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dc.contributor.authorBahou, Mohammeden_US
dc.contributor.authorLee, Yuan-Pernen_US
dc.date.accessioned2014-12-08T15:48:04Z-
dc.date.available2014-12-08T15:48:04Z-
dc.date.issued2010-10-28en_US
dc.identifier.issn0021-9606en_US
dc.identifier.urihttp://dx.doi.org/10.1063/1.3502105en_US
dc.identifier.urihttp://hdl.handle.net/11536/32050-
dc.description.abstractWe report the infrared absorption spectrum of the methylthio (or thiomethoxy) radical, CH(3)S (X(2)E(3/2)), produced via photodissociation in situ of three precursors CH(3)SH, CH(3)SCH(3), and CH(3)SSCH(3) isolated in solid p-H(2). The common absorption features observed with similar intensity ratios in each experiment are assigned to CH(3)S. The wavenumbers of these features agree satisfactorily with those predicted with a spin-vibronic Hamiltonian accounting for the anharmonic effects and the Jahn-Teller effects to the quartic term [A. V. Marenich and J. E. Boggs, J. Chem. Theory Comput. 1, 1162 (2005)]. In addition to an absorption line at 724.2 cm(-1), corresponding to a transition of 3(1) previously determined to be 727 cm(-1) from fluorescence spectra of gaseous CH(3)S, we identified fundamental transitions 6(1)(a(1)) at 771.1, 6(1)(e) at 1056.6, 5(1)(a(1)) at 1400.0, 4(1)(a(1)) at 2898.4 cm(-1), and several combination and overtone transitions. In contrast, photolysis of CH(3)SSCH(3) isolated in solid Ar produces mainly H(2)CS, CH(3)SH, and CS(2), but no CH(3)S. These results demonstrate the feasibility of using photolysis in situ of precursors isolated in solid p-H(2) to produce free radicals by taking advantage of the diminished cage effect of the matrix. (C) 2010 American Institute of Physics. [doi:10.1063/1.3502105]en_US
dc.language.isoen_USen_US
dc.titleDiminished cage effect in solid p-H(2): Infrared absorption of CH(3)S observed from photolysis in situ of CH(3)SH, CH(3)SCH(3), or CH(3)SSCH(3) isolated in p-H(2) matricesen_US
dc.typeArticleen_US
dc.identifier.doi10.1063/1.3502105en_US
dc.identifier.journalJOURNAL OF CHEMICAL PHYSICSen_US
dc.citation.volume133en_US
dc.citation.issue16en_US
dc.citation.spageen_US
dc.citation.epageen_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
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