Open Access
Table 1
Covered rotational transitions of SiC2, SiS, and Si18O.
| Molecule | Transition | Frequency (GHz) | log I (300 K) (nm2 MHz) | Eu (K) | Blending |
|---|---|---|---|---|---|
| SiC2 | 20,2−10,1 | 47.06482 | −1.49 | 3.4 | Unblended |
| 40,4−30,3 | 93.06363 | −3.61 | 11.2 | Unblended | |
| 42,2−32,1 | 95.57938 | −3.72 | 19.2 | Unblended | |
| 50,5−40,4 | 115.38236 | −3.33 | 16.7 | Blended with NCCNH+ | |
| 60,6−50,5 | 137.18078 | −3.11 | 23.3 | Blended with c-HCOOH | |
| 62,4−52,3 | 145.32587 | −3.12 | 31.9 | Unblended | |
| SiS | 1−0 | 18.15488 | −5.02 | 0.9 | Unblended |
| 2−1 | 36.30963 | −4.12 | 2.6 | Unblended | |
| 4−3 | 72.61810 | −3.22 | 8.7 | Unblended | |
| 5−1 | 90.77155 | −2.93 | 13.0 | Unblended | |
| 6−5 | 108.92427 | −2.70 | 18.3 | Unblended | |
| 7−6 | 127.07614 | −2.51 | 24.4 | Unblended | |
| 8−7 | 145.22699 | −2.35 | 31.4 | Unblended | |
| 9−8 | 163.37670 | −2.20 | 39.2 | Unblended | |
| Si18O | 1−0 | 40.35276 | −3.47 | 1.9 | Unblended |
| 2−1 | 80.70493 | −2.57 | 5.8 | Unblended | |
| 4−3 | 161.40488 | −1.69 | 19.3 | Blended with CH3OCHO | |
| 5−4 | 201.75148 | −1.41 | 20.0 | Unblended |
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