Lille Spectroscopic Database
Code:
Kleiner-Hougen code for methylamine
| Version | 2022.05.nohf |
| Tag | 31803 |
| Molecule - Descriptor | Methylamine, Methanamine (CH3NH2) - vt=1 |
| Isotope | parent |
| Hyperfine | No |
| Lines in DB | 4354 |
| Frequency max. (MHz) | 399807.2469 |
| J max. | 40 |
| Cite these data as | Motiyenko R.A., Ilyushin V.V., Drouin B.J., Yu S., Margulès L. 2014, A&A, 563, A137 https://doi.org/10.1051/0004-6361/201323190 |
| T(K) | Qt | Qrot | Qvib |
|---|---|---|---|
| 300.0 | 31179.430 | 31179.43 | 1.0 |
| 200.0 | 16960.430 | 16960.43 | 1.0 |
| 150.0 | 11011.920 | 11011.92 | 1.0 |
| 50.0 | 2116.560 | 2116.56 | 1.0 |
| 10.0 | 188.940 | 188.94 | 1.0 |
Details:
Each energy level is characterized by the asymmetric-top quantum numbers
J, Ka, and Kc, together with the overall torsion–wagging–rotation symmetry species
Γ, corresponding to an irreducible representation of the permutation–inversion group
G12. When table includes hyperfine levels, the standard quantum number F = J + I is included in the level designation.
The correspondence between the integer symmetry identifier Sym used in the .cat file and the symmetry species
Γ is summarized in the table below.
| Sym | 1 | 2 | 3 | -3 | 4 | -4 |
| Γ | E1 | E2 | A1 | A2 | B1 | B2 |