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

using model chemistry: MP4/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at MP4/aug-cc-pVTZ
 hartrees
Energy at 0K-312.060541
Energy at 298.15K 
HF Energy-311.545224
Nuclear repulsion energy66.617730
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 MP4/aug-cc-pVTZ
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 1942 1890        
2 A1 423 412        
3 B2 1173 1142        

Unscaled Zero Point Vibrational Energy (zpe) 1769.1 cm-1
Scaled (by 0.9732) Zero Point Vibrational Energy (zpe) 1721.6 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 MP4/aug-cc-pVTZ
ABC
1.09897 0.28623 0.22709

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.243
O2 0.000 0.692 -0.855
O3 0.000 -0.692 -0.855

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.20962.2096
O22.20961.3849
O32.20961.3849

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 71.736 Na1 O3 O2 71.736
O2 Na1 O3 36.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability