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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: LSDA/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 LSDA/cc-pVTZ
 hartrees
Energy at 0K-795.556411
Energy at 298.15K-795.558499
HF Energy-795.556411
Nuclear repulsion energy85.076064
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 LSDA/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 2560 2532 0.37      
2 A 853 844 0.00      
3 A 522 516 0.12      
4 A 444 439 14.76      
5 B 2564 2536 4.07      
6 B 851 841 5.83      

Unscaled Zero Point Vibrational Energy (zpe) 3896.3 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 3853.8 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 LSDA/cc-pVTZ
ABC
4.78809 0.23360 0.23348

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.028 -0.055
S2 0.000 -1.028 -0.055
H3 0.977 1.213 0.873
H4 -0.977 -1.213 0.873

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.05531.36032.6146
S22.05532.61461.3603
H31.36032.61463.1153
H42.61461.36033.1153

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 97.828 S2 S1 H3 97.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.125      
2 S -0.125      
3 H 0.125      
4 H 0.125      


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 1.273 1.273
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.761 2.116 0.000
y 2.116 -26.009 0.000
z 0.000 0.000 -27.036
Traceless
 xyz
x -0.239 2.116 0.000
y 2.116 0.890 0.000
z 0.000 0.000 -0.651
Polar
3z2-r2-1.302
x2-y2-0.753
xy2.116
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.529 0.446 0.000
y 0.446 7.538 0.000
z 0.000 0.000 4.476


<r2> (average value of r2) Å2
<r2> 56.830
(<r2>)1/2 7.539