Version 2022.06
Tag 47802
Molecule - Descriptor Dimethyl Ether, Methoxymethane (CH3OCH2D) - a-conformer, vt=0
Isotope D
Hyperfine N/A
Lines in DB 23694
Frequency max. (MHz) 1499953.5155
J max. 91
Cite these data as Richard C., Margulès L., Caux E., Kahane C., Ceccarelli C., Guillemin J.-C., Motiyenko R.A., Vastel C., Groner P. 2013, A&A, 552, A117 https://doi.org/10.1051/0004-6361/201220826

T(K) Qrot Qvib
300.0 98011.358 1.0
225.0 63635.248 1.0
150.0 34630.166 1.0
75.0 12247.85 1.0
37.5 4336.772 1.0
18.75 1538.516 1.0
9.375 547.782 1.0
5.0 216.022 1.0
2.275 68.462 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

  • Niide Y., Hayashi M. 2003, J. Mol. Spec., 220, 65–79
  • Blukis U., Kasai P.H., Myers R.J. 1963, J. Chem. Phys., 38, 2753–2760
Dipole moments

  • Blukis U., Kasai P.H., Myers R.J. 1963, J. Chem. Phys., 38, 2753–2760