Competing isomeric product channels in the 193 nm photodissociation of 2-chloropropene and in the unimolecular dissociation of the 2-propenyl radical

Julie A. Mueller; Bradley F. Parsons; Laurie J. Butler; Fei Qi; Osman Sorkhabi; Arthur G. Suits

doi:10.1063/1.1345877

Competing isomeric product channels in the 193 nm photodissociation of 2-chloropropene and in the unimolecular dissociation of the 2-propenyl radical

Julie A. Mueller, Bradley F. Parsons, Laurie J. Butler, Fei Qi, Osman Sorkhabi, Arthur G. Suits

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

41 Scopus citations

Abstract

Translational energy spectroscopy measurements of the unimolecular dissociation of the 2-propenyl radical and photofragmentation channels of 2-chloropropene excited at 193 nm were presented. Product isomers formed were distinguished by tunable vacuum ultraviolet (VUV) photoionization of the products. Change in the branching ratio between the two competing C-H fission channels as a function of the radical's internal energy was measured. Barrier to H+allene formation from high energy C₃H₅ radical was higher than the barrier to H+propyne formation. A technique for forming a particular C_nH_m isomer dispersed by internal energy due to the primary photolysis was also demonstrated.

Original language	English (US)
Pages (from-to)	4505-4521
Number of pages	17
Journal	Journal of Chemical Physics
Volume	114
Issue number	10
DOIs	https://doi.org/10.1063/1.1345877
State	Published - Mar 8 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1063/1.1345877

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Competing isomeric product channels in the 193 nm photodissociation of 2-chloropropene and in the unimolecular dissociation of the 2-propenyl radical. / Mueller, Julie A.; Parsons, Bradley F.; Butler, Laurie J.; Qi, Fei; Sorkhabi, Osman; Suits, Arthur G.

In: Journal of Chemical Physics, Vol. 114, No. 10, 08.03.2001, p. 4505-4521.

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

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AU - Sorkhabi, Osman

AU - Suits, Arthur G.

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AB - Translational energy spectroscopy measurements of the unimolecular dissociation of the 2-propenyl radical and photofragmentation channels of 2-chloropropene excited at 193 nm were presented. Product isomers formed were distinguished by tunable vacuum ultraviolet (VUV) photoionization of the products. Change in the branching ratio between the two competing C-H fission channels as a function of the radical's internal energy was measured. Barrier to H+allene formation from high energy C3H5 radical was higher than the barrier to H+propyne formation. A technique for forming a particular CnHm isomer dispersed by internal energy due to the primary photolysis was also demonstrated.

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Competing isomeric product channels in the 193 nm photodissociation of 2-chloropropene and in the unimolecular dissociation of the 2-propenyl radical

Abstract

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