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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-797.630960
Energy at 298.15K-797.633085
HF Energy-797.630960
Nuclear repulsion energy84.711533
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 B1B95/6-31G**
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 2680 2559 7.57      
2 A 924 882 1.32      
3 A 524 501 0.13      
4 A 454 433 19.78      
5 B 2683 2561 11.68      
6 B 921 879 14.81      

Unscaled Zero Point Vibrational Energy (zpe) 4092.7 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 3907.7 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 B1B95/6-31G**
ABC
4.90651 0.23035 0.23023

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

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 0.949 1.237 0.878
H4 -0.949 -1.237 0.878

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.06731.34632.6322
S22.06732.63221.3463
H31.34632.63223.1191
H42.63221.34633.1191

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.706 S2 S1 H3 98.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.098      
2 S -0.098      
3 H 0.098      
4 H 0.098      


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 1.530 1.530
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.685 2.473 0.000
y 2.473 -26.347 0.000
z 0.000 0.000 -26.986
Traceless
 xyz
x -0.018 2.473 0.000
y 2.473 0.488 0.000
z 0.000 0.000 -0.470
Polar
3z2-r2-0.941
x2-y2-0.338
xy2.473
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.578 0.473 0.000
y 0.473 6.486 0.000
z 0.000 0.000 3.507


<r2> (average value of r2) Å2
<r2> 57.350
(<r2>)1/2 7.573