroscopy of SF6 at very high momentum transfer. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(98)01446-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rocco M, Lopes M, Lucas C, Hollauer E, Monteiro E, de Souza G. Excitation of the methyl methacrylate molecule in the VUV range by angle-resolved EELS. Chem Phys 1997. [DOI: 10.1016/s0301-0104(97)00227-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ying JF, Leung KT. Electron‐impact excitation of low‐lying preionization‐edge n→σ* and Rydberg transitions of CHF2Cl and CHFCl2: Absolute generalized oscillator strength measurement. J Chem Phys 1996. [DOI: 10.1063/1.472092] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ying JF, Leung KT. Electron-impact excitation of low-lying preionization-edge electronic and Rydberg transitions of fluoroform and chloroform: Bethe surfaces and absolute generalized oscillator strengths. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:1476-1486. [PMID: 9913038 DOI: 10.1103/physreva.53.1476] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Fomunung IW, Chen Z, Msezane AZ. Electron excitation of optically-allowed transitions in CO2, SF6, CO, F2, and SO2. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:806-817. [PMID: 9912953 DOI: 10.1103/physreva.53.806] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Turci CC, Francis JT, Tyliszczak T, Hitchcock AP. Electron-impact core excitation of SF6. II. Generalized oscillator strengths in the S 2p region. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:4678-4688. [PMID: 9912807 DOI: 10.1103/physreva.52.4678] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bozek JD, Saito N, Suzuki IH. Asymmetry parameters for CO2 around the C K and O K ionization edges from the anisotropy of the ion distributions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:4563-4574. [PMID: 9912145 DOI: 10.1103/physreva.51.4563] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ying JF, Leung KT. Atomic‐site‐specific nonoptical excitation spectroscopy of chlorofluoromethanes CF4−nCln (n=0–4): Absolute generalized oscillator strength measurement of below‐edge electronic excitations of C 1s and Cl 2p shells. J Chem Phys 1994. [DOI: 10.1063/1.468288] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ying JF, Leung KT. Absolute transition probability measurement of valence‐shell electronic structure of CF4 and CCl4: Bethe surfaces, and dipole‐dominated preionization‐edge valence and Rydberg states. J Chem Phys 1994. [DOI: 10.1063/1.466911] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bielschowsky CE. Experimental and theoretical determination of the optical and generalized oscillator strengths for the inner-shell excitation of C2H2. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 49:2399-2404. [PMID: 9910510 DOI: 10.1103/physreva.49.2399] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ying JF, Leung KT. Nonoptical excited state spectroscopy of CHF2Cl: Characterization of nondipole n→σ* valence transitions by angle‐resolved electron energy loss spectroscopy. J Chem Phys 1994. [DOI: 10.1063/1.466683] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ying JF, Daniels TA, Mathers CP, Zhu H, Leung KT. Absolute transition probability measurement of nondipole valence‐shell (7–70 eV) electronic transitions of SF6 by angle‐resolved electron energy loss spectroscopy. J Chem Phys 1993. [DOI: 10.1063/1.465149] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ying J, Mathers C, Leung K, Pritchard H, Winstead C, McKoy V. Observation of a “new” quadrupole transition at 7.7 eV in CF3Cl by momentum-transfer-resolved electron energy loss spectroscopy. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)89328-f] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Optical and generalized oscillator strengths for inner-shell excitations in Ar and CO2. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0166-1280(93)85036-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ying JF, Mathers CP, Leung KT. Momentum-transfer dependence of S 2p excitations of sulfur hexafluoride by angle-resolved electron-energy-loss spectroscopy. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:R5-R8. [PMID: 9908982 DOI: 10.1103/physreva.47.r5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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