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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: HF/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 HF/STO-3G
 hartrees
Energy at 0K-787.491040
Energy at 298.15K-787.493130
HF Energy-787.491040
Nuclear repulsion energy85.002235
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 HF/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 3244 2649 20.96      
2 A 1131 924 17.48      
3 A 702 573 0.02      
4 A 343 280 11.61      
5 B 3244 2648 22.30      
6 B 1133 925 22.00      

Unscaled Zero Point Vibrational Energy (zpe) 4898.2 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 3999.4 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 HF/STO-3G
ABC
4.94798 0.23169 0.23125

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.054 -0.053
S2 0.000 -1.054 -0.053
H3 0.973 1.167 0.854
H4 -0.973 -1.167 0.854

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.10871.33562.5893
S22.10872.58931.3356
H31.33562.58933.0388
H42.58931.33563.0388

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 94.827 S2 S1 H3 94.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.035      
2 S 0.035      
3 H -0.035      
4 H -0.035      


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 1.093 1.093
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.089 1.515 0.000
y 1.515 -24.229 0.000
z 0.000 0.000 -23.348
Traceless
 xyz
x 0.700 1.515 0.000
y 1.515 -1.010 0.000
z 0.000 0.000 0.310
Polar
3z2-r20.621
x2-y21.140
xy1.515
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.400 0.673 0.000
y 0.673 3.511 0.000
z 0.000 0.000 1.207


<r2> (average value of r2) Å2
<r2> 55.088
(<r2>)1/2 7.422