| Version | 2022.02.hfs |
| Tag | 59802 |
| Molecule - Descriptor | N-Methylformamide, Methylformide (CH3NHCHO) - vt=0, 1, 2 |
| Isotope | parent |
| Hyperfine | Yes |
| Lines in DB | 182933 |
| Frequency max. (MHz) | 649986.5493 |
| J max. | 65 |
| Cite these data as | Belloche A., Meshcheryakov A.A., Garrod R.T., Ilyushin V.V., Alekseev E.A., Motiyenko R.A., Margulès L., Müller H.S.P., Menten K.M. 2017, A&A, 601, A49 https://doi.org/10.1051/0004-6361/201629724 |
| T(K) | Qt | Qrot | Qvib |
|---|---|---|---|
| 300.0 | 523315.506 | 253727.5 | 2.06251 |
| 290.0 | 466525.421 | 236925.58 | 1.96908 |
| 280.0 | 415222.673 | 220689.39 | 1.88148 |
| 270.0 | 368907.774 | 205021.66 | 1.79936 |
| 260.0 | 327130.446 | 189924.9 | 1.72242 |
| 250.0 | 289475.471 | 175401.41 | 1.65036 |
| 240.0 | 255569.209 | 161453.26 | 1.58293 |
| 230.0 | 225065.800 | 148082.27 | 1.51987 |
| 220.0 | 197654.704 | 135290.05 | 1.46097 |
| 210.0 | 173053.667 | 123077.89 | 1.40605 |
| 200.0 | 151002.694 | 111446.86 | 1.35493 |
| 190.0 | 131267.033 | 100397.74 | 1.30747 |
| 180.0 | 113633.294 | 89931.063 | 1.26356 |
| 170.0 | 97906.395 | 80047.089 | 1.22311 |
| 160.0 | 83908.818 | 70745.846 | 1.18606 |
| 150.0 | 71478.211 | 62027.136 | 1.15237 |
| 140.0 | 60467.357 | 53890.554 | 1.12204 |
| 130.0 | 50741.562 | 46335.518 | 1.09509 |
| 120.0 | 42177.975 | 39361.282 | 1.07156 |
| 110.0 | 34664.743 | 32966.945 | 1.0515 |
| 100.0 | 28100.670 | 27151.455 | 1.03496 |
| 90.0 | 22394.138 | 21913.573 | 1.02193 |
| 80.0 | 17464.526 | 17251.811 | 1.01233 |
| 70.0 | 13242.251 | 13164.318 | 1.00592 |
| 60.0 | 9670.294 | 9648.6808 | 1.00224 |
| 50.0 | 6705.458 | 6701.5712 | 1.00058 |
| 40.0 | 4318.253 | 4317.9073 | 1.00008 |
| 30.0 | 2488.152 | 2488.1524 | 1.0 |
| 20.0 | 1189.239 | 1189.2394 | 1.0 |
| 10.0 | 365.162 | 365.16247 | 1.0 |
Details: Each level is characterized by the usual asymmetric top quantum numbers
J, Ka, and Kc, and the free rotor quantum number m.
When table includes hyperfine levels, standard F = J+I quantum number is added to the labeling.
The correspondence between
m quantum number in .cat file and the vibrational torsional quantum number vt and symmetry species Γ = A or E
of C3v symmetry point group is given in the table →
| m | vt | Γ |
|---|---|---|
| 0 | 0 | A |
| 1 | 0 | E |
| -3 | 1 | A |
| -2 | 1 | E |
| 3 | 2 | A |
| 4 | 2 | E |
| -6 | 3 | A |
| -5 | 3 | E |
| 6 | 4 | A |
| 7 | 4 | E |
Lille Spectroscopic Database