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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-797.190193
Energy at 298.15K-797.192261
HF Energy-797.190193
Nuclear repulsion energy83.620282
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 PBEPBEultrafine/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 2551 2509 18.73      
2 A 877 863 0.29      
3 A 492 484 0.69      
4 A 448 441 18.52      
5 B 2554 2512 28.88      
6 B 878 864 17.14      

Unscaled Zero Point Vibrational Energy (zpe) 3900.0 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 3835.7 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 PBEPBEultrafine/6-31G*
ABC
4.77481 0.22457 0.22449

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.041 -0.054
S2 0.000 -1.041 -0.054
H3 0.986 1.266 0.863
H4 -0.986 -1.266 0.863

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08201.36562.6716
S22.08202.67161.3656
H31.36562.67163.2101
H42.67161.36563.2101

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 99.493 S2 S1 H3 99.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.132      
2 S -0.132      
3 H 0.132      
4 H 0.132      


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 1.551 1.551
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.920 2.494 0.000
y 2.494 -26.365 0.000
z 0.000 0.000 -27.207
Traceless
 xyz
x -0.134 2.494 0.000
y 2.494 0.699 0.000
z 0.000 0.000 -0.564
Polar
3z2-r2-1.129
x2-y2-0.555
xy2.494
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.621 0.496 0.000
y 0.496 6.752 0.000
z 0.000 0.000 3.552


<r2> (average value of r2) Å2
<r2> 58.523
(<r2>)1/2 7.650