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

using model chemistry: ROMP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at ROMP2/6-31G
 hartrees
Energy at 0K-311.696866
Energy at 298.15K 
HF Energy-311.393514
Nuclear repulsion energy64.589370
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 ROMP2/6-31G
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 707 707        
2 A1 420 420        
3 B2 379 379        

Unscaled Zero Point Vibrational Energy (zpe) 753.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 753.0 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 ROMP2/6-31G
ABC
0.88902 0.30073 0.22471

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.213
O2 0.000 0.770 -0.834
O3 0.000 -0.770 -0.834

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.18712.1871
O22.18711.5398
O32.18711.5398

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 69.389 Na1 O3 O2 69.389
O2 Na1 O3 41.222
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.841      
2 O -0.420      
3 O -0.420      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 46.238
(<r2>)1/2 6.800