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

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-31.860700
Energy at 298.15K 
HF Energy-31.484634
Nuclear repulsion energy16.601377
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 MP2/CEP-121G*
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 1047 998 0.48 0.00 0.33 0.50
2 A1 395 376 47.77 333905.40 0.33 0.50
3 B2 7857 7486 0.00 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4649.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 4429.8 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 MP2/CEP-121G*
ABC
1.08248 0.30380 0.23722

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.207
O2 0.000 0.698 -0.830
O3 0.000 -0.698 -0.830

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.15292.1529
O22.15291.3954
O32.15291.3954

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 71.090 Na1 O3 O2 71.090
O2 Na1 O3 37.820
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability