Vibrational Spectra of cis and trans Oxalyl Fluoride and Their Site-Selective IR-Induced Rotamerization in an Argon Matrix
✍ Scribed by Stefan Sander; Helge Willner; Leonid Khriachtchev; Mika Pettersson; Markku Räsänen; Eduardo L. Varetti
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 103 KB
- Volume
- 203
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
A cis/trans equilibrium mixture of matrix-isolated oxalyl fluoride was irradiated with a narrowband tunable IR source in the 2 (CO) spectral region (3680 -3710 cm Ϫ1 ). Rotamerization of cis into trans and vice versa was achieved (even site selective) by selective IR pumping. The experiments strongly aided a detailed IR analysis of both rotamers. For a complete vibrational analysis, low-temperature Raman measurements were also performed. With the exception of the torsional vibration of cis oxalyl fluoride, all the fundamentals of both rotamers have been observed.