The sensitivity of IVR in benzene to bend-stretch potential energy coupling

Da Hong Lu; William L. Hase; Ralph J. Wolf

doi:10.1063/1.451787

The sensitivity of IVR in benzene to bend-stretch potential energy coupling

Da Hong Lu, William L. Hase, Ralph J. Wolf

Chemistry and Biochemistry

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Abstract

Quasiclassical trajectory calculations have been performed to study intramolecular vibrational energy redistribution (IVR) from CH overtone states in benzene. The rate and extent of this redistribution is sensitive to details of the potential energy surface. A particularly important potential energy surface property is attenuation of the HCC bending frequency upon CH stretch excitation. This property gives rise to non-irreversible IVR when the CH stretch is highly excited. An analog to quantum beats is observed in phase averaged quasiclassical trajectories.

Original language	English
Pages (from-to)	4422-4426
Number of pages	5
Journal	The Journal of Chemical Physics
Volume	85
Issue number	8
DOIs	https://doi.org/10.1063/1.451787
State	Published - 1986

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abstract = "Quasiclassical trajectory calculations have been performed to study intramolecular vibrational energy redistribution (IVR) from CH overtone states in benzene. The rate and extent of this redistribution is sensitive to details of the potential energy surface. A particularly important potential energy surface property is attenuation of the HCC bending frequency upon CH stretch excitation. This property gives rise to non-irreversible IVR when the CH stretch is highly excited. An analog to quantum beats is observed in phase averaged quasiclassical trajectories.",

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AB - Quasiclassical trajectory calculations have been performed to study intramolecular vibrational energy redistribution (IVR) from CH overtone states in benzene. The rate and extent of this redistribution is sensitive to details of the potential energy surface. A particularly important potential energy surface property is attenuation of the HCC bending frequency upon CH stretch excitation. This property gives rise to non-irreversible IVR when the CH stretch is highly excited. An analog to quantum beats is observed in phase averaged quasiclassical trajectories.

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The sensitivity of IVR in benzene to bend-stretch potential energy coupling

Abstract

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