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The High-Resolution FTIR Spectrum of Jet-Cooled CH3CF2Cl
1Department of Chemistry, Monash University, Wellington Road, Clayton, Victoria, 3168, Australia
Journal of Molecular Spectroscopy
|April 1, 1997
Summary
High-resolution infrared spectra of chlorodifluoroethane (HCFC-142b) were analyzed. Molecular parameters were determined for several vibrational states, providing insights into its atmospheric behavior.
Area of Science:
- Molecular spectroscopy
- Atmospheric chemistry
Background:
- Chlorodifluoroethane (HCFC-142b) is a hydrochlorofluorocarbon with potential atmospheric implications.
- Understanding its spectral properties is crucial for atmospheric monitoring and modeling.
Purpose of the Study:
- To record and analyze the high-resolution infrared spectrum of HCFC-142b.
- To determine precise molecular parameters for various vibrational states.
Main Methods:
- Supersonic jet-Fourier Transform Infrared (FTIR) spectroscopy was employed.
- Rovibrational analyses were performed on several C-type, A-type, and B-type vibrational bands.
Main Results:
- Molecular parameters for vibrational states including nu14, nu15, nu7, nu5, and nu7 + nu11 were obtained.
- A rotational temperature of approximately 50 K was estimated for the jet expansion.
Conclusions:
- The study provides detailed molecular constants for HCFC-142b.
- These findings contribute to a better understanding of HCFC-142b's spectroscopic characteristics and atmospheric presence.