SF Molecular Constants

SF

Sulfur Monofluoride

Parameter	³²S¹⁹F X ²Π_i	Ref.
A [cm^-1]	-387.(25)^a	82002
A_J [MHz]	0.7083(18)
B₀ [MHz]	16 576.9140(46)
D₀ [kHz]	29.24(10)
p_υ [MHz]	3.409(44)
a + (b+c)/2 [MHz]	428.51(12)
a - (b+c)/2 [MHz]	535.67(44)
b [MHz]	210.(15)
d [MHz]	589.76(92)
a [MHz]	482.09(24) ^b
c [MHz]	-317.(15)
µ_r [u]	11.917 0619
r₀ [10^-10 m]	1.599 46 ^c

^a Value fixed. From ref. [69046].
^b Derived constant.
^c Calculated as r₀ = [505 379.006(51) / µ_r B₀]^1/2 with units as given in table.

NIST Physical Measurement Laboratory