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All results from a given calculation for SO2 (Sulfur dioxide)

using model chemistry: mPW1PW91/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/CEP-121G
 hartrees
Energy at 0K-41.905241
Energy at 298.15K-41.905972
HF Energy-41.905241
Nuclear repulsion energy30.821187
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 mPW1PW91/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 910 865 6.51      
2 A1 388 369 30.04      
3 B2 994 944 93.89      

Unscaled Zero Point Vibrational Energy (zpe) 1146.0 cm-1
Scaled (by 0.9499) Zero Point Vibrational Energy (zpe) 1088.6 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 mPW1PW91/CEP-121G
ABC
1.33542 0.29386 0.24086

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.444
O2 0.000 1.339 -0.444
O3 0.000 -1.339 -0.444

Atom - Atom Distances (Å)
  S1 O2 O3
S11.60711.6071
O21.60712.6782
O31.60712.6782

picture of Sulfur dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 S1 O3 112.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.836      
2 O -0.418      
3 O -0.418      


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 2.718 2.718
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.604 0.000 0.000
y 0.000 -28.980 0.000
z 0.000 0.000 -22.880
Traceless
 xyz
x 5.326 0.000 0.000
y 0.000 -7.238 0.000
z 0.000 0.000 1.912
Polar
3z2-r23.824
x2-y28.376
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.770 0.000 0.000
y 0.000 5.856 0.000
z 0.000 0.000 2.667


<r2> (average value of r2) Å2
<r2> 40.158
(<r2>)1/2 6.337