Photodissociation spectroscopy and dynamics of the CH2CFO radical
The photodissociation spectroscopy and dynamics resulting from excitation of the B (2)A(")
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| Veröffentlicht in: | The Journal of chemical physics 2004-05, Vol.120 (18), p.8494-8504 |
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| Sprache: | eng |
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| container_end_page | 8504 |
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| container_issue | 18 |
| container_start_page | 8494 |
| container_title | The Journal of chemical physics |
| container_volume | 120 |
| creator | Hoops, Alexandra A Gascooke, Jason R Kautzman, Kathryn E Faulhaber, Ann Elise Neumark, Daniel M |
| description | The photodissociation spectroscopy and dynamics resulting from excitation of the B (2)A(") |
| doi_str_mv | 10.1063/1.1691016 |
| format | Article |
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The photofragment yield spectrum reveals vibrationally resolved structure between 29 870 and 38 800 cm(-1), extending approximately 6000 cm(-1) higher in energy than previously reported in a laser-induced fluorescence excitation spectrum. At all photon energies investigated, only the CH(2)F+CO and HCCO+HF fragment channels are observed. Both product channels yield photofragment translational energy distributions that are characteristic of a decay mechanism with a barrier to dissociation. Using the barrier impulsive model, it is shown that fragmentation to CH(2)F+CO products occurs on the ground state potential energy surface with the isomerization barrier between CH(2)CFO and CH(2)FCO governing the observed translational energy distributions.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.1691016</identifier><identifier>PMID: 15267775</identifier><language>eng</language><publisher>United States</publisher><ispartof>The Journal of chemical physics, 2004-05, Vol.120 (18), p.8494-8504</ispartof><rights>(c) 2004 American Institute of Physics.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-a18a6cdab9e0132723d5e32a56b0eef8d3aea0fd96427893daca838a96368a3d3</citedby><cites>FETCH-LOGICAL-c316t-a18a6cdab9e0132723d5e32a56b0eef8d3aea0fd96427893daca838a96368a3d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15267775$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hoops, Alexandra A</creatorcontrib><creatorcontrib>Gascooke, Jason R</creatorcontrib><creatorcontrib>Kautzman, Kathryn E</creatorcontrib><creatorcontrib>Faulhaber, Ann Elise</creatorcontrib><creatorcontrib>Neumark, Daniel M</creatorcontrib><title>Photodissociation spectroscopy and dynamics of the CH2CFO radical</title><title>The Journal of chemical physics</title><addtitle>J Chem Phys</addtitle><description>The photodissociation spectroscopy and dynamics resulting from excitation of the B (2)A(")<--X (2)A(") transition of CH(2)CFO have been examined using fast beam photofragment translational spectroscopy. The photofragment yield spectrum reveals vibrationally resolved structure between 29 870 and 38 800 cm(-1), extending approximately 6000 cm(-1) higher in energy than previously reported in a laser-induced fluorescence excitation spectrum. At all photon energies investigated, only the CH(2)F+CO and HCCO+HF fragment channels are observed. Both product channels yield photofragment translational energy distributions that are characteristic of a decay mechanism with a barrier to dissociation. 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The photofragment yield spectrum reveals vibrationally resolved structure between 29 870 and 38 800 cm(-1), extending approximately 6000 cm(-1) higher in energy than previously reported in a laser-induced fluorescence excitation spectrum. At all photon energies investigated, only the CH(2)F+CO and HCCO+HF fragment channels are observed. Both product channels yield photofragment translational energy distributions that are characteristic of a decay mechanism with a barrier to dissociation. Using the barrier impulsive model, it is shown that fragmentation to CH(2)F+CO products occurs on the ground state potential energy surface with the isomerization barrier between CH(2)CFO and CH(2)FCO governing the observed translational energy distributions.</abstract><cop>United States</cop><pmid>15267775</pmid><doi>10.1063/1.1691016</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0021-9606 |
| ispartof | The Journal of chemical physics, 2004-05, Vol.120 (18), p.8494-8504 |
| issn | 0021-9606 1089-7690 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive |
| title | Photodissociation spectroscopy and dynamics of the CH2CFO radical |
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