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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
b

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

c

The standard deviation of the fit in kHz.

d

Number of lines included in the fit.

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