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

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-311.489575
Energy at 298.15K 
HF Energy-311.489575
Nuclear repulsion energy70.334869
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/6-31G(2df,p)
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 1430 1295 0.00 453.14 0.29 0.45
2 A1 458 414 58.03 0.77 0.16 0.28
3 B2 373 338 0.01 6.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1130.3 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 1023.5 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/6-31G(2df,p)
ABC
1.26257 0.31209 0.25024

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.191
O2 0.000 0.646 -0.819
O3 0.000 -0.646 -0.819

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.11082.1108
O22.11081.2921
O32.11081.2921

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 72.177 Na1 O3 O2 72.177
O2 Na1 O3 35.645
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.759      
2 O -0.379      
3 O -0.379      


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 8.046 8.046
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.078 0.000 0.000
y 0.000 -17.721 0.000
z 0.000 0.000 -10.622
Traceless
 xyz
x -0.907 0.000 0.000
y 0.000 -4.870 0.000
z 0.000 0.000 5.777
Polar
3z2-r211.554
x2-y22.642
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.744 0.000 0.000
y 0.000 4.174 0.000
z 0.000 0.000 1.818


<r2> (average value of r2) Å2
<r2> 42.040
(<r2>)1/2 6.484