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Table A.1

Spectroscopic information on the unblended or slightly blended transitions of cis-NMF detected towards G+0.693.

Frequency Transitiona log I Eu Blending
(GHz) J′ Ka′$K_a^\prime $ Kc′$K_c^\prime $ J Ka Kc (A/E) (nm2MHz) (K)
33.524476 4 1 4 - 3 1 3 (E) -5.064 3.6 unblended
33.917500 4 0 4 - 3 0 3 (E) -5.016 4.0 trans-NMF
33.921622 4 0 4 - 3 0 3 (A) -5.016 4.0 unblended
33.934793 4 2 3 - 3 2 3 (A) -5.152 3.0 unblended
33.935534 4 3 1 - 3 3 0 (E) -5.399 1.8 unblended
33.937748 4 3 2 - 3 3 1 (A) -5.399 1.9 unblended
33.937780 4 3 1 - 3 3 0 (A) -5.399 1.9 unblended
33.938784 4 2 2 - 3 2 1 (E) -5.152 3.0 unblended
33.940034 4 3 2 - 3 3 1 (E) -5.399 1.6 unblended
33.942841 4 2 3 - 3 2 2 (E) -5.151 2.8 unblended
33.950541 4 2 2 - 3 2 1 (A) -5.151 3.0 unblended
34.336790 4 1 3 - 3 1 2 (E) -5.043 3.8 syn-NH2COCH2OH
34.514804 4 1 3 - 3 1 2 (A) -5.032 3.8 unblended
41.688134 5 1 5 - 4 1 4 (A) -4.763 5.6 unblended
41.803109 5 1 5 - 4 1 4 (E) -4.764 5.6 unblended
42.416372 5 2 4 - 4 2 3 (A) -4.814 5.0 H76γ
42.419774 5 4 2 - 4 4 1 (A) -5.216 2.4 HCCCH2CN
42.419775 5 4 1 - 4 4 0 (A) -5.216 2.4 HCCCH2CN
42.419814 5 4 1 - 4 4 0 (E) -5.215 2.2 HCCCH2CN
42.420734 5 3 2 - 4 3 1 (E) -4.946 3.8 HCCCH2CN
42.423474 5 3 3 - 4 3 2 (A) -4.946 3.9 HCCCH2CN
42.423586 5 3 2 - 4 3 1 (A) -4.946 3.9 HCCCH2CN
42.424596 5 4 2 - 4 4 1 (E) -5.215 2.0 HCCCH2CN
42.426391 5 3 3 - 4 3 2 (E) -4.946 3.6 unblended
42.427326 5 2 3 - 4 2 2 (E) -4.814 5.0 unblended
42.432313 5 2 4 - 4 2 3 (E) -4.814 4.8 unblended
42.447860 5 2 3 - 4 2 2 (A) -4.814 5.0 unblended
43.017211 5 1 4 - 4 1 3 (E) -4.740 5.8 unblended
43.140362 5 1 4 - 4 1 3 (A) -4.733 5.8 unblended
50.021233 6 1 6 - 5 1 5 (A) -4.523 8.0 unblended
76.325738 9 2 8 - 8 2 7 (A) -4.011 17.2 unblended
76.372075 9 3 6 - 8 3 5 (E) -4.054 16.1 unblended
76.375974 9 3 7 - 8 3 6 (A) -4.054 16.1 unblended
76.378422 9 3 6 - 8 3 5 (A) -4.054 16.1 unblended
76.382617 9 3 7 - 8 3 6 (E) -4.053 15.8 unblended
83.326407 10 1 10 - 9 1 9 (A) -3.869 21.6 U-line
83.341379 10 1 10 - 9 1 9 (E) -3.869 21.6 C2H3CN
85.055480 10 2 8 - 9 2 7 (A) -3.873 21.3 unblended
86.194881 10 1 9 - 9 1 8 (E) -3.840 22.4 E-HNCHCN
92.968105 11 0 11 - 10 0 10 (E) -3.732 26.8 aGg′-(CH2OH)2
92.980811 11 0 11 - 10 0 10 (A) -3.732 26.8 aGg′-(CH2OH)2
93.466530 11 2 9 - 10 2 8 (E) -3.754 25.8 unblended
94.803456 11 1 10 - 10 1 9 (E) -3.722 26.9 U-line
101.826220 12 5 8 - 11 5 7 (E) -3.773 25.6 unblended
101.827581 12 4 9 - 11 4 8 (A) -3.717 28.0 unblended
101.827658 12 4 8 - 11 4 7 (E) -3.717 27.8 unblended
101.827678 12 4 8 - 11 4 7 (A) -3.717 28.0 unblended
101.851638 12 3 9 - 11 3 8 (E) -3.674 29.5 trans-NMF
101.853270 12 3 10 - 11 3 9 (A) -3.675 29.6 trans-NMF
101.863947 12 3 9 - 11 3 8 (A) -3.674 29.6 NH2CH2CH2OH
101.866176 12 3 10 - 11 3 9 (E) -3.674 29.3 NH2CH2CH2OH
102.175979 12 2 10 - 11 2 9 (A) -3.642 30.7 unblended
103.405488 12 1 11 - 11 1 10 (E) -3.615 31.9 unblended
103.432992 12 1 11 - 11 1 10 (A) -3.615 31.9 unblended
110.582703 13 2 11 - 12 2 10 (E) -3.546 36.0 unblended

Notes. a The rotational energy levels of each transition are given using the standard notation for asymmetric tops exhibiting internal rotation of a methyl group: J is the quantum number denoting the total angular momentum; Ka and Kc are pseudo-quantum numbers needed for labelling purposes; A/E denotes the A and E torsional sub-levels associated with the methyl internal rotation of cis-NMF.

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