Table 2.
Rotational and distortion constants of CH3CH2NHCHO.
| Molecular | Values | Previous work (a) |
|---|---|---|
| constants | (MHz) | (MHz) |
| A | 9904.836765 (905) | 9904.8373 (6) |
| B | 3521.099684 (209) | 3521.0995 (2) |
| C | 2984.979533 (186) | 2984.9808 (2) |
| ΔJ | 9.376237(349) × 10−03 | 9.3859(53) × 10−03 |
| ΔJK | −6.297555(282) × 10−02 | −6.2957(31) × 10−02 |
| ΔK | 1.659087(181) × 10−01 | 1.6587(15) × 10−01 |
| δJ | 3.223793(197) × 10−03 | 3.2310(14) × 10−03 |
| δK | 1.044634(260) × 10−02 | 1.0116(63) × 10−02 |
| ΦJ | −2.57722(178) × 10−07 | |
| ΦJK | 3.47486(457) × 10−06 | |
| ΦKJ | −1.82342(324) × 10−05 | |
| ΦK | 3.7193(109) × 10−05 | |
| ϕJ | −1.06085(209) × 10−07 | |
| ϕJK | −3.6172(370) × 10−07 | |
| ϕK | 3.8330(475) × 10−06 | |
| LJJK | 2.3014(161) × 10−10 | |
| LKKJ | 4.201(160) × 10−09 | |
| lJ | −5.6239(906) × 10−12 | |
| lK | 1.1741(316) × 10−08 | |
| PJJK | 1.5318(177) × 10−13 | |
| PJK | −8.165(138) × 10−13 | |
| pJ | −4.848(206) × 10−16 | |
| pJJK | −3.732(121) × 10−14 | |
| pJK | 2.0599(248) × 10−12 |
Notes. All constants are in MHz. Numbers in parentheses represent the derived uncertainty (1σ) of the parameter in units of the last digit. The number of independent lines is 616, of which 64 correspond to unresolved doublets.
Previous constants derived by Ohba et al. (2005).
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