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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-311.913400
Energy at 298.15K 
HF Energy-311.515845
Nuclear repulsion energy67.804174
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 QCISD/6-311G*
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 1203 1152 18.34      
2 A1 447 428 70.19      
3 B2 301 288 14.83      

Unscaled Zero Point Vibrational Energy (zpe) 975.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 934.1 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 QCISD/6-311G*
ABC
1.15286 0.29393 0.23422

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.227
O2 0.000 0.676 -0.844
O3 0.000 -0.676 -0.844

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.17822.1782
O22.17821.3522
O32.17821.3522

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 71.917 Na1 O3 O2 71.917
O2 Na1 O3 36.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability