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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: BLYP/3-21G*

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/3-21G*
 hartrees
Energy at 0K-793.813612
Energy at 298.15K-793.815631
HF Energy-793.813612
Nuclear repulsion energy83.004373
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/3-21G*
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 2524 2508 17.64      
2 A 874 868 0.22      
3 A 449 446 3.40      
4 A 427 424 12.93      
5 B 2527 2511 25.39      
6 B 882 876 13.76      

Unscaled Zero Point Vibrational Energy (zpe) 3841.5 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 3816.6 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/3-21G*
ABC
4.76283 0.22072 0.22069

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.056 -0.056
S2 0.000 -1.056 -0.056
H3 0.960 1.267 0.894
H4 -0.960 -1.267 0.894

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.11181.36712.6867
S22.11182.68671.3671
H31.36712.68673.1786
H42.68671.36713.1786

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.864 S2 S1 H3 98.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.139      
2 S -0.139      
3 H 0.139      
4 H 0.139      


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 -27.034 2.351 0.000
y 2.351 -26.356 0.000
z 0.000 0.000 -27.272
Traceless
 xyz
x -0.221 2.351 0.000
y 2.351 0.797 0.000
z 0.000 0.000 -0.577
Polar
3z2-r2-1.154
x2-y2-0.679
xy2.351
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.357 0.553 0.000
y 0.553 6.629 0.000
z 0.000 0.000 3.287


<r2> (average value of r2) Å2
<r2> 59.223
(<r2>)1/2 7.696