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 O2 (Oxygen diatomic)

using model chemistry: MP4=FULL/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-150.029996
Energy at 298.15K-150.029987
HF Energy-149.638526
Nuclear repulsion energy27.517201
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/daug-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 Σg 1450 1450 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 725.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 725.0 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 MP4=FULL/daug-cc-pVDZ
B
1.39215

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/daug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.615
O2 0.000 0.000 -0.615

Atom - Atom Distances (Å)
  O1 O2
O11.2305
O21.2305

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