SF2

Rotational and Centrifugal Distortion Constants for 32S19F2

Watson's Determinable
Parameters
Value a
[MHz]
Derived Parameters
(assuming planarity conditions)
Value
[MHz]
Ref.
A 26 950.5017(45) A 26 930.486(4)  73035
B 9 212.047 34(229) B 9 212.068(2)
C 6 845.874 52(120) C 6 845.934(1)
τ1 0.128 605(615) τbbcc -0.031 46(8)
τ2 0.008 0540(1504) τccaa 0.041 33(47)
τ3 b 0.3720(17) τaabb 0.118 74(49)
τaaaa -1.221 848(481) τaabb (1) 0. 2179(8)
τbbbb -0.082 3413(730) τaabb (2) 0. 2117(10)
τcccc -0.015 201(78) τaabb (3)
HJ (0.360 44  0.14)  10-6 τabab (1) -0.0495(6)
HJK (0.6525  1.4)  10-6 τabab (2) -0.0445(10)
HKJ (0.1908  0.25)  10-5 τabab (3) -0.0433(14)
HK (0.154 53  0.017)  10-4    
hJ c -(0.3162  0.21)  10-7 Δτ -0.42(14)  10-3
hJK (0.530 51  0.18)  10-5    
hK -(0.8503  0.74)  10-5    
Rms. Dev. 0.078    
No. lines fit 75    

a The uncertainties quoted are one standard deviation as estimated by the least-squares fit. The number of significant figures quoted are necessary to reproduce the calculated transition frequencies within their standard deviation.

b Strictly speaking, τ3 is not a determinable parameter, but is calculated from τ1, τ2, τaaaa, and τbbbb using the planarity conditions.

c Watson uses 2hJ for this parameter.

 

Rotational Constants and Electric Dipole Moment for SF2.

Parameter (0, 0, 0)a $\frac{^{32}{\rm S}^{19}{\rm F}_2}{(1,0,0)^{\rm b}}$  (0, 1, 0) b (0, 0, 1) b $\frac{^{32}{\rm S}^{19}{\rm F}_2}{(1,0,0)^{\rm c}}$ 
A [MHz]   26 967.13(25) 27 264.59(43) 26 780.09(43) 26 071.56(61)
B [MHz]   9167.06(6) 9188.94 (13) 9157.35(8) 9211.42(53)
C [MHz]   6830.64(6) 6819.06(11) 6801.95(8) 6789.00(49)
τaaaa   -1.68(17) -0.945(68) -1.26(27)  
τbbbb   -0.0850 c -0.064(7) -0.0850 c  
τaabb   0.2055 c 0.229(31) 0.2055 c  
τabab   -0.0498 c -0.062(16) -0.0498 c  
b [C · m]
     b [D]
3.50  10-30 
     1.05 d
       

 
a See table above for the ground state values.
 
b Reference [74010].
 
c Fixed at the value determined for the ground state.
 
d Reference [69028].


NIST Physical Measurement Laboratory National Institute of Standards and Technology NIST Physical Measurement Laboratory Back to the triatomic molecule selection page