Photodissociation of C3H5Br and C4H 7Br at 234 nm

Hyun Kook Kim; Dababrata Paul; Kiryong Hong; Hana Cho; Kyoung Seok Lee; Tae Kyu Kim

doi:10.5012/bkcs.2012.33.1.143

Photodissociation of C₃H₅Br and C₄H ₇Br at 234 nm

Hyun Kook Kim, Dababrata Paul, Kiryong Hong, Hana Cho, Kyoung Seok Lee, Tae Kyu Kim

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The photodissociation dynamics of cyclopropyl bromide (C₃H ₅Br) and cyclobutyl bromide (C₄H₇Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonanceenhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(²P _3/2) and Br*(²P_1/2) atoms. The recoil anisotropies for the Br and Br* channels were measured to be β_Br = 0.92 ± 0.03 and β_Br* = 1.52 ± 0.04 for C₃H₅Br and β_Br = 1.10 ± 0.03 and β_Br* = 1.49 ± 0.05 for C ₄H₇Br. The relative quantum yield for Br was found to be Φ_Br = 0.13 ± 0.03 and for C₃H₅Br and C₄H₇Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.

Original language	English
Pages (from-to)	143-148
Number of pages	6
Journal	Bulletin of the Korean Chemical Society
Volume	33
Issue number	1
DOIs	https://doi.org/10.5012/bkcs.2012.33.1.143
Publication status	Published - 2012 Jan 20

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.5012/bkcs.2012.33.1.143

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title = "Photodissociation of C3H5Br and C4H 7Br at 234 nm",

abstract = "The photodissociation dynamics of cyclopropyl bromide (C3H 5Br) and cyclobutyl bromide (C4H7Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonanceenhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P 3/2) and Br*(2P1/2) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C3H5Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C 4H7Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C3H5Br and C4H7Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.",

author = "Kim, {Hyun Kook} and Dababrata Paul and Kiryong Hong and Hana Cho and Lee, {Kyoung Seok} and Kim, {Tae Kyu}",

year = "2012",

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doi = "10.5012/bkcs.2012.33.1.143",

language = "English",

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journal = "Bulletin of the Korean Chemical Society",

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T1 - Photodissociation of C3H5Br and C4H 7Br at 234 nm

AU - Kim, Hyun Kook

AU - Paul, Dababrata

AU - Hong, Kiryong

AU - Cho, Hana

AU - Lee, Kyoung Seok

AU - Kim, Tae Kyu

PY - 2012/1/20

Y1 - 2012/1/20

N2 - The photodissociation dynamics of cyclopropyl bromide (C3H 5Br) and cyclobutyl bromide (C4H7Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonanceenhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P 3/2) and Br*(2P1/2) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C3H5Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C 4H7Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C3H5Br and C4H7Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.

AB - The photodissociation dynamics of cyclopropyl bromide (C3H 5Br) and cyclobutyl bromide (C4H7Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonanceenhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P 3/2) and Br*(2P1/2) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C3H5Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C 4H7Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C3H5Br and C4H7Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.

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JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

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ER -

Photodissociation of C₃H₅Br and C₄H ₇Br at 234 nm

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