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Table C.2.

Rotational and distortion constants of c-C9H8.

Constant Laboratory (a) This work
A (MHz) 3775.048(15) 3775.0469(80)
B (MHz) 1580.8656(21) 1580.86511(79)
C (MHz) 1122.2460(18) 1122.24773(51)
ΔJ (kHz) 0.0326(38) 0.03349(97)
ΔJK (kHz) 0.050(11) 0.0517(73)
ΔK (kHz) 0.37(12) 0.329(82)
δJ (kHz) 0.0117(12) 0.01068(51)
δK (kHz) 0.068(19) 0.0775(94)

Number of lines 78 128
σ(kHz) 67 54
Jmax, Kmax 30,13 30,13
νmax (GHz) 39.3 45.99

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


Laboratory frequencies from Li et al. (1979) and Caminati (1993).

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