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All results from a given calculation for SO3 (Sulfur trioxide)

using model chemistry: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-57.653585
Energy at 298.15K-57.654851
Nuclear repulsion energy55.599951
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 B1B95/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 757 725 0.00      
2 A2" 272 261 24.63      
3 E' 961 920 60.05      
3 E' 960 919 59.01      
4 E' 325 311 16.72      
4 E' 323 309 16.55      

Unscaled Zero Point Vibrational Energy (zpe) 1799.1 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 1722.7 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 B1B95/CEP-31G
ABC
0.26728 0.26728 0.13364

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
O2 0.000 1.621 0.000
O3 1.404 -0.811 0.000
O4 -1.404 -0.811 0.000

Atom - Atom Distances (Å)
  S1 O2 O3 O4
S11.62141.62141.6214
O21.62142.80832.8083
O31.62142.80832.8083
O41.62142.80832.8083

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 B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.951      
2 O -0.317      
3 O -0.317      
4 O -0.317      


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 -33.762 0.000 0.000
y 0.000 -33.762 0.000
z 0.000 0.000 -25.979
Traceless
 xyz
x -3.892 0.000 0.000
y 0.000 -3.892 0.000
z 0.000 0.000 7.784
Polar
3z2-r215.567
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 5.832 0.000 0.000
y 0.000 5.840 0.000
z 0.000 0.000 1.713


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000