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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-797.623864
Energy at 298.15K-797.625972
HF Energy-797.623864
Nuclear repulsion energy84.209551
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 mPW1PW91/6-311G*
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 2625 2506 7.88      
2 A 917 875 0.19      
3 A 507 484 0.20      
4 A 449 429 21.80      
5 B 2627 2507 13.79      
6 B 916 875 11.18      

Unscaled Zero Point Vibrational Energy (zpe) 4020.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 3837.3 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 mPW1PW91/6-311G*
ABC
4.86840 0.22744 0.22741

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.040 -0.055
S2 0.000 -1.040 -0.055
H3 0.950 1.247 0.884
H4 -0.950 -1.247 0.884

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08021.35192.6488
S22.08022.64881.3519
H31.35192.64883.1349
H42.64881.35193.1349

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.803 S2 S1 H3 98.803
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.174      
2 S -0.174      
3 H 0.174      
4 H 0.174      


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 1.625 1.625
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.255 2.589 0.000
y 2.589 -26.954 0.000
z 0.000 0.000 -27.526
Traceless
 xyz
x -0.015 2.589 0.000
y 2.589 0.437 0.000
z 0.000 0.000 -0.421
Polar
3z2-r2-0.843
x2-y2-0.301
xy2.589
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.657 0.341 0.000
y 0.341 6.723 0.000
z 0.000 0.000 3.628


<r2> (average value of r2) Å2
<r2> 58.212
(<r2>)1/2 7.630