Version 2022.02.nohf
Tag 59801
Molecule - Descriptor N-Methylformamide, Methylformide (CH3NHCHO) - vt=0, 1, 2
Isotope parent
Hyperfine No
Lines in DB 60885
Frequency max. (MHz) 649986.1109
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) Qrot Qvib
300.0 253727.504 2.06251
290.0 236925.577 1.96908
280.0 220689.393 1.88148
270.0 205021.664 1.79936
260.0 189924.902 1.72242
250.0 175401.409 1.65036
240.0 161453.255 1.58293
230.0 148082.274 1.51987
220.0 135290.045 1.46097
210.0 123077.888 1.40605
200.0 111446.858 1.35493
190.0 100397.741 1.30747
180.0 89931.0628 1.26356
170.0 80047.0892 1.22311
160.0 70745.8464 1.18606
150.0 62027.1356 1.15237
140.0 53890.5542 1.12204
130.0 46335.5184 1.09509
120.0 39361.2816 1.07156
110.0 32966.9453 1.0515
100.0 27151.4553 1.03496
90.0 21913.5731 1.02193
80.0 17251.8114 1.01233
70.0 13164.3182 1.00592
60.0 9648.68076 1.00224
50.0 6701.57116 1.00058
40.0 4317.90734 1.00008
30.0 2488.15239 1.0
20.0 1189.23943 1.0
10.0 365.162471 1.0

Energy levels of an asymmetric top with a single internal rotor of C3v symmetry

Format:
J Ka Kc m

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
Measurements

  • Fantoni A.C., Caminati W., Hartwig H., Stahl W. 2002, J. Mol. Struct., 612, 305–307
  • Kawashima Y., Usami T., Suenram R.D., Golubiatnikov G.Y., Hirota E. 2010, J. Mol. Spec., 263, 11–20
  • Fantoni A.C., Caminati W. 1996, J. Chem. Soc. Faraday Trans., 92, 343–346
Dipole moments

  • Fantoni A.C., Caminati W. 1996, J. Chem. Soc. Faraday Trans., 92, 343–346