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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: BLYP/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 BLYP/6-31G*
 hartrees
Energy at 0K-797.527986
Energy at 298.15K-797.530002
HF Energy-797.527986
Nuclear repulsion energy82.497532
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 BLYP/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 2522 2502 24.06      
2 A 865 858 0.19      
3 A 459 455 0.90      
4 A 427 424 16.02      
5 B 2525 2504 33.44      
6 B 867 860 15.23      

Unscaled Zero Point Vibrational Energy (zpe) 3832.2 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 3801.2 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 BLYP/6-31G*
ABC
4.74506 0.21774 0.21769

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.050 -0.054
S2 0.000 -1.050 -0.054
H3 0.979 1.285 0.872
H4 -0.979 -1.285 0.872

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.09921.36782.6953
S22.09922.69531.3678
H31.36782.69533.2300
H42.69531.36783.2300

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 99.897 S2 S1 H3 99.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.113      
2 S -0.113      
3 H 0.113      
4 H 0.113      


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 1.464 1.464
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.006 2.383 0.000
y 2.383 -26.299 0.000
z 0.000 0.000 -27.262
Traceless
 xyz
x -0.226 2.383 0.000
y 2.383 0.836 0.000
z 0.000 0.000 -0.610
Polar
3z2-r2-1.219
x2-y2-0.708
xy2.383
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.627 0.498 0.000
y 0.498 6.950 0.000
z 0.000 0.000 3.562


<r2> (average value of r2) Å2
<r2> 59.763
(<r2>)1/2 7.731