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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-150.060624
Energy at 298.15K 
HF Energy-149.794400
Nuclear repulsion energy26.412260
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/LANL2DZ
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 837 806 0.92 0.00 0.33 0.50
2 A1 412 397 52.97 89978.15 0.33 0.50
3 B2 625 602 2335.69 1679.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 937.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 902.5 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/LANL2DZ
ABC
0.93919 0.28716 0.21992

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.241
O2 0.000 0.749 -0.853
O3 0.000 -0.749 -0.853

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.22482.2248
O22.22481.4981
O32.22481.4981

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 70.325 Na1 O3 O2 70.325
O2 Na1 O3 39.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability