Methylamine vibration-rotation-tunneling energy levels in the Ohashi-Hougen formalism

Format:

J K Sym

Details: Each level is characterized by the value of the usual quantum numbers J and K = K_a, and by an overall torsion-wagging-rotation symmetry species Γ corresponding to an irreducible representation of the permutation-inversion group G₁₂. To distinguish between two doubly degenerate levels of E₁ or E₂ symmetry with the same J, K, the notation E₁+1 and E₁-1, or E₂+1 and E₂-1 is used, where +1 and -1 levels correspond to k=K>0 and k=-K<0 respectively. When table includes hyperfine levels, standard F = J+I quantum number is added to the labeling. The correspondence between integer Sym number in .cat file and symmetry species Γ is given in the table →