Infrared chemiluminescence in the systems F + CH4 and F + CH2F2. The effect of secondary reaction

✍ Scribed by M. Maneshkarimi; H. Heydtmann

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 366 KB
• Volume: 234
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00020-5

✦ Synopsis

HF is produced vibrationally-rotationally excited in the gas phase systems F + CH 4 and F + CH2F 2. The nascent vibrational distributions observed by IR chemiluminescence for the primary hydrogen abstractions are NI:Nz:N 3 = 30 : 58 : 12 and 36 : 45 : 19 respectively, in fair agreement with published work. With fluorine atoms in excess we measured N 1 : N 2 : N 3 = 24 : 67 : 9 and 42 : 39 : 20, respectively. This shows qualitative differences for the inversion Nz/N l comparing the two reactions. The discussion proposes an influence by the secondary processes: F+CH3~HF++CH2 and F + CHF 2 ~ HF + + CF 2.