Microwave, Submillimeter-Wave, and High-Resolution FTIR Spectra of AsF3in the ν2and ν4States

✍ Scribed by H. Bürger; J. Demaison; P. Dréan; C. Gerke; L. Halonen; H. Harder; H. Mäder; J. Radtke; H. Ruland

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 643 KB
• Volume: 180
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1996.0227

✦ Synopsis

The n 2 (n 0 Å 337.796 4 cm 01 ) and n 4 bands (n 0 Å 262.994 2 cm 01 ) of AsF 3 have been studied by FTIR spectroscopy with a resolution of ca. 3 1 10 03 cm 01 . Several hot bands of n 2 were identified and analyzed. Rotational transitions with J Å 0 R 1 and 1 R 2 in the £ 2 Å 1 excited state and DJ Å 0, l-type resonance transitions within the n 4 excited state have been measured for 10 £ J £ 38 and 0 £ G Å Ék 0 lÉ £ 6 in the 4.5-26.5 GHz region by FT microwave techniques. Furthermore, millimeter-wave transitions belonging to the £ 2 Å 1 and 2 and £ 4 Å 1 excited states have been studied in the 340-470 GHz region. All available rotational and rovibrational data related to the n 2 , 2n 2 , and n 4 states were appropriately weighted, merged, and fitted, and numerous excited state parameters were determined. While the n 2 and 2n 2 states are unperturbed, the n 4 state is strongly affected by DG Å 0, 3, and 6 interactions. The concept of unitary equivalent reduction of the effective Hamiltonian (H.