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Vacuum ultraviolet laser‐induced fluorescence kinetic study of the reactions of Cl atoms with fluoroalkenes (C x F 2x+1 CHCH 2 , x = 1,2,4, 6, and 8) at low pressures
Author(s) -
Takahashi Kenshi,
Iwasaki Erika,
Nakayama Tomoki,
Matsumi Yutaka,
Wallington Timothy J.
Publication year - 2007
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20244
Subject(s) - chemistry , diluent , torr , analytical chemistry (journal) , detection limit , fluorescence , photodissociation , ultraviolet , kinetics , reaction rate constant , molecule , laser induced fluorescence , photochemistry , nuclear chemistry , chromatography , organic chemistry , physics , quantum mechanics , thermodynamics
Pulsed laser photolysis/vacuum ultraviolet laser‐induced fluorescence techniques were used to measure rate coefficients for Cl atom reactions with a series of fluoroalkenes (C x F 2x+1 CHCH 2 , x = 1,2,4,6,8) in 6–10 Torr of CF 4 diluent at 295 ± 2 K. Rate coefficients (units of 10 −11 cm 3 molecule −1 s −1 ) of 4.49 ± 0.64, 6.58 ± 0.59, 8.91 ± 0.58, 9.27 ± 0.64, and 9.00 ± 0.87 were determined for C x F 2x+1 CHCH 2 with x = 1,2,4,6, and 8, respectively. In 6–10 Torr of CF 4 diluent, the kinetics of the title reactions are at, or near, the high‐pressure limit for x = 4, 6, and 8, approximately 30% below the high‐pressure limit for x = 2, and approximately 50% below the high‐pressure limit for x = 1. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 328–332, 2007