Table 1
Relative stabilities, dipole moments, and abundances of detected C2H5NO isomers towards G+0.693.
| Molecule | μa, μba | ΔEb | Tex | vLSR | FWHM | Nd | X |
|---|---|---|---|---|---|---|---|
| (Debye) | (kcal mol−1) | (K) | (km s−1) | (km s−1) | ×1012 (cm−2) | ×10−10 | |
| CH3C(O)NH2 | 1.22, 3.47 | 0.0 | 7.2–7.9 | 68.4–69.0 | 18.9–22.0 | 115±2 | 8.5±1.3 |
| trans-NMF | 3.2, 2.4 | 10.1 | 7.1 ±0.4 | 68.2±0.5 | 19±1 | 43±4 | 3.2±0.6 |
| cis-NMF (total) | 4.3 (4.45), 0.2 (0.45) | 11.4 | – | – | – | 14.5±0.7 | 1.1±0.2 |
| cis-NMF (Ka=0) | – | – | 8.5±0.8 | 68c | 20c | 4.2±0.6 | – |
| cis-NMF (Ka=1) | – | – | 11.0±0.6 | 68c | 20c | 4.1±0.2 | – |
| cis-NMF (Ka=2) | – | – | 11.0±0.5 | 68c | 20c | 2.8±0.1 | – |
| cis-NMF (Ka=3) | – | – | 8.6±0.6 | 68c | 20c | 2.3±0.2 | – |
| cis-NMF (Ka=4) | – | – | 14±3 | 68c | 20c | 0.55±0.12 | – |
| cis-NMF (Ka=5) | – | – | 14c | 68c | 20c | 0.53±0.09 | – |
Notes. a Values for CH3C(O)NH2 are taken from Kojima et al. (1987), while those for trans- and cis-NMF are based on B2PLYPD3/aug-cc-pVTZ calculations performed in this work. Values in parentheses correspond to those reported by Kawashima et al. (2010). b Values are taken from Lattelais et al. (2010), Kawashima et al. (2010), and this work.c Values are fixed in the MADCUBA fit. d 
with an uncertainty of 15% is adopted from Martín et al. (2008).
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