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All results from a given calculation for NaO2 (Sodium superoxide)

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-311.926344
Energy at 298.15K 
HF Energy-311.486443
Nuclear repulsion energy68.094084
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/6-31G(2df,p)
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 1289 1221 36.11      
2 A1 463 439 88.86      
3 B2 452 428 163.19      

Unscaled Zero Point Vibrational Energy (zpe) 1102.1 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 1044.0 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 CCD/6-31G(2df,p)
ABC
1.17146 0.29478 0.23552

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.225
O2 0.000 0.671 -0.842
O3 0.000 -0.671 -0.842

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.17372.1737
O22.17371.3414
O32.17371.3414

picture of Sodium superoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na1 O2 O3 72.028 Na1 O3 O2 72.028
O2 Na1 O3 35.944
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability