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: CCD/aug-cc-pVQZ

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 CCD/aug-cc-pVQZ
 hartrees
Energy at 0K-150.151475
Energy at 298.15K-150.151473
HF Energy-149.690974
Nuclear repulsion energy28.439333
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 CCD/aug-cc-pVQZ
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 1722 1722 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 861.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 861.1 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 CCD/aug-cc-pVQZ
B
1.48635

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVQZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.595
O2 0.000 0.000 -0.595

Atom - Atom Distances (Å)
  O1 O2
O11.1909
O21.1909

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