Isomer-specific spectroscopy and conformational isomerization energetics of o-, m-, and p-ethynylstyrenes

Talitha M. Selby; Jasper R. Clarkson; Diane Mitchell; James A.J. Fitzpatrick; Hsiupu D. Lee; David W. Pratt; Timothy S. Zwier

doi:10.1021/jp050858g

Isomer-specific spectroscopy and conformational isomerization energetics of o-, m-, and p-ethynylstyrenes

Talitha M. Selby, Jasper R. Clarkson, Diane Mitchell, James A.J. Fitzpatrick, Hsiupu D. Lee, David W. Pratt, Timothy S. Zwier

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Abstract

The infrared and ultraviolet spectroscopy of o-, m-, and p-ethynylstyrene isomers were studied using a combination of methods, including UV hole burning spectroscopy (UVHB) and resonant ion-dip infrared spectroscopy (RIDIRS). In all the three isomers, the acetylenic C-H stretch fundamental was split by Fermi resonance. In all of them, the acetylenic C-H stretch fundamental was unshifted from the ground state. The first observed and last observed transistions in the SEP-PT spectrum were used to place lower and upper bounds on the barrier to cis to trans isomerization in m-ethynylstyrene of 990-1070 cm ^-1.

Original language	English
Pages (from-to)	4484-4496
Number of pages	13
Journal	Journal of Physical Chemistry A
Volume	109
Issue number	20
DOIs	https://doi.org/10.1021/jp050858g
State	Published - May 26 2005

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title = "Isomer-specific spectroscopy and conformational isomerization energetics of o-, m-, and p-ethynylstyrenes",

abstract = "The infrared and ultraviolet spectroscopy of o-, m-, and p-ethynylstyrene isomers were studied using a combination of methods, including UV hole burning spectroscopy (UVHB) and resonant ion-dip infrared spectroscopy (RIDIRS). In all the three isomers, the acetylenic C-H stretch fundamental was split by Fermi resonance. In all of them, the acetylenic C-H stretch fundamental was unshifted from the ground state. The first observed and last observed transistions in the SEP-PT spectrum were used to place lower and upper bounds on the barrier to cis to trans isomerization in m-ethynylstyrene of 990-1070 cm -1.",

author = "Selby, {Talitha M.} and Clarkson, {Jasper R.} and Diane Mitchell and Fitzpatrick, {James A.J.} and Lee, {Hsiupu D.} and Pratt, {David W.} and Zwier, {Timothy S.}",

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T1 - Isomer-specific spectroscopy and conformational isomerization energetics of o-, m-, and p-ethynylstyrenes

AU - Selby, Talitha M.

AU - Clarkson, Jasper R.

AU - Mitchell, Diane

AU - Fitzpatrick, James A.J.

AU - Lee, Hsiupu D.

AU - Pratt, David W.

AU - Zwier, Timothy S.

PY - 2005/5/26

Y1 - 2005/5/26

N2 - The infrared and ultraviolet spectroscopy of o-, m-, and p-ethynylstyrene isomers were studied using a combination of methods, including UV hole burning spectroscopy (UVHB) and resonant ion-dip infrared spectroscopy (RIDIRS). In all the three isomers, the acetylenic C-H stretch fundamental was split by Fermi resonance. In all of them, the acetylenic C-H stretch fundamental was unshifted from the ground state. The first observed and last observed transistions in the SEP-PT spectrum were used to place lower and upper bounds on the barrier to cis to trans isomerization in m-ethynylstyrene of 990-1070 cm -1.

AB - The infrared and ultraviolet spectroscopy of o-, m-, and p-ethynylstyrene isomers were studied using a combination of methods, including UV hole burning spectroscopy (UVHB) and resonant ion-dip infrared spectroscopy (RIDIRS). In all the three isomers, the acetylenic C-H stretch fundamental was split by Fermi resonance. In all of them, the acetylenic C-H stretch fundamental was unshifted from the ground state. The first observed and last observed transistions in the SEP-PT spectrum were used to place lower and upper bounds on the barrier to cis to trans isomerization in m-ethynylstyrene of 990-1070 cm -1.

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JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

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ER -

Isomer-specific spectroscopy and conformational isomerization energetics of o-, m-, and p-ethynylstyrenes

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