Open Access
Table C.1.
Spectroscopic parameters of CH2C=C(CN)2.
| Parameter / Unit | This work | Tan et al. (1978) |
|---|---|---|
| A / MHz | 6579.26967(89) a | 6579.266(5) |
| B / MHz | 2882.033545(304) | 2882.032(2) |
| C / MHz | 2000.92392(32) | 2000.925(2) |
| ΔJ / kHz | 1.2593(63) | 1.2506(63) |
| ΔJK / kHz | -8.584(69) | -8.5636(252) |
| ΔK / kHz | 32.315(136) | 32.2825(490) |
| δJ / kHz | 0.55633(226) | 0.5568(21) |
| δK / kHz | 1.364(131) | 1.3311(335) |
| χaa / MHz | -2.64535(226) | - |
| χbb / MHz | 0.55546(175) | - |
| Nlines | 129 b | 59 c |
| σ / kHz | 2.9 | 45 |
a The uncertainties (in parentheses) are in units of the last significant digits. b Number of hyperfine components. c Number of pure rotational transitions.
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