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Table A.1.

Molecular constants MHz) for trans-crotononitrile.

Constant Laba+TMC-1 Laba
A 38053.422(36)b 38053.406(43)
B 2297.07475(42) 2297.06890(72)
C 2195.19007(40) 2195.18358(60)
ΔJ 0.286585(143)10−3 0.283422(46)10−3
ΔJK -0.0173276(35) -0.0173321(34)
δJ 0.0297147(196)10−3 0.029727(31)10−3
δJK -1.140(57)10−3 -1.124(64)10−3
ΦJ 0.2913(139)10−9 -
ΦJK -0.039316(217)10−6 -0.039665(194)10−6
ΦKJ 1.8560(101)10−6 1.8400(101)10−6
rmsc 41.8 46.0
Nd 90 75

Values between parentheses correspond to the uncertainties of the parameters in units of the last significant digits.


The standard deviation of the fit in kHz.


Number of lines included in the fit.

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