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Reid M, Green V, Koehler SPK. Near-threshold photodissociation dynamics of CHCl3. Phys Chem Chem Phys 2014; 16:6068-74. [PMID: 24557156 DOI: 10.1039/c3cp55348e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Energy- and angle-resolved photofragment distributions for ground-state Cl ((2)P3/2) and spin-orbit excited Cl* ((2)P1/2) have been recorded using the velocity map imaging technique after photodissociation of chloroform at wavelengths of 193 and ∼235 nm. Translational energy distributions are rather broad and peak between 0.6 and 1.0 eV. The spin-orbit branching ratios [Cl*]/[Cl] are 1 and 0.3 at 193 and 235 nm, respectively, indicating the involvement of two or more excited state surfaces. Considering the anisotropy parameters and branching ratios collectively, we conclude that the reaction at 193 nm takes place predominantly on the (1)Q1 surface, while the (3)Q1 surface gains importance at lower dissociation energies around 235 nm.
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Affiliation(s)
- Mike Reid
- School of Chemistry, The University of Manchester, Manchester M13 9PL, UK.
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Melchior A, Mark Lambert H, Dagdigian PJ, Bar I, Rosenwaks S. The Photodissociation of Ground and Vibrationally Excited Halogenated Alkanes. Isr J Chem 2013. [DOI: 10.1002/ijch.199700051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Cicman P, Pelc A, Sailer W, Matejcik S, Scheier P, Märk T. Dissociative electron attachment to CHF2Cl. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00084-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Dorfman G, Melchior A, Rosenwaks S, Bar I. Vibrationally Mediated Photodissociation of Jet-Cooled CH3CF2Cl: A Probe of Energy Flow and Bond Breaking Dynamics. J Phys Chem A 2002. [DOI: 10.1021/jp014431v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriela Dorfman
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Aviva Melchior
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Salman Rosenwaks
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Ilana Bar
- The Institutes for Applied Research, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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Bar I, Rosenwaks S. Controlling bond cleavage and probing intramolecular dynamics via photodissociation of rovibrationally excited molecules. INT REV PHYS CHEM 2001. [DOI: 10.1080/01442350110076484] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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7
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Melchior A, Chen X, Bar I, Rosenwaks S. Photolysis and Spectroscopy of Vibrationally Excited C−H Overtones of CHFCl2. J Phys Chem A 2000. [DOI: 10.1021/jp000791r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aviva Melchior
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Xiangling Chen
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Ilana Bar
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Salman Rosenwaks
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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Pradeep T, Ma S, Shen J, Francisco JS, Cooks RG. Activation of Dioxygen by Halocarbon Ions. J Phys Chem A 2000. [DOI: 10.1021/jp001682f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. Pradeep
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | - Shuguang Ma
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | - Jianwei Shen
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | | | - R. Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
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Melchior A, Chen X, Bar I, Rosenwaks S. Vibrationally excited states of CH3CFCl2: Intramolecular vibrational redistribution and photodissociation dynamics. J Chem Phys 2000. [DOI: 10.1063/1.481752] [Citation(s) in RCA: 18] [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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Melchior A, Chen X, Bar I, Rosenwaks S. Alteration of Cl spin–orbit branching ratios via photodissociation of pre-excited fundamental CH3 stretch of CH3CFCl2. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)01232-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Brownsword RA, Schmiechen P, Volpp HR, Upadhyaya HP, Jung YJ, Jung KH. Chlorine atom formation dynamics in the dissociation of CH3CF2Cl(HCFC-142b) after UV laser photoexcitation. J Chem Phys 1999. [DOI: 10.1063/1.479124] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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13
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Melchior A, Bar I, Rosenwaks S. CHF2Cl and CH3CF2Cl Detection by Coherent Anti-Stokes Raman Scattering and Photoacoustic Raman Spectroscopy. J Phys Chem A 1998. [DOI: 10.1021/jp982311q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Melchior
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - I. Bar
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - S. Rosenwaks
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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14
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Melchior A, Bar I, Rosenwaks S. C–Cl and C–H bond cleavage in 193 nm photodissociation of CH3CF2Cl and CH3CFCl2. J Chem Phys 1997. [DOI: 10.1063/1.475048] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Brownsword RA, Hillenkamp M, Laurent T, Volpp HR, Wolfrum J, Vatsa RK, Yoo HS. H atom formation dynamics in the dissociation of CH3–CF2Cl (HCFC-142b) after UV and VUV laser photoexcitation. J Chem Phys 1997. [DOI: 10.1063/1.474376] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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16
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Arusi-Parpar T, Schmid R, Li RJ, Bar I, Rosenwaks S. Rotational-state dependent selectivity in the bond fission of C2HD (5ν1). Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00163-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Brownsword RA, Hillenkamp M, Laurent T, Vatsa RK, Volpp HR, Wolfrum J. Photodissociation Dynamics of CHF2Cl after Photoexcitation at the Lyman-α Wavelength (121.6 nm). J Phys Chem A 1997. [DOI: 10.1021/jp9623305] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Richard A. Brownsword
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Matthias Hillenkamp
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Thomas Laurent
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Rajesh K. Vatsa
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Hans-Robert Volpp
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Jürgen Wolfrum
- Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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