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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: LSDA/STO-3G

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/STO-3G
 hartrees
Energy at 0K-786.587118
Energy at 298.15K-786.589108
HF Energy-786.587118
Nuclear repulsion energy83.811929
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/STO-3G
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 2858 2560 35.13      
2 A 973 872 6.29      
3 A 613 549 0.00      
4 A 351 314 12.18      
5 B 2862 2563 36.26      
6 B 981 878 9.19      

Unscaled Zero Point Vibrational Energy (zpe) 4319.4 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 3868.0 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/STO-3G
ABC
4.65455 0.22649 0.22598

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.044 -0.055
S2 0.000 -1.044 -0.055
H3 0.990 1.197 0.885
H4 -0.990 -1.197 0.885

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.08861.37372.6241
S22.08862.62411.3737
H31.37372.62413.1063
H42.62411.37373.1063

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 96.368 S2 S1 H3 96.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.008      
2 S -0.008      
3 H 0.008      
4 H 0.008      


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 1.187 1.187
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.785 1.593 0.000
y 1.593 -23.643 0.000
z 0.000 0.000 -23.110
Traceless
 xyz
x 0.592 1.593 0.000
y 1.593 -0.696 0.000
z 0.000 0.000 0.104
Polar
3z2-r20.208
x2-y20.858
xy1.593
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.451 0.613 0.000
y 0.613 3.442 0.000
z 0.000 0.000 1.246


<r2> (average value of r2) Å2
<r2> 55.863
(<r2>)1/2 7.474