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Table 1

CHD2CN rotational and centrifugal distortion parameters.

This work Halonen & Mills (1978) CDMS database*

A/MHz 96 500.2696 (22) 96 500.2674 (373) 96 500.2310 (530)
B/MHz 8320.07278 (10) 8320.0735 (30) 8320.0706 (44)
C/MHz 8164.42785 (10) 8164.4282 (30) 8164.4253 (44)
DJ/kHz 3.103685 (65) 3.0903 (34) 3.10466 (259)
DJK/kHz 126.7475 (21) 126.2140 (808) 126.833 (47)
DK/kHz 1206.37 (24) 1213.57 (319) 1202.06 (159)
d1/kHz –0.047756 (23) –0.04786 (14) –0.048006 (47)
d2/kHz –0.0105627 (84) –0.010712 (15) –0.0105365 (46)
HJ/Hz 0.000472 (11) 0.0 0.0
HJK/Hz 0.72260 (83) 0.0 0.7172 (188)
HKJ/Hz 0.774 (21) 60.14 (418) 0.0
HK/Hz 49.9 (67) –1941 (275) 0.0
h1/mHz –0.0615 (65) –0.40 (3) 0.0
h2/mHz 0.0643 (43) 0.26 (1) 0.0637 (64)
LJJK/mHz –0.00472 (11)
LJK/mHz –0.0451 (43)
LKKJ/mHz –0.590 (86)
PKJ/μHz 0.2188 (83)
PKKJ/μHz –8.27 (11)
Freqmaxa/MHz 940 798.15 39 473.20 39 473.20
nbr of transitionsb 1177 50 50
, c 56, 20 53, 4 53, 4
rmsd/kHz 30.6 26.2 21.5
wrmse 0.864 0.649

Notes.

(*)

Revised fit by H. S. P. Müller using the data of Halonen & Mills (1978),

(a)

maximum line frequencies assigned;

(b)

number of transitions included in the fit;

(c)

maximum values of J and Ka (of lower state);

(d)

standard deviation of fit;

(e)

weighted standard deviation of fit.

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