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

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-311.810171
Energy at 298.15K 
HF Energy-311.472383
Nuclear repulsion energy68.208875
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 CISD/6-31G*
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 1264 1171 10.62      
2 A1 453 419 71.13      
3 B2 437 405 88.90      

Unscaled Zero Point Vibrational Energy (zpe) 1077.3 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 997.3 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 CISD/6-31G*
ABC
1.15775 0.29918 0.23774

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.216
O2 0.000 0.675 -0.836
O3 0.000 -0.675 -0.836

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.16042.1604
O22.16041.3493
O32.16041.3493

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 71.803 Na1 O3 O2 71.803
O2 Na1 O3 36.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability