Table A.1
Spectroscopic information of the selected transitions of methyl acetate detected toward G+0.693, shown in Figure 2.
| Frequency (GHz) | Transitiona | Sgμ2g | log I at 300 K (nm2 MHz) | Eup (K) | Blending |
|---|---|---|---|---|---|
| 32.797604 (2) | 63, 3–62, 4 (E3) | 8.19 | –7.0096 | 12.2 | Unblended |
| 32.840814 (2) | 63, 3–62, 4 (E1) | 8.20 | –7.0081 | 12.2 | Slightly blended: U-line |
| 34.628602 (2) | 43, 1–42, 2 (E3) | 4.70 | –7.1979 | 8.3 | Unblended |
| 34.637085 (4) | 83, 6–82, 7 (E4) | 9.69 | –6.8957 | 16.9 | Slightly blended: U-line |
| 34.715239 (4) | 83, 6–82, 7 (E3) | 9.67 | –6.8947 | 16.9 | Unblended |
| 35.446462 (2) | 51, 5–40, 4 (E4) | 9.56 | –6.8672 | 6.7 | Slightly blended: U-line |
| 35.452045 (2) | 51, 5–40, 4 (E1) | 9.56 | –6.8669 | 6.7 | Unblended |
| 35.454312 (2) | 51, 5–40, 4 (E3) | 9.56 | –6.8667 | 6.7 | Unblended |
| 38.523669 (4) | 93, 7–92, 8 (E1) | 10.81 | –6.7608 | 20.1 | Blended: U line |
| 38.537458 (2) | 60, 6–51, 5 (E3) | 11.85 | –6.7036 | 8.6 | Unblended |
| 38.539998 (2) | 60, 6–51, 5 (E1) | 11.85 | –6.7036 | 8.6 | Unblended |
| 38.543524 (2) | 60, 6–51, 5 (E4) | 11.85 | –6.7036 | 8.6 | Slightly blended: U-line |
| 38.549823 (4) | 93, 7–92, 8 (E3) | 10.80 | –6.7603 | 20.1 | Blended: U-line |
| 40.941899 (2) | 61, 6–50, 5 (E4) | 12.20 | –6.6386 | 8.6 | Slightly blended: U-line |
| 40.945609 (2) | 61, 6–50, 5 (E1) | 12.20 | –6.6385 | 8.6 | Unblended |
| 40.946537 (2) | 61, 6–50, 5 (E3) | 12.20 | –6.6384 | 8.6 | Unblended |
| 41.235605 (2) | 61, 6–50, 5 (E2) | 12.29 | –6.6266 | 7.0 | Unblended |
| 41.237259 (2) | 61, 6–50, 5 (AA) | 12.29 | –6.6265 | 7.0 | Unblended |
| 42.640369 (4) | 64, 3–63, 4 (E4) | 7.13 | –6.8433 | 13.6 | Slightly blended: U-line |
| 46.805363 (2) | 71, 7–60, 6 (E2) | 14.97 | –6.4339 | 9.2 | Unblended |
| 46.805610 (10) | 122,10–121,11 (E3) | 13.55 | –6.5093 | 31.4 | Unblended |
| 46.806655 (2) | 71, 7–60, 6 (AA) | 14.97 | –6.4338 | 9.2 | Unblended |
| 46.811991 (10) | 122,10–121,11 (E4) | 13.55 | –6.5093 | 31.4 | Slightly blended: U-line |
| 46.812678 (10) | 122,10–121,11 (E1) | 13.55 | –6.5091 | 31.4 | Slightly blended: U-line |
| 76.613177 (9) | 120,12–121,11 (E3) | 28.59 | –5.7486 | 26.3 | Slightly blended: NH2CH2CH2OH |
| 76.613332 (9) | 120,12–121,11 (E4) | 28.59 | –5.7486 | 26.3 | Slightly blended: NH2CH2CH2OH |
| 76.613594 (9) | 120,12–121,11 (E1) | 28.59 | –5.7485 | 26.2 | Slightly blended: NH2CH2CH2OH |
| 83.789892 (4) | 54, 1–43, 2 (AA) | 9.26 | –6.1373 | 10.4 | Slightly blended: C2H5OCHO |
| 88.939251 (15) | 140,14–131,13 (E3) | 34.01 | –5.5552 | 34.5 | Blended: t-C2H3CHO |
| 88.939307 (15) | 140,14–131,13 (E4) | 34.01 | –5.5552 | 34.5 | Blended: t-C2H3CHO |
