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

using model chemistry: ROMP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-312.028827
Energy at 298.15K 
HF Energy-311.528714
Nuclear repulsion energy66.910099
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/Def2TZVPP
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 987 987        
2 A1 425 425        
3 B2 496 496        

Unscaled Zero Point Vibrational Energy (zpe) 953.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 953.8 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/Def2TZVPP
ABC
1.08196 0.29448 0.23148

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.226
O2 0.000 0.698 -0.843
O3 0.000 -0.698 -0.843

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.18332.1833
O22.18331.3958
O32.18331.3958

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 71.358 Na1 O3 O2 71.358
O2 Na1 O3 37.284
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.831      
2 O -0.415      
3 O -0.415      


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> 44.947
(<r2>)1/2 6.704