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

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-309.695078
Energy at 298.15K 
HF Energy-309.695078
Nuclear repulsion energy69.644083
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/3-21G*
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 1334 1204 3.30 6950784.00 0.33 0.50
2 A1 505 456 47.67 353.99 0.37 0.54
3 B2 263i 237i 894.81 1537.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 787.8 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 711.1 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/3-21G*
ABC
1.10753 0.33254 0.25575

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.154
O2 0.000 0.690 -0.793
O3 0.000 -0.690 -0.793

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.06532.0653
O22.06531.3796
O32.06531.3796

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 70.489 Na1 O3 O2 70.489
O2 Na1 O3 39.022
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.634      
2 O -0.317      
3 O -0.317      


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 7.734 7.734
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.167 0.000 0.000
y 0.000 -18.182 0.000
z 0.000 0.000 -11.077
Traceless
 xyz
x -0.537 0.000 0.000
y 0.000 -5.060 0.000
z 0.000 0.000 5.597
Polar
3z2-r211.194
x2-y23.015
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.274 0.000 0.000
y 0.000 18.511 0.000
z 0.000 0.000 1.344


<r2> (average value of r2) Å2
<r2> 41.566
(<r2>)1/2 6.447