return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-312.404258
Energy at 298.15K 
HF Energy-312.404258
Nuclear repulsion energy69.295180
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 HSEh1PBE/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 1236 1175 1.42 10.88 0.37 0.54
2 A1 442 420 41.59 14.67 0.13 0.23
3 B2 383 364 1.01 14.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1030.3 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 979.8 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 HSEh1PBE/6-31G*
ABC
1.18013 0.31169 0.24657

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.192
O2 0.000 0.668 -0.819
O3 0.000 -0.668 -0.819

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.11892.1189
O22.11891.3365
O32.11891.3365

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 71.617 Na1 O3 O2 71.617
O2 Na1 O3 36.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.667      
2 O -0.334      
3 O -0.334      


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 7.758 7.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.167 0.000 0.000
y 0.000 -18.094 0.000
z 0.000 0.000 -10.951
Traceless
 xyz
x -0.644 0.000 0.000
y 0.000 -5.035 0.000
z 0.000 0.000 5.679
Polar
3z2-r211.358
x2-y22.927
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.484 0.000 0.000
y 0.000 3.459 0.000
z 0.000 0.000 2.521


<r2> (average value of r2) Å2
<r2> 42.705
(<r2>)1/2 6.535