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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-797.591969
Energy at 298.15K-797.594054
HF Energy-797.591969
Nuclear repulsion energy84.232682
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 B3LYP/6-31G(2df,p)
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 2629 2537 2.20      
2 A 887 856 0.23      
3 A 506 489 0.08      
4 A 436 421 14.38      
5 B 2632 2540 4.83      
6 B 890 859 8.87      

Unscaled Zero Point Vibrational Energy (zpe) 3990.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 3851.0 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 B3LYP/6-31G(2df,p)
ABC
4.86986 0.22754 0.22748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

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 1.241 0.884
H4 -0.950 -1.241 0.884

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08031.35072.6433
S22.08032.64331.3507
H31.35072.64333.1257
H42.64331.35073.1257

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.547 S2 S1 H3 98.547
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.175      
2 S -0.175      
3 H 0.175      
4 H 0.175      


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 1.271 1.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.624 2.183 0.000
y 2.183 -25.904 0.000
z 0.000 0.000 -26.846
Traceless
 xyz
x -0.249 2.183 0.000
y 2.183 0.831 0.000
z 0.000 0.000 -0.581
Polar
3z2-r2-1.163
x2-y2-0.720
xy2.183
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.272 0.402 0.000
y 0.402 7.168 0.000
z 0.000 0.000 4.226


<r2> (average value of r2) Å2
<r2> 57.691
(<r2>)1/2 7.595