Electronic absorption spectra of jet-cooled molecules. The S2 state of styrene

R. J. Hemley; D. G. Leopold; V. Vaida; J. L. Roebber

doi:10.1021/j150602a005

Electronic absorption spectra of jet-cooled molecules. The S₂ state of styrene

R. J. Hemley, D. G. Leopold, V. Vaida, J. L. Roebber

Chemistry (Twin Cities)

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Abstract

The 220-260-nm adsorption system of styrene cooled in a pulsed supersonic expansion exhibits vibrational structure involving 240- and 1600-cm^-1 progressions. A distorted excited state is evidenced by an extended progression in the 240-cm^-1 mode. Several possible assignments for the two modes are discussed, including ethylene double bond torsion for the low-frequency mode. Implications for styrene cis-trans photoisomerization and the importance of the newly developed supersonic jet direct absorption technique are mentioned.

Original language	English (US)
Pages (from-to)	134-135
Number of pages	2
Journal	Journal of physical chemistry
Volume	85
Issue number	2
DOIs	https://doi.org/10.1021/j150602a005
State	Published - 1981

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abstract = "The 220-260-nm adsorption system of styrene cooled in a pulsed supersonic expansion exhibits vibrational structure involving 240- and 1600-cm-1 progressions. A distorted excited state is evidenced by an extended progression in the 240-cm-1 mode. Several possible assignments for the two modes are discussed, including ethylene double bond torsion for the low-frequency mode. Implications for styrene cis-trans photoisomerization and the importance of the newly developed supersonic jet direct absorption technique are mentioned.",

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AU - Hemley, R. J.

AU - Leopold, D. G.

AU - Vaida, V.

AU - Roebber, J. L.

PY - 1981

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AB - The 220-260-nm adsorption system of styrene cooled in a pulsed supersonic expansion exhibits vibrational structure involving 240- and 1600-cm-1 progressions. A distorted excited state is evidenced by an extended progression in the 240-cm-1 mode. Several possible assignments for the two modes are discussed, including ethylene double bond torsion for the low-frequency mode. Implications for styrene cis-trans photoisomerization and the importance of the newly developed supersonic jet direct absorption technique are mentioned.

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Electronic absorption spectra of jet-cooled molecules. The S₂ state of styrene

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