return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for FSSF (Difluorodisulfane)

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-991.142054
Energy at 298.15K-991.143038
HF Energy-991.142054
Nuclear repulsion energy227.396493
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at wB97X-D/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 787 746 41.35      
2 A 609 577 0.01      
3 A 279 265 0.33      
4 A 188 178 3.66      
5 B 759 719 126.94      
6 B 306 290 11.28      

Unscaled Zero Point Vibrational Energy (zpe) 1463.9 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 1387.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at wB97X-D/3-21G*
ABC
0.37165 0.08993 0.08383

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.406 0.882 -0.389
S2 0.406 -0.882 -0.389
F3 0.406 1.804 0.691
F4 -0.406 -1.804 0.691

Atom - Atom Distances (Å)
  S1 S2 F3 F4
S11.94311.63562.8950
S21.94312.89501.6356
F31.63562.89503.6974
F42.89501.63563.6974

picture of Difluorodisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 F4 107.678 S2 S1 F3 107.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.309      
2 S 0.309      
3 F -0.309      
4 F -0.309      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.445 1.445
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.402 -1.712 0.000
y -1.712 -36.871 0.000
z 0.000 0.000 -34.843
Traceless
 xyz
x 1.456 -1.712 0.000
y -1.712 -2.249 0.000
z 0.000 0.000 0.793
Polar
3z2-r21.587
x2-y22.470
xy-1.712
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.084 -0.725 0.000
y -0.725 7.027 0.000
z 0.000 0.000 3.126


<r2> (average value of r2) Å2
<r2> 126.721
(<r2>)1/2 11.257