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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-793.271718
Energy at 298.15K-793.273568
HF Energy-793.230652
Nuclear repulsion energy77.424674
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 B2PLYP/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 2463 2463 19.59      
2 A 822 822 0.72      
3 A 421 421 0.08      
4 A 320 320 31.46      
5 B 2464 2464 24.42      
6 B 804 804 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 3646.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3646.5 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 B2PLYP/3-21G
ABC
4.63469 0.18791 0.18732

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.150 -0.054
S2 0.000 -1.150 -0.054
H3 1.006 1.287 0.872
H4 -1.006 -1.287 0.872

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.30071.37432.7949
S22.30072.79491.3743
H31.37432.79493.2677
H42.79491.37433.2677

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 95.715 S2 S1 H3 95.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.100      
2 S -0.100      
3 H 0.100      
4 H 0.100      


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 1.801 1.801
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.650 2.900 0.000
y 2.900 -27.502 0.000
z 0.000 0.000 -28.436
Traceless
 xyz
x 0.319 2.900 0.000
y 2.900 0.541 0.000
z 0.000 0.000 -0.860
Polar
3z2-r2-1.720
x2-y2-0.148
xy2.900
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.201 0.600 0.000
y 0.600 7.908 0.000
z 0.000 0.000 2.880


<r2> (average value of r2) Å2
<r2> 66.700
(<r2>)1/2 8.167