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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-797.255653
Energy at 298.15K-797.257777
HF Energy-797.255653
Nuclear repulsion energy84.603345
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/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 2686 2552 12.47      
2 A 927 881 1.05      
3 A 529 502 0.16      
4 A 453 431 20.92      
5 B 2688 2554 19.48      
6 B 927 881 15.56      

Unscaled Zero Point Vibrational Energy (zpe) 4104.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 3900.4 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 PBE1PBE/6-31G*
ABC
4.88758 0.22987 0.22979

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.034 -0.055
S2 0.000 -1.034 -0.055
H3 0.950 1.248 0.881
H4 -0.950 -1.248 0.881

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.06851.35062.6432
S22.06852.64321.3506
H31.35062.64323.1365
H42.64321.35063.1365

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 99.097 S2 S1 H3 99.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.136      
2 S -0.136      
3 H 0.136      
4 H 0.136      


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 1.591 1.591
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.896 2.575 0.000
y 2.575 -26.507 0.000
z 0.000 0.000 -27.184
Traceless
 xyz
x -0.051 2.575 0.000
y 2.575 0.534 0.000
z 0.000 0.000 -0.483
Polar
3z2-r2-0.965
x2-y2-0.390
xy2.575
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.559 0.483 0.000
y 0.483 6.507 0.000
z 0.000 0.000 3.493


<r2> (average value of r2) Å2
<r2> 57.577
(<r2>)1/2 7.588