Transient Infrared Absorption Spectrum of the ν1 Fundamental of trans-HOCO

✍ Scribed by J.T. Petty; C.B. Moore

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 352 KB
• Volume: 161
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1993.1223

✦ Synopsis

Using IR difference-frequency laser spectroscopy and 193-nm photolysis of acrylic acid, the rotation-vibration spectrum of the (\nu_{1} \mathrm{O}-\mathrm{H}) stretching fundamental of trans- (\mathrm{HOCO}) radical has been recorded and assigned. The assignment of the spectrum is based on the ground state combination differences, the (-0.9 %) argon matrix-gas-phase shift of the band origins, the H/D isotopic shifts of the frequencies, and the chemical reaction rate with (\mathrm{O}{2}). The band center for the (\nu{1}) fundamental is (3635.702 \mathrm{~cm}^{-1}). Sharp perturbations around (N=15) in the (K_{a}=0-3) levels and significant shifts of the (K_{a}=2-5) levels are observed in (v_{1}=1). ic 1993 Academic Press. Inc.