The gas-phase infrared spectra of formyl iodide and carbonyl iodide

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

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 420 KB
• Volume: 246
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)01155-9

✦ Synopsis

Medium resolution infrared spectra (A ~, ffi 1 cm-I ) have been recorded in the wavenumber range 4000-500 cm-' of the products formed in the 254 nm gas-phase photolysis of p.p.m, levels of iodoform (CHI 3) and NO x at a total pressure of 1013 mbar (N 2 + 0 2) and 298 + 2 K in a large volume glass reaction chamber. Formyl iodide (OfCHI) has been identified as a major photooxidation product and its infrared spectrum is reported. Heating of carbon tetraiodide (CI4) in a stream of oxygen results in the formation of carbonyl iodide (O~--CI2) and the first infrared spectrum of this compound is reported. Whereas carbonyl iodide was found to be long-lived in the reactor, formyl iodide was observed to decay rapidly within a matter of minutes with the formation of CO.