Table A.7
Comparison of rotational transition frequencies for CH3NCO between those reported in Halfen et al. (2015) and in this work.
| J′ |
|
|
J′′ |
|
|
Symm. | m | Halfen et al. | This work | Difference | ||
| (2015) | ||||||||||||
|
|
||||||||||||
| measured | ||||||||||||
| 7 | –1 | 7 | 6 | –1 | 6 | E | 1 | 60 029.044 | 60 029.019 | 0.025 | ||
| 7 | 1 | 6 | 6 | 1 | 5 | A | 0 | 60 160.932 | 60 162.076 | −1.144a | ||
| 7 | 0 | 7 | 6 | 0 | 6 | A | 0 | 60 688.191 | 60 688.210 | -0.019 | ||
| 7 | 0 | 7 | 6 | 0 | 6 | E | 1 | 60 833.422 | 60 834.588 | −1.166a | ||
| 7 | 1 | 7 | 6 | 1 | 6 | A | 0 | 61 260.729 | 61 260.734 | -0.001 | ||
| 8 | –1 | 8 | 7 | –1 | 7 | E | 1 | 68 617.550 | 68 618.612 | −1.062a | ||
| 8 | 1 | 7 | 7 | 1 | 6 | A | 0 | 68 753.890 | 68 755.025 | −1.135a | ||
| 8 | 0 | 8 | 7 | 0 | 7 | A | 0 | 69 353.888 | 69 353.880 | 0.008 | ||
| 8 | 0 | 8 | 7 | 0 | 7 | E | 1 | 69 469.196 | 69 470.354 | −1.154a | ||
| 8 | 1 | 8 | 7 | 1 | 7 | A | 0 | 70 009.179 | 70 010.208 | −1.029a | ||
| 9 | 1 | 8 | 8 | 1 | 7 | E | 1 | 77 107.478b | 77 101.788 | 5.690 | ||
| 9 | –1 | 9 | 8 | –1 | 8 | E | 1 | 77 211.707 | 77 212.768 | −1.061a | ||
| 9 | 1 | 8 | 8 | 1 | 7 | A | 0 | 77 347.355 | 77 347.425 | -0.070 | ||
| 9 | 0 | 9 | 8 | 0 | 8 | A | 0 | 78 017.932 | 78 017.953 | -0.021 | ||
| 9 | 0 | 9 | 8 | 0 | 8 | E | 1 | 78 087.673 | 78 087.660 | 0.013 | ||
| 9 | 1 | 9 | 8 | 1 | 8 | A | 0 | 78 758.868 | 78 758.849 | 0.019 | ||
| 10 | –1 | 10 | 9 | –1 | 9 | E | 1 | 85 811.557 | 85 811.546 | 0.011 | ||
| 10 | 1 | 9 | 9 | 1 | 8 | A | 0 | 85 938.967 | 85 938.962 | 0.005 | ||
| 10 | 0 | 10 | 9 | 0 | 9 | A | 0 | 86 680.195 | 86 680.190 | 0.005 | ||
| 10 | 0 | 10 | 9 | 0 | 9 | E | 1 | 86 686.575 | 86 686.556 | 0.019 | ||
| 10 | 1 | 10 | 9 | 1 | 9 | A | 0 | 87 506.605 | 87 506.607 | -0.002 | ||
| calculated | ||||||||||||
| 8 | 1 | 7 | 7 | 1 | 6 | E | 1 | 68 536.76c | 68 532.241 | 4.519 | ||
| 10 | 1 | 9 | 9 | 1 | 8 | E | 1 | 85 679.63c | 85 672.565 | 7.065 | ||
| 11 | 1 | 10 | 10 | 1 | 9 | E | 1 | 94 253.49c | 94 244.905 | 8.585 | ||
| 12 | 1 | 11 | 11 | 1 | 10 | E | 1 | 102 829.92c | 102 819.142 | 10.778 | ||
Notes.
One of seven lines from Halfen et al. (2015) showing a ≥ 1 MHz frequency shift relative to the present work. Other lines in the same transition sequences measured in Halfen et al. (2015) do not seem to be affected.
This is a bona fide line in our experimental spectrum but our assignment is m = −2, K = 2 with measured frequency of 77 107.514 MHz.
Prediction in Halfen et al. (2015) based on the misassigned 77 107.478 MHz line. There are no lines in our experimental spectrum at these frequencies, and the actual K = + 1, m = 1 lines are at significantly lower frequencies.
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