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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-309.923359
Energy at 298.15K 
HF Energy-309.691936
Nuclear repulsion energy67.853068
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 CID/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 A1 1186 1104 2.83      
2 A1 486 452 58.28      
3 B2 556 518 422.79      

Unscaled Zero Point Vibrational Energy (zpe) 1114.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 1036.8 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 CID/3-21G*
ABC
1.02171 0.32236 0.24505

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.172
O2 0.000 0.718 -0.806
O3 0.000 -0.718 -0.806

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.10362.1036
O22.10361.4363
O32.10361.4363

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 70.038 Na1 O3 O2 70.038
O2 Na1 O3 39.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability