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: BLYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at BLYP/TZVP
 hartrees
Energy at 0K-312.704271
Energy at 298.15K 
HF Energy-312.704271
Nuclear repulsion energy67.164395
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 BLYP/TZVP
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 1022 1019 6.02 940.20 0.27 0.42
2 A1 398 397 35.40 187.07 0.18 0.31
3 B2 327 326 0.12 342.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 872.7 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 870.6 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 BLYP/TZVP
ABC
1.09141 0.29628 0.23302

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.222
O2 0.000 0.695 -0.840
O3 0.000 -0.695 -0.840

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.17632.1763
O22.17631.3897
O32.17631.3897

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 71.381 Na1 O3 O2 71.381
O2 Na1 O3 37.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.810      
2 O -0.405      
3 O -0.405      


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 8.250 8.250
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.773 0.000 0.000
y 0.000 -19.208 0.000
z 0.000 0.000 -12.018
Traceless
 xyz
x -0.160 0.000 0.000
y 0.000 -5.313 0.000
z 0.000 0.000 5.473
Polar
3z2-r210.946
x2-y23.435
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.427 0.000 0.000
y 0.000 5.268 0.000
z 0.000 0.000 3.716


<r2> (average value of r2) Å2
<r2> 45.237
(<r2>)1/2 6.726