Singlet methylene removal by halogen-containing organic species

Frances Hayes; Warren D. Lawrance; Warren S. Staker; Keith D. King

doi:10.1016/0009-2614(94)01280-6

Singlet methylene removal by halogen-containing organic species

Frances Hayes, Warren D. Lawrance, Warren S. Staker, Keith D. King

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Abstract

The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylne, ¹CH₂ (ã ¹A₁), with various halogen-containing organic species. The removal rate constants for CH₃Cl, CH₂Cl₂, CHCl₃, CCl₄, CH₃CCl₃, CH₂CHCl, CH₃Br, CH₂CHBr, ch₃F, CF₄, CHF₂CFH₂, C₂F₆ CH₂CHF, C₂F₄, C₆H₅F, p-C₆F₂ and CF₃COOCOCF₃ were measured and found to be (2.72±0.13), (3.36±0.19), (3.48±0.17), (3.35±0.21), (3.61±0.37), (3.21±0.16), (3.03±0.16), (3.54±0.19), (0.549±0.025), (0.169±0.018), (0.639±0.059), (0.212±0.031), (1.73±0.09), (0.509±0.062), (3.36±0.19), (2.59±0.26) and (2.00±0.14) × 10^-10 cm³ molecule^-1s^-1, respectively. Comparisons are drawn between the reactivities of the various halide groups and with their hydrocarbon analogues.

Original language	English
Pages (from-to)	530-535
Number of pages	6
Journal	Chemical Physics Letters
Volume	231
Issue number	4-6
DOIs	https://doi.org/10.1016/0009-2614(94)01280-6
Publication status	Published - 30 Dec 1994

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@article{3a19bee3b76a4514b1585cba642736a9,

title = "Singlet methylene removal by halogen-containing organic species",

abstract = "The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylne, 1CH2 ({\~a} 1A1), with various halogen-containing organic species. The removal rate constants for CH3Cl, CH2Cl2, CHCl3, CCl4, CH3CCl3, CH2CHCl, CH3Br, CH2CHBr, ch3F, CF4, CHF2CFH2, C2F6 CH2CHF, C2F4, C6H5F, p-C6F2 and CF3COOCOCF3 were measured and found to be (2.72±0.13), (3.36±0.19), (3.48±0.17), (3.35±0.21), (3.61±0.37), (3.21±0.16), (3.03±0.16), (3.54±0.19), (0.549±0.025), (0.169±0.018), (0.639±0.059), (0.212±0.031), (1.73±0.09), (0.509±0.062), (3.36±0.19), (2.59±0.26) and (2.00±0.14) × 10-10 cm3 molecule-1s-1, respectively. Comparisons are drawn between the reactivities of the various halide groups and with their hydrocarbon analogues.",

author = "Frances Hayes and Lawrance, {Warren D.} and Staker, {Warren S.} and King, {Keith D.}",

year = "1994",

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doi = "10.1016/0009-2614(94)01280-6",

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T1 - Singlet methylene removal by halogen-containing organic species

AU - Hayes, Frances

AU - Lawrance, Warren D.

AU - Staker, Warren S.

AU - King, Keith D.

PY - 1994/12/30

Y1 - 1994/12/30

N2 - The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylne, 1CH2 (ã 1A1), with various halogen-containing organic species. The removal rate constants for CH3Cl, CH2Cl2, CHCl3, CCl4, CH3CCl3, CH2CHCl, CH3Br, CH2CHBr, ch3F, CF4, CHF2CFH2, C2F6 CH2CHF, C2F4, C6H5F, p-C6F2 and CF3COOCOCF3 were measured and found to be (2.72±0.13), (3.36±0.19), (3.48±0.17), (3.35±0.21), (3.61±0.37), (3.21±0.16), (3.03±0.16), (3.54±0.19), (0.549±0.025), (0.169±0.018), (0.639±0.059), (0.212±0.031), (1.73±0.09), (0.509±0.062), (3.36±0.19), (2.59±0.26) and (2.00±0.14) × 10-10 cm3 molecule-1s-1, respectively. Comparisons are drawn between the reactivities of the various halide groups and with their hydrocarbon analogues.

AB - The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylne, 1CH2 (ã 1A1), with various halogen-containing organic species. The removal rate constants for CH3Cl, CH2Cl2, CHCl3, CCl4, CH3CCl3, CH2CHCl, CH3Br, CH2CHBr, ch3F, CF4, CHF2CFH2, C2F6 CH2CHF, C2F4, C6H5F, p-C6F2 and CF3COOCOCF3 were measured and found to be (2.72±0.13), (3.36±0.19), (3.48±0.17), (3.35±0.21), (3.61±0.37), (3.21±0.16), (3.03±0.16), (3.54±0.19), (0.549±0.025), (0.169±0.018), (0.639±0.059), (0.212±0.031), (1.73±0.09), (0.509±0.062), (3.36±0.19), (2.59±0.26) and (2.00±0.14) × 10-10 cm3 molecule-1s-1, respectively. Comparisons are drawn between the reactivities of the various halide groups and with their hydrocarbon analogues.

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DO - 10.1016/0009-2614(94)01280-6

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -

Singlet methylene removal by halogen-containing organic species

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