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: M06-2X/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-995.856769
Energy at 298.15K-995.857737
HF Energy-995.856769
Nuclear repulsion energy228.455574
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 M06-2X/6-31G*
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 812 769 73.37      
2 A 598 566 0.20      
3 A 275 260 0.18      
4 A 173 164 3.07      
5 B 784 742 173.26      
6 B 315 298 13.09      

Unscaled Zero Point Vibrational Energy (zpe) 1477.7 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 1399.4 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 M06-2X/6-31G*
ABC
0.36227 0.09226 0.08614

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.407 0.878 -0.402
S2 0.407 -0.878 -0.402
F3 0.407 1.751 0.715
F4 -0.407 -1.751 0.715

Atom - Atom Distances (Å)
  S1 S2 F3 F4
S11.93541.63542.8568
S21.93542.85681.6354
F31.63542.85683.5961
F42.85681.63543.5961

picture of Difluorodisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 F4 105.963 S2 S1 F3 105.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.363      
2 S 0.363      
3 F -0.363      
4 F -0.363      


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 -1.495 1.495
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.450 -1.844 0.000
y -1.844 -36.585 0.000
z 0.000 0.000 -34.914
Traceless
 xyz
x 1.300 -1.844 0.000
y -1.844 -1.903 0.000
z 0.000 0.000 0.603
Polar
3z2-r21.206
x2-y22.135
xy-1.844
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.723 -0.821 0.000
y -0.821 7.424 0.000
z 0.000 0.000 3.653


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000