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

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-31.449275
Energy at 298.15K 
HF Energy-31.449275
Nuclear repulsion energy17.053447
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 HF/CEP-121G
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 1305 1191 0.02 44116.80 0.33 0.49
2 A1 403 367 52.06 0.74 0.61 0.76
3 B2 249 227 41.36 41.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 978.1 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 892.6 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 HF/CEP-121G
ABC
1.15341 0.30433 0.24079

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.206
O2 0.000 0.676 -0.829
O3 0.000 -0.676 -0.829

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.14432.1443
O22.14431.3519
O32.14431.3519

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 71.626 Na1 O3 O2 71.626
O2 Na1 O3 36.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.903      
2 O -0.451      
3 O -0.451      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 9.121 9.121
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.371 0.000 0.000
y 0.000 -16.001 0.000
z 0.000 0.000 -8.748
Traceless
 xyz
x 0.004 0.000 0.000
y 0.000 -5.441 0.000
z 0.000 0.000 5.438
Polar
3z2-r210.876
x2-y23.630
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.066 0.000 0.000
y 0.000 8.105 0.000
z 0.000 0.000 1.230


<r2> (average value of r2) Å2
<r2> 22.913
(<r2>)1/2 4.787