2ν3 Band of 12CF4 and Its Simultaneous Analysis with ν3

✍ Scribed by T. Gabard; A. Nikitin; J.P. Champion; G. Pierre; A.S. Pine

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 847 KB
• Volume: 170
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1083

✦ Synopsis

A nearly Doppler-limited spectrum of the (2 \nu_{3}) band of the ({ }^{12} \mathrm{CF}{4}) molecule between 2536.0 and (2599.8 \mathrm{~cm}^{-1}) was recorded at (T=77 \mathrm{~K}) using difference-frequency laser spectroscopy. The simultaneous analysis of the ground (G.S.), (v{3}=1), and (v_{3}=2) states was performed using an isolated band model to sixth order in the tetrahedral formalism. Fourteen hundred seventy-five transitions were assigned through (J=35) to the (F_{2}) and (E) vibrational components of the (v_{3}=2) level. A total of 1864 transition frequencies were fit simultaneously ( (10002 v_{3}-) G.S. newly assigned transitions together with (575 \nu_{3}) - G.S. and (289 \nu_{3}-\nu_{3}) transitions already reported in the literature). The ground state constants were improved. Interactions with the (v_{3}+2 v_{4}) and (4 v_{4}) bands are proposed to explain some of the discrepancies observed in the (2 v_{3}) band. (c) 1995 Academic Press. Inc.