Fast and exceptionally slow vibrational energy transfer in acetylene and phenylacetylene in solution

W. Zinth; C. Kolmeder; B. Benna; A. Irgens-Defregger; S. F. Fischer; W. Kaiser

doi:10.1063/1.445115

Fast and exceptionally slow vibrational energy transfer in acetylene and phenylacetylene in solution

W. Zinth, C. Kolmeder, B. Benna, A. Irgens-Defregger, S. F. Fischer, W. Kaiser

TUM Emeriti of Excellence

Technical University of Munich

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49 Scopus citations

Abstract

The excitation of the CH-stretching mode (ν₃) of C ₂H₂ in CCl₄ leads to fast population (<2 ps) and very slow depopulation (240 ps) of the symmetric CC-stretching mode (ν₂). The long lifetime of ν₂ is due to the absence of anharmonic interaction to neighboring states (symmetry forbidden). The corresponding CC-stretching mode of C₆H₅-C₂H has a lifetime of 15 ps. The phenyl group relaxes the symmetry restrictions and introduces new decay channels.

Original language	English
Pages (from-to)	3916-3921
Number of pages	6
Journal	Journal of Chemical Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1063/1.445115
State	Published - 1983

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title = "Fast and exceptionally slow vibrational energy transfer in acetylene and phenylacetylene in solution",

abstract = "The excitation of the CH-stretching mode (ν3) of C 2H2 in CCl4 leads to fast population (<2 ps) and very slow depopulation (240 ps) of the symmetric CC-stretching mode (ν2). The long lifetime of ν2 is due to the absence of anharmonic interaction to neighboring states (symmetry forbidden). The corresponding CC-stretching mode of C6H5-C2H has a lifetime of 15 ps. The phenyl group relaxes the symmetry restrictions and introduces new decay channels.",

author = "W. Zinth and C. Kolmeder and B. Benna and A. Irgens-Defregger and Fischer, {S. F.} and W. Kaiser",

year = "1983",

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T1 - Fast and exceptionally slow vibrational energy transfer in acetylene and phenylacetylene in solution

AU - Zinth, W.

AU - Kolmeder, C.

AU - Benna, B.

AU - Irgens-Defregger, A.

AU - Fischer, S. F.

AU - Kaiser, W.

PY - 1983

Y1 - 1983

N2 - The excitation of the CH-stretching mode (ν3) of C 2H2 in CCl4 leads to fast population (<2 ps) and very slow depopulation (240 ps) of the symmetric CC-stretching mode (ν2). The long lifetime of ν2 is due to the absence of anharmonic interaction to neighboring states (symmetry forbidden). The corresponding CC-stretching mode of C6H5-C2H has a lifetime of 15 ps. The phenyl group relaxes the symmetry restrictions and introduces new decay channels.

AB - The excitation of the CH-stretching mode (ν3) of C 2H2 in CCl4 leads to fast population (<2 ps) and very slow depopulation (240 ps) of the symmetric CC-stretching mode (ν2). The long lifetime of ν2 is due to the absence of anharmonic interaction to neighboring states (symmetry forbidden). The corresponding CC-stretching mode of C6H5-C2H has a lifetime of 15 ps. The phenyl group relaxes the symmetry restrictions and introduces new decay channels.

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U2 - 10.1063/1.445115

DO - 10.1063/1.445115

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EP - 3921

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 6

ER -

Fast and exceptionally slow vibrational energy transfer in acetylene and phenylacetylene in solution

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