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All results from a given calculation for H2S2 (Disulfane)

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-797.571776
Energy at 298.15K-797.573849
HF Energy-797.571776
Nuclear repulsion energy83.589733
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 B3LYP/6-31G*
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 2634 2529 17.48      
2 A 904 868 0.73      
3 A 495 475 0.20      
4 A 434 417 18.54      
5 B 2636 2531 24.40      
6 B 905 869 14.64      

Unscaled Zero Point Vibrational Energy (zpe) 4003.9 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 3844.9 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 B3LYP/6-31G*
ABC
4.84902 0.22372 0.22366

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.049 -0.055
S2 0.000 -1.049 -0.055
H3 0.953 1.258 0.885
H4 -0.953 -1.258 0.885

Atom - Atom Distances (Å)
  S1 S2 H3 H4
S12.09781.35502.6675
S22.09782.66751.3550
H31.35502.66753.1567
H42.66751.35503.1567

picture of Disulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.894 S2 S1 H3 98.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.119      
2 S -0.119      
3 H 0.119      
4 H 0.119      


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 1.510 1.510
CHELPG 0.000 0.000 1.538 1.538
AIM 0.000 0.000 0.453 0.453
ESP 0.002 -0.001 1.556 1.556


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.954 2.464 0.000
y 2.464 -26.426 0.000
z 0.000 0.000 -27.219
Traceless
 xyz
x -0.131 2.464 0.000
y 2.464 0.660 0.000
z 0.000 0.000 -0.529
Polar
3z2-r2-1.058
x2-y2-0.528
xy2.464
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.570 0.486 0.000
y 0.486 6.706 0.000
z 0.000 0.000 3.505


<r2> (average value of r2) Å2
<r2> 58.634
(<r2>)1/2 7.657