return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2S2 (Disulfane)

using model chemistry: HSEh1PBE/cc-pV(D+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HSEh1PBE/cc-pV(D+d)Z
 hartrees
Energy at 0K-797.344993
Energy at 298.15K 
HF Energy-797.344993
Nuclear repulsion energy84.949015
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 HSEh1PBE/cc-pV(D+d)Z
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 2654 2654 2.38      
2 A 895 895 0.08      
3 A 526 526 0.21      
4 A 448 448 16.58      
5 B 2657 2657 8.14      
6 B 899 899 6.76      

Unscaled Zero Point Vibrational Energy (zpe) 4039.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4039.8 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 HSEh1PBE/cc-pV(D+d)Z
ABC
4.83756 0.23235 0.23234

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pV(D+d)Z

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.029 -0.056
S2 0.000 -1.029 -0.056
H3 0.952 1.232 0.888
H4 -0.952 -1.232 0.888

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.05751.35552.6278
S22.05752.62781.3555
H31.35552.62783.1128
H42.62781.35553.1128

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.606 S2 S1 H3 98.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pV(D+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.112      
2 S -0.112      
3 H 0.112      
4 H 0.112      


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 1.386 1.386
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.517 2.237 0.000
y 2.237 -25.790 0.000
z 0.000 0.000 -26.738
Traceless
 xyz
x -0.253 2.237 0.000
y 2.237 0.838 0.000
z 0.000 0.000 -0.584
Polar
3z2-r2-1.169
x2-y2-0.727
xy2.237
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.567 0.532 0.000
y 0.532 6.498 0.000
z 0.000 0.000 3.509


<r2> (average value of r2) Å2
<r2> 56.844
(<r2>)1/2 7.539