SiF Molecular Constants

SiF

Silicon Monofluoride

Parameter	²⁸Si¹⁹F X ²Π_r	Ref.
A [cm^-1]	161.88 ^a	83026
A_J [MHz]	1.6306(42)
B₀ [MHz]	17 350.2752(63)
D₀ [kHz]	31.88(13)
p₀ + 2q₀ [MHz]	-90.19(17)
q₀ [MHz]	-1.26(29)
a + (b+c)/2 [MHz]	288.26(45)
a - (b+c)/2 [MHz]	336.4(11)
b [MHz]	127.(16)
d [MHz]	359.0(33)
a [MHz]	312.35(60) ^b
c [MHz]	-175.(16) ^b
µ_r [u]	11.314 8100
r₀ [10^-10 m]	1.604 47^c

^a Fixed value from R.W. Martin and A.J. Merer, Can. J. Phys. 51, 634 (1973).
^b Derived value.
^c Calculated as r_o = [505 379.006(51) / µ_r B₀]^1/2 with units as given in table.