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All results from a given calculation for O2 (Oxygen diatomic)

using model chemistry: MP4=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
Energy calculated at MP4=FULL/3-21G*
 hartrees
Energy at 0K-149.033338
Energy at 298.15K-149.033305
HF Energy-148.751331
Nuclear repulsion energy24.864878
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 MP4=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1123 1123        

Unscaled Zero Point Vibrational Energy (zpe) 561.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 561.4 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 MP4=FULL/3-21G*
B
1.13670

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.681
O2 0.000 0.000 -0.681

Atom - Atom Distances (Å)
  O1 O2
O11.3618
O21.3618

picture of Oxygen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability