Methyl Chloride ν5Region Lineshape Parameters and Rotational Constants for the ν2, ν5, and 2ν3Vibrational Bands
| Autor: | Linda R. Brown, Charles Chackerian, Nelly Lacome, G. Tarrago |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Ozone
Materials science Analytical chemistry chemistry.chemical_element Rotational–vibrational spectroscopy Chloride Atomic and Molecular Physics and Optics Atmosphere chemistry.chemical_compound Atmosphere of Earth chemistry polycyclic compounds medicine Chlorine Physical and Theoretical Chemistry Spectroscopy Earth (classical element) medicine.drug Line (formation) |
| Zdroj: | Journal of Molecular Spectroscopy. 191:148-157 |
| ISSN: | 0022-2852 |
| DOI: | 10.1006/jmsp.1998.7591 |
| Popis: | Fourier spectra of methyl chloride have been obtained at ambient laboratory temperature under self-broadening conditions. Five thousand two hundred and sixty rovibrational transitions of the (nu2, nu5, 2nu3)-vibrational-band triad have been assigned, and new ground and excited state rotational constants for CH335Cl and CH327Cl have been determined. The nu5 and nu2 vibrational-band intensities are determined to be, respectively, 42(1.2) and 31.7(0.9) cm-2 atm-1. Self-broadening coefficients of individual rovibrational lines are determined for the nu5 band of CH335Cl and CH337Cl at 296 K. The self-broadening coefficients peak broadly close to the maximum in the Boltzmann rotational population; no specific trends of the broadening coefficients are observed with the rotational quantum number K. With the exception of the RQ(J, 0) branch, the 1260-1650 cm-1 spectral region can be well modeled by the superposition of overlapping Voigt line profiles. To adequately model the densely packed RQ(J, 0) branch, however, we included collisional line mixing with A+ to A- in addition to A- to A- and A+ to A+ |DeltaJ|/= 1, DeltaK = 0 collisional transitions allowed. Copyright 1998 Academic Press. |
| Databáze: | OpenAIRE |
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