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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: mPW1PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-797.661235
Energy at 298.15K-797.663351
HF Energy-797.661235
Nuclear repulsion energy84.929156
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 mPW1PW91/aug-cc-pVTZ
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 2667 2555 0.18      
2 A 900 862 0.13      
3 A 528 506 0.00      
4 A 440 422 13.29      
5 B 2669 2557 2.49      
6 B 899 862 5.78      

Unscaled Zero Point Vibrational Energy (zpe) 4051.4 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 3881.7 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 mPW1PW91/aug-cc-pVTZ
ABC
4.89091 0.23180 0.23169

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.030 -0.055
S2 0.000 -1.030 -0.055
H3 0.950 1.227 0.880
H4 -0.950 -1.227 0.880

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.06101.34722.6217
S22.06102.62171.3472
H31.34722.62173.1039
H42.62171.34723.1039

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.394 S2 S1 H3 98.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.155      
2 S -0.155      
3 H 0.155      
4 H 0.155      


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 1.158 1.158
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.762 2.057 0.000
y 2.057 -26.021 0.000
z 0.000 0.000 -27.001
Traceless
 xyz
x -0.251 2.057 0.000
y 2.057 0.861 0.000
z 0.000 0.000 -0.610
Polar
3z2-r2-1.219
x2-y2-0.742
xy2.057
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.682 0.361 0.000
y 0.361 8.344 0.000
z 0.000 0.000 5.647


<r2> (average value of r2) Å2
<r2> 57.054
(<r2>)1/2 7.553