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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: wB97X-D/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/CEP-121G
 hartrees
Energy at 0K-21.435150
Energy at 298.15K-21.437088
HF Energy-21.435150
Nuclear repulsion energy15.551467
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 wB97X-D/CEP-121G
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 2555 2555 24.34      
2 A 805 805 0.83      
3 A 472 472 0.01      
4 A 360 360 33.65      
5 B 2555 2555 29.43      
6 B 790 790 2.63      

Unscaled Zero Point Vibrational Energy (zpe) 3767.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3767.7 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 wB97X-D/CEP-121G
ABC
4.56885 0.19876 0.19849

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.115 -0.056
S2 0.000 -1.115 -0.056
H3 0.993 1.300 0.900
H4 -0.993 -1.300 0.900

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.23061.39072.7810
S22.23062.78101.3907
H31.39072.78103.2716
H42.78101.39073.2716

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 97.639 S2 S1 H3 97.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.085      
2 S -0.085      
3 H 0.085      
4 H 0.085      


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 1.935 1.935
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.702 3.109 0.000
y 3.109 -25.786 0.000
z 0.000 0.000 -26.235
Traceless
 xyz
x 0.308 3.109 0.000
y 3.109 0.183 0.000
z 0.000 0.000 -0.491
Polar
3z2-r2-0.983
x2-y20.083
xy3.109
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.697 0.561 0.000
y 0.561 7.940 0.000
z 0.000 0.000 3.561


<r2> (average value of r2) Å2
<r2> 38.117
(<r2>)1/2 6.174