Table 2
Molecular constants of methanimine and its isotopologs.
| Parameter | CH2NH | 13CH2NH | CH NH |
CH2ND | ||||
|
|
||||||||
| A (MHz) | 196 210.87629(49)a | 196 195.4866(44) | 195 737.5201(43) | 157 673.92406(169) | ||||
| B (MHz) | 34 641.699423(87) | 33 747.23050(117) | 33 735.38602(79) | 32 069.00792(41) | ||||
| C (MHz) | 29 351.496787(81) | 28 706.32768(110) | 28 687.85279(65) | 26 563.45064(44) | ||||
| DJ (kHz) | 56.00411(44) | 53.4737(49) | 53.43278(237) | 49.92710(163) | ||||
| DJK (kHz) | 598.6775(54) | 585.589(39) | 580.029(34) | 327.4730(110) | ||||
| DK (kHz) | 6383.483(36) | 6393.40(35) | 6356.61(43) | 4998.306(74) | ||||
| d1 (kHz) | −9.973179(80) | −9.24134(313) | −9.26331(162) | −10.90309(63) | ||||
| d2 (kHz) | −2.007905(34) | −1.83540(104) | −1.83380(52) | −2.069013(219) | ||||
| HJ (Hz) | 0.01736(48) | 0.0208(69) | 0.01895(253) | 0.04504(186) | ||||
| HJK (Hz) | 2.6068(112) | 2.445(77) | 2.370(41) | 1.9751(232) | ||||
| HKJ (Hz) | 6.125(69) | 7.38(74) | 7.69(78) | −32.070(180) | ||||
| HK (Hz) | 877.75(104) | 861.8(90) | 876.6(117) | 779.52(147) | ||||
| h1 (mHz) | 33.067(164) | 26.7(53) | 30.35(200) | 43.08(92) | ||||
| h2 (mHz) | 32.462(61) | 23.9(34) | 25.85(96) | 36.91(60) | ||||
| h3 (mHz) | 9.091(39) | 7.38(190) | 9.11(96) | 10.013(224) | ||||
| LK (mHz) | −163.0(47) | |||||||
| l1 (μHz) | −0.541(97) | |||||||
| l3 (μHz) | −0.472(34) | |||||||
| χaa(N) (MHz) | −0.91523(141) | −0.568(109) | −0.5268(316) | |||||
| χbb(N) (MHz) | −2.66739(126) | −2.881(71) | −3.0186(209) | |||||
| Caa(N) (kHz) | 53.16(71) | 53.2b | 42.8b | |||||
| Cbb(N) (kHz) | 9.351(230) | 9.09b | 8.64b | |||||
| Ccc(N) (kHz) | 1.214(215) | 1.17b | 1.09b | |||||
|
|
||||||||
| # of newly measured lines | 201 | 143 | 136 | 239 | ||||
| # of fitted linesc | 389d | 146e | 139e | 268e | ||||
|
|
||||||||
| rms | 0.869 | 0.908 | 0.750 | 0.619 | ||||
Notes.
Values in parentheses denote one standard deviation and apply to the last digits of the constants.
In addition to the newly observed lines in the present study, available data have been included for the analysis.
Data observed by Johnson & Lovas (1972); Kirchhoff et al. (1973); Krause et al. (1989); Dore et al. (2010); and Dore et al. (2012) are also included in the analysis.
Data observed by Pearson & Lovas (1977) are also included in the analysis.
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