C4H   -   Butadiynl Radical

Molecular constants for the C4H radical
Parameter Ground State Ref. υ=1 State Ref.
B [MHz] 4758.6557(7) 83053 4782.160(2) 87018
D [kHz] 0.8627(10) 0.910(2)
γ [MHz] -38.555(2) -56.97(13)
γD [MHz] 0.127 1.40(9)
b [MHz] -19.088(6)  
c [MHz] 12.435(10)

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