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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: B2PLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP/6-31+G**
 hartrees
Energy at 0K-797.253399
Energy at 298.15K-797.255493
HF Energy-797.168781
Nuclear repulsion energy84.048531
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 B2PLYP/6-31+G**
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 2703 2574 6.46      
2 A 917 873 1.19      
3 A 510 486 0.07      
4 A 432 411 20.70      
5 B 2705 2576 9.12      
6 B 912 868 15.94      

Unscaled Zero Point Vibrational Energy (zpe) 4088.5 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 3893.9 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 B2PLYP/6-31+G**
ABC
4.91867 0.22601 0.22591

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

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 0.948 1.245 0.877
H4 -0.948 -1.245 0.877

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08791.34422.6470
S22.08792.64701.3442
H31.34422.64703.1295
H42.64701.34423.1295

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.613 S2 S1 H3 98.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.078      
2 S -0.078      
3 H 0.078      
4 H 0.078      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.413 0.412 0.000
y 0.412 7.014 0.000
z 0.000 0.000 4.376


<r2> (average value of r2) Å2
<r2> 58.432
(<r2>)1/2 7.644