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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-21.032107
Energy at 298.15K-21.034286
HF Energy-21.032107
Nuclear repulsion energy16.495908
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/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 2888 2594 12.89      
2 A 994 893 3.58      
3 A 574 515 0.05      
4 A 449 403 23.35      
5 B 2889 2594 17.83      
6 B 998 896 14.71      

Unscaled Zero Point Vibrational Energy (zpe) 4395.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 3947.2 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/CEP-31G*
ABC
4.96108 0.22824 0.22818

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.039 -0.055
S2 0.000 -1.039 -0.055
H3 0.937 1.239 0.880
H4 -0.937 -1.239 0.880

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.07761.33832.6339
S22.07762.63391.3383
H31.33832.63393.1058
H42.63391.33833.1058

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.587 S2 S1 H3 98.587
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.120      
2 S -0.120      
3 H 0.120      
4 H 0.120      


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 1.659 1.659
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.516 2.736 0.000
y 2.736 -25.177 0.000
z 0.000 0.000 -25.709
Traceless
 xyz
x -0.073 2.736 0.000
y 2.736 0.436 0.000
z 0.000 0.000 -0.363
Polar
3z2-r2-0.725
x2-y2-0.340
xy2.736
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.982 0.484 0.000
y 0.484 6.644 0.000
z 0.000 0.000 2.937


<r2> (average value of r2) Å2
<r2> 35.262
(<r2>)1/2 5.938