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 SO3 (Sulfur trioxide)

using model chemistry: wB97X-D/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at wB97X-D/6-311G*
 hartrees
Energy at 0K-623.754079
Energy at 298.15K-623.756103
HF Energy-623.754079
Nuclear repulsion energy182.915308
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 wB97X-D/6-311G*
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' 1080 1080 0.00 31.64 0.09 0.16
2 A2" 484 484 46.50 0.00 0.75 0.86
3 E' 1406 1406 221.45 5.33 0.75 0.86
3 E' 1406 1406 221.50 5.33 0.75 0.86
4 E' 517 517 34.09 4.72 0.75 0.86
4 E' 517 517 34.08 4.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2704.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2704.7 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 wB97X-D/6-311G*
ABC
0.34282 0.34282 0.17141

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
O2 0.000 1.432 0.000
O3 1.240 -0.716 0.000
O4 -1.240 -0.716 0.000

Atom - Atom Distances (Å)
  S1 O2 O3 O4
S11.43161.43161.4316
O21.43162.47962.4796
O31.43162.47962.4796
O41.43162.47962.4796

picture of Sulfur trioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 S1 O3 120.000 O2 S1 O4 120.000
O3 S1 O4 120.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.206      
2 O -0.402      
3 O -0.402      
4 O -0.402      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.960 0.000 0.000
y 0.000 -31.960 0.000
z 0.000 0.000 -24.728
Traceless
 xyz
x -3.616 0.000 0.000
y 0.000 -3.616 0.000
z 0.000 0.000 7.232
Polar
3z2-r214.463
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.958 0.000 0.000
y 0.000 3.959 0.000
z 0.000 0.000 1.894


<r2> (average value of r2) Å2
<r2> 67.644
(<r2>)1/2 8.225