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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: PBE1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBE1PBE/STO-3G
 hartrees
Energy at 0K-788.473500
Energy at 298.15K-788.475519
HF Energy-788.473500
Nuclear repulsion energy83.934384
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 PBE1PBE/STO-3G
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 2961 2612 33.09      
2 A 1020 900 9.27      
3 A 632 557 0.01      
4 A 348 307 11.02      
5 B 2963 2613 33.85      
6 B 1026 905 12.36      

Unscaled Zero Point Vibrational Energy (zpe) 4474.6 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 3947.0 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 PBE1PBE/STO-3G
ABC
4.73097 0.22661 0.22613

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.044 -0.055
S2 0.000 -1.044 -0.055
H3 0.981 1.195 0.879
H4 -0.981 -1.195 0.879

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08861.36242.6167
S22.08862.61671.3624
H31.36242.61673.0917
H42.61671.36243.0917

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 96.344 S2 S1 H3 96.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.011      
2 S 0.011      
3 H -0.011      
4 H -0.011      


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 1.109 1.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.922 1.508 0.000
y 1.508 -23.816 0.000
z 0.000 0.000 -23.215
Traceless
 xyz
x 0.594 1.508 0.000
y 1.508 -0.748 0.000
z 0.000 0.000 0.154
Polar
3z2-r20.308
x2-y20.894
xy1.508
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.435 0.615 0.000
y 0.615 3.453 0.000
z 0.000 0.000 1.238


<r2> (average value of r2) Å2
<r2> 55.880
(<r2>)1/2 7.475