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Photochemical Properties of CH2=CH-CFCl-CF2Br (4-bromo-3-chloro-3,4,4-trifluoro-1-butene) and CH3-O-CH-(CF3)2 (methyl 2,2,2-trifluoroethyl-1-trifluoromethyl ether): OH Reaction Rate Constant, UV and IR Absorption Spectra.
Published
Author(s)
Vladimir L. Orkin, Larissa E. Martynova, Michael J. Kurylo III
Abstract
Abstract Rate constants for the reactions of hydroxyl radicals (OH) with methyl 2,2,2-trifluoroethyl-1-trifluoromethyl ether (CH3-O-CH-(CF3)2 and 4-bromo-3-chloro-3,4,4-trifluoro-1-butene (CH2=CH-CFCl-CF2Br) have been measured over the temperature range 230 K to 370 K to give the following Arrhenius expressions: k1 = 7.21×10-14×(T/298)^3.06×exp(+361/T), cm3 molecule-1 s-1 k2 = 6.45×10-13×exp(+424/T), cm3 molecule-1 s-1 Atmospheric lifetimes of compounds were estimated to be 67 days and 4.5 days, respectively. UV absorption spectrum spectra of CH2=CH-CFCl-CF2Br and (CH3-O-CH-(CF3)2 were measured between 164 nm and 260 nm at T = 295 K and IR absorption spectrum of CH3-O-CH-(CF3)2 was measured between 450 cm-1 and 1600 cm-1.
Orkin, V.
, Martynova, L.
and Kurylo, M.
(2017),
Photochemical Properties of CH2=CH-CFCl-CF2Br (4-bromo-3-chloro-3,4,4-trifluoro-1-butene) and CH3-O-CH-(CF3)2 (methyl 2,2,2-trifluoroethyl-1-trifluoromethyl ether): OH Reaction Rate Constant, UV and IR Absorption Spectra., Journal of Physical Chemistry A
(Accessed October 10, 2025)