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All results from a given calculation for Na2O2 (disodium dioxide)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at HF/SDD
 hartrees
Energy at 0K-473.350728
Energy at 298.15K 
HF Energy-473.350728
Nuclear repulsion energy127.948227
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/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 849 764 0.00 102.90 0.30 0.46
2 Ag 380 342 0.00 4.92 0.36 0.53
3 B1u 590 531 151.03 0.00 0.54 0.70
4 B2u 251 226 104.48 0.00 0.11 0.20
5 B3g 506 455 0.00 10.40 0.75 0.86
6 B3u 97 87 164.52 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1336.1 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 1203.0 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/SDD
ABC
0.84847 0.09953 0.08908

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.919
Na2 0.000 0.000 -1.919
O3 0.000 0.788 0.000
O4 0.000 -0.788 0.000

Atom - Atom Distances (Å)
  Na1 Na2 O3 O4
Na13.83852.07472.0747
Na23.83852.07472.0747
O32.07472.07471.5762
O42.07472.07471.5762

picture of disodium dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na1 O3 Na2 135.351 Na1 O4 Na2 135.351
O3 Na1 O4 44.649 O3 Na2 O4 44.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.830      
2 Na 0.830      
3 O -0.830      
4 O -0.830      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.480 0.000 0.000
y 0.000 -27.639 0.000
z 0.000 0.000 12.527
Traceless
 xyz
x -13.924 0.000 0.000
y 0.000 -23.163 0.000
z 0.000 0.000 37.087
Polar
3z2-r274.174
x2-y26.159
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.514 0.000 0.000
y 0.000 4.714 0.000
z 0.000 0.000 3.005


<r2> (average value of r2) Å2
<r2> 98.592
(<r2>)1/2 9.929