High-resolution FTIR spectroscopy of CHClF2 in a supersonic free jet expansion

✍ Scribed by A. Amrein; D. Luckhaus; F. Merkt; M. Quack

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 547 KB
• Volume: 152
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(88)80092-7

✦ Synopsis

The infrared spectrum of CHCIFz (freon 22, chlorodifluoromethane) in the range of the CH stretching fundamental v, and the two CF stretching fundamentals vj and vs has been measured in a supersonic free jet expansion with rotational temperatures of about 50 K and resolutions up to 0.004 cm-'. The first successful rotational analysts for CH3')ClFZ provided band centers and other constants for v, (1108.728 cm-'), for vx (1127.284 cm-'), and for the ground state by combmatlon differences. The peculiar double-peak structure of v, (302 1.6 cm-' with a side maximum near 3024.6 cm-' ) is discussed. The results are also important for a better understanding of the IR laser chemistry of CHClF* and simulations of its IR absorption as an atmospheric trace gas.

') Corrected by a small average correction of 0.0004 cm-'.