Table 2.
Determinable Watson’s rotational constants, inertia moments, and inertial defect for SiC2, its isotopologues, and Si2C.
| Constant | Units | 28SiC2 | 29SiC2 | 30SiC2 | 28Si13CC | Si2C |
|---|---|---|---|---|---|---|
| A0 | MHz | 52474.05582(763) | 52472.603(284) | 52470.673(307) | 50455.664(151) | 64074.36218(404) |
| B0 | MHz | 13158.53135(100) | 12948.57623(550) | 12753.05847(562) | 12874.10105(383) | 4394.677135(715) |
| C0 | MHz | 10444.889451(946) | 10312.03486(617) | 10187.54514(623) | 10183.99385(366) | 4101.295962(997) |
| Ia | amu Å2 | 9.63102727(140) | 9.6312937(522) | 9.6316481(564) | 10.0162998(301) | 7.88738344(498) |
| Ib | amu Å2 | 38.40695054(292) | 39.0297013(165) | 39.6280675(174) | 39.2554836(117) | 114.9979958(187) |
| Ic | amu Å2 | 48.38529555(438) | 49.0086651(293) | 49.6075409(303) | 49.6248397(178) | 123.2242363(299) |
| Δ | amu Å2 | 0.34731772(871) | 0.3476700(982) | 0.347825(104) | 0.3530562(597) | 0.3388570(491) |
Notes. Numbers in parentheses represent the derived uncertainty (1σ) of the parameter in units of the last digit. Ia, Ib, Ic are the principal inertia moments of the molecule. Δ is the inertial defect (Δ = Ib − Ic − Ia).
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