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All results from a given calculation for FSSF (Difluorodisulfane)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-990.916415
Energy at 298.15K-990.916920
Nuclear repulsion energy211.060718
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 mPW1PW91/3-21G
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 753 719 14.94      
2 A 402 384 0.00      
3 A 188 180 0.02      
4 A 143 137 2.84      
5 B 740 707 69.22      
6 B 220 210 4.95      

Unscaled Zero Point Vibrational Energy (zpe) 1223.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 1168.1 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 mPW1PW91/3-21G
ABC
0.31308 0.07795 0.07394

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.455 1.000 -0.422
S2 0.455 -1.000 -0.422
F3 0.455 1.858 0.751
F4 -0.455 -1.858 0.751

Atom - Atom Distances (Å)
  S1 S2 F3 F4
S12.19791.71453.0896
S22.19793.08961.7145
F31.71453.08963.8257
F43.08961.71453.8257

picture of Difluorodisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 F4 103.624 S2 S1 F3 103.624
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.310      
2 S 0.310      
3 F -0.310      
4 F -0.310      


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 -1.522 1.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.332 -1.946 0.000
y -1.946 -37.597 0.000
z 0.000 0.000 -35.781
Traceless
 xyz
x 1.357 -1.946 0.000
y -1.946 -2.040 0.000
z 0.000 0.000 0.683
Polar
3z2-r21.367
x2-y22.265
xy-1.946
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.162 -1.091 0.000
y -1.091 8.253 0.000
z 0.000 0.000 3.054


<r2> (average value of r2) Å2
<r2> 142.988
(<r2>)1/2 11.958