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

using model chemistry: MP2/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP2/cc-pVDZ
 hartrees
Energy at 0K-622.699923
Energy at 298.15K-622.701877
HF Energy-621.980858
Nuclear repulsion energy178.069367
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 MP2/cc-pVDZ
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' 1004 956 0.00 38.83 0.10 0.18
2 A2" 464 442 29.02 0.00 0.75 0.86
3 E' 1371 1306 146.75 10.02 0.75 0.86
3 E' 1371 1306 146.75 10.02 0.75 0.86
4 E' 488 465 29.57 5.61 0.75 0.86
4 E' 488 465 29.57 5.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2592.1 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 2469.0 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 MP2/cc-pVDZ
ABC
0.32490 0.32490 0.16245

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
O2 0.000 1.471 0.000
O3 1.274 -0.735 0.000
O4 -1.274 -0.735 0.000

Atom - Atom Distances (Å)
  S1 O2 O3 O4
S11.47061.47061.4706
O21.47062.54712.5471
O31.47062.54712.5471
O41.47062.54712.5471

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability