FTIR spectroscopic observation of gaseous HOI

✍ Scribed by I. Barnes; K.H. Becker; J. Starcke

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 388 KB
• Volume: 196
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85997-o

✦ Synopsis

Medium resolved infrared spectra ( Av = 1 cm-' ) have been recorded in the wave-number range 4000-600 cm-' of the products formed in the 254 nm photolysis of 12-H202, CHJ-H202 and CH212-H202 gas mixtures at a total pressure of 1013 mbar of N2 at 298 + 2 K in a 1080 P glass reaction chamber. In all of the reaction systems studied absorption features were observed with band centers at approximately 3620 and 1070 cm-' which have been assigned to the v, OH stretching and u2 bending modes ofgaseous hypoiodous acid (HOI), respectively. This represents the first report of the gaseous IR spectrum of HOI. The investigations provide the first conclusive evidence that the reaction of OH with Iz leads to the formation of HOI. The lifetime of HOI in the chamber was only l-2 min and was too short to allow any studies on the chemistry of HOI with the applied experimental technique.