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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-991.184826
Energy at 298.15K-991.185794
Nuclear repulsion energy227.325878
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 778 739 40.62      
2 A 618 587 0.07      
3 A 277 263 0.50      
4 A 186 176 3.46      
5 B 747 709 131.15      
6 B 300 285 11.05      

Unscaled Zero Point Vibrational Energy (zpe) 1452.5 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 1379.3 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
0.37625 0.08935 0.08327

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 -0.392 0.871 -0.399
S2 0.392 -0.871 -0.399
F3 0.392 1.810 0.710
F4 -0.392 -1.810 0.710

Atom - Atom Distances (Å)
  S1 S2 F3 F4
S11.91001.65132.9011
S21.91002.90111.6513
F31.65132.90113.7042
F42.90111.65133.7042

picture of Difluorodisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 F4 108.883 S2 S1 F3 108.883
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 0.305      
2 S 0.305      
3 F -0.305      
4 F -0.305      


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 -1.405 1.405
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.405 -1.658 0.000
y -1.658 -36.854 0.000
z 0.000 0.000 -34.808
Traceless
 xyz
x 1.426 -1.658 0.000
y -1.658 -2.247 0.000
z 0.000 0.000 0.821
Polar
3z2-r21.642
x2-y22.449
xy-1.658
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.097 -0.745 0.000
y -0.745 7.182 0.000
z 0.000 0.000 3.141


<r2> (average value of r2) Å2
<r2> 127.172
(<r2>)1/2 11.277