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Table B.1.

Improved rotational and distortion constants for HCCCHCCC.

Constant Theoretical1 Laboratory2 Lab + TMC-13
(MHz)
A 21399.8 21094.10161(25) 21094.10153(52)
B 1664.0 1676.268423(70) 1676.26835(81)
C 1543.9 1550.066623(42) 1550.066695(60)
ΔJ ×103 0.579 0.6414(77) 0.64165(44)
ΔJK -0.0662 -0.075808(14) -0.075820(25)
δJ ×103 0.144 0.16067(50) 0.15976(52)

Jmax 7 15
Ka, max 1 2
Nlines 24 49
σ (kHz) 0.5 1.5
νmax (MHz) 40330 48340
(1)

Notes.Ab initio calculation from Sattelmeyer & Stanton (2000).

(2)

Rotational and distortion constants derived from a fit to the laboratory data of McCarthy & Thaddeus (2002).

(3)

Rotational and distortion constants derived from a merged fit to the laboratory and TMC-1 frequencies.

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