| 88.939623 (15) | 140,14–131,13 (E1) | 34.01 | –5.5551 | 34.5 | Blended: t-C2H3CHO |
| 88.953729 (15) | 141,14–130,13 (E3) | 34.01 | –5.5550 | 34.5 | Unblended |
| 88.953732 (15) | 141,14–130,13 (E4) | 34.01 | –5.5550 | 34.5 | Unblended |
| 88.954100 (15) | 141,14–130,13 (E1) | 34.01 | –5.5550 | 34.5 | Unblended |
| 94.160620 (5) | 74, 4–63, 4 (E1) | 9.13 | –6.0496 | 16.0 | Unblended |
| 94.166317 (5) | 74, 4–63, 4 (E3) | 9.13 | –6.0495 | 16.1 | Unblended |
| 94.313817 (14) | 141,13–132,12 (E3) | 26.70 | –5.6141 | 37.9 | Slightly blended: CH313CH2OH |
| 94.314988 (14) | 141,13–132,12 (E4) | 26.70 | –5.6141 | 37.9 | Slightly blended: CH313CH2OH |
| 94.315443 (14) | 141,13–132,12 (E1) | 26.70 | –5.6141 | 37.9 | Slightly blended: CH313CH2OH |
| 95.078847 (16) | 142,13–131,12 (E2) | 26.65 | –5.6057 | 36.4 | Slightly blended: HCOCH2OH |
| 95.080895 (16) | 142,13–131,12 (AA) | 26.65 | –5.6057 | 36.4 | Unblended |
| 95.095381 (18) | 150,15–141,14 (E3) | 36.71 | –5.4702 | 39.1 | Unblended |
| 95.095417 (18) | 150,15–141,14 (E4) | 36.71 | –5.4702 | 39.1 | Unblended |
| 95.095735 (18) | 150,15–141,14 (E1) | 36.71 | –5.4702 | 39.1 | Unblended |
| 95.102484 (18) | 151,15–140,14 (E3) | 36.71 | –5.4701 | 39.1 | Unblended |
| 95.102496 (18) | 151,15–140,14 (E4) | 36.71 | –5.4702 | 39.1 | Unblended |
| 95.102840 (18) | 151,15–140,14 (E1) | 36.71 | –5.4701 | 39.1 | Unblended |
| 98.823558 (5) | 74, 3–63, 3 (E1) | 9.40 | –5.9965 | 17.0 | Slightly blended: CH3COCH3 |
| 98.826693 (4) | 74, 3–63, 3 (E4) | 9.40 | –5.9965 | 17.0 | Slightly blended: CH3COCH3 |
| 101.249746 (22) | 160,16–151,15 (E3) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
| 101.249772 (22) | 160,16–151,15 (E4) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
| 101.250085 (22) | 160,16–151,15 (E1) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
| 101.253205 (22) | 161,16–150,15 (E3) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
| 101.253219 (22) | 161,16–150,15 (E4) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
| 101.253545 (22) | 161,16–150,15 (E1) | 39.41 | –5.3917 | 43.9 | Slightly blended: C2H5SH |
Notes. (a)The AA, E1, E2 and E3 and E4 labels refer to the different symmetry or torsional substates, arising from the presence of two non-equivalent CH3 internal rotation motions. Numbers in parentheses represent the predicted uncertainty associated to the last digits. We denote as U-line the line blending with a yet unidentified feature, and as “unblended” lines those that are not contaminated by other species, although many transitions belonging to different symmetry substates are partially or fully coalesced (auto-blended).
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