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

using model chemistry: ROMP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-307.584926
Energy at 298.15K 
HF Energy-307.482366
Nuclear repulsion energy72.319022
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/STO-3G
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 1238 1238        
2 A1 736 736        
3 B2 800 800        

Unscaled Zero Point Vibrational Energy (zpe) 1387.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1387.0 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/STO-3G
ABC
1.06131 0.39072 0.28558

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.064
O2 0.000 0.705 -0.732
O3 0.000 -0.705 -0.732

Atom - Atom Distances (Å)
  Na1 O2 O3
Na11.92921.9292
O21.92921.4093
O31.92921.4093

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 68.577 Na1 O3 O2 68.577
O2 Na1 O3 42.846
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.708      
2 O -0.354      
3 O -0.354      


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> 36.758
(<r2>)1/2 6.063