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Matthaei CT, Mukhopadhyay DP, Röder A, Poisson L, Fischer I. Photodissociation of the trichloromethyl radical: photofragment imaging and femtosecond photoelectron spectroscopy. Phys Chem Chem Phys 2022; 24:928-940. [PMID: 34913455 DOI: 10.1039/d1cp04084g] [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
Halogen-containing radicals play a key role in catalytic reactions leading to stratospheric ozone destruction, thus their photochemistry is of considerable interest. Here we investigate the photodissociation dynamics of the trichloromethyl radical, CCl3 after excitation in the ultraviolet. While the primary processes directly after light absorption are followed by femtosecond-time resolved photoionisation and photoelectron spectroscopy, the reaction products are monitored by photofragment imaging using nanosecond-lasers. The dominant reaction is loss of a Cl atom, associated with a CCl2 fragment. However, the detection of Cl atoms is of limited value, because in the pyrolysis CCl2 is formed as a side product, which in turn dissociates to CCl + Cl. We therefore additionally monitored the molecular fragments CCl2 and CCl by photoionisation at 118.2 nm and disentangled the contributions from various processes. A comparison of the CCl images with control experiments on CCl2 suggest that the dissociation to CCl + Cl2 contributes to the photochemistry of CCl3.
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Affiliation(s)
- Christian T Matthaei
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany.
| | - Deb Pratim Mukhopadhyay
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany.
| | - Anja Röder
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany. .,LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France.
| | - Lionel Poisson
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France. .,Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d*Orsay, 91405, Orsay, France
| | - Ingo Fischer
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany.
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Shan S, Zhang X, Sun E, Xu H, Yan B. Theoretical Study on the Excited Electronic States of CHCl: Application to Photodissociation at 193 nm. J Phys Chem A 2015; 119:10309-15. [DOI: 10.1021/acs.jpca.5b07543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Erping Sun
- College
of Electronic, Communication and Physics, Shandong University of Science and Technology, Qingdao 266590, China
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Sun E, Ren T, Shan S, Liu Q, Xu H, Yan B. Multireference configuration interaction study of dichlorocarbene. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.07.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sun E, Li R, Sun Q, Wei C, Xu H, Yan B. An ab Initio Investigation of Fluorobromo Carbene. J Phys Chem A 2012; 116:10435-40. [DOI: 10.1021/jp307921p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Erping Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Rui Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qixiang Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Changli Wei
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Haifeng Xu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bing Yan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
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Tao C, Richmond CA, Mukarakate C, Kable SH, Bacskay GB, Brown EC, Dawes R, Lolur P, Reid SA. Spectroscopy and dynamics of the predissociated, quasi-linear S2 state of chlorocarbene. J Chem Phys 2012; 137:104307. [DOI: 10.1063/1.4748972] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Chong Tao
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881, USA
| | | | - Calvin Mukarakate
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881, USA
| | - Scott H. Kable
- School of Chemistry, The University of Sydney, NSW 2006, Australia
| | | | - Eric C. Brown
- Department of Chemistry, University of Loyola-Chicago, Chicago, Illinois 60660, USA
| | - Richard Dawes
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Phalgun Lolur
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Scott A. Reid
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881, USA
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Richmond C, Tao C, Mukarakate C, Dawes R, Brown EC, Kable SH, Reid SA. Optical-optical double resonance spectroscopy of the quasi-linear S2 state of CHF and CDF. II. Predissociation and mode-specific dynamics. J Chem Phys 2011; 135:104316. [DOI: 10.1063/1.3633772] [Citation(s) in RCA: 10] [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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Kable SH, Reid SA, Sears TJ. The halocarbenes: model systems for understanding the spectroscopy, dynamics and chemistry of carbenes. INT REV PHYS CHEM 2009. [DOI: 10.1080/01442350903087792] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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