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 Na2O2 (disodium dioxide)

using model chemistry: B3PW91/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at B3PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-474.929154
Energy at 298.15K 
HF Energy-474.929154
Nuclear repulsion energy127.735974
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 B3PW91/daug-cc-pVTZ
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 764 764 0.00 36.42 0.02 0.04
2 Ag 351 351 0.00 40.72 0.03 0.05
3 B1u 548 548 146.20 0.00 0.00 0.00
4 B2u 245 245 110.87 0.00 0.00 0.00
5 B3g 485 485 0.00 7.78 0.75 0.86
6 B3u 69 69 116.65 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1230.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1230.9 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 B3PW91/daug-cc-pVTZ
ABC
0.87053 0.09815 0.08821

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/daug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.933
Na2 0.000 0.000 -1.933
O3 0.000 0.778 0.000
O4 0.000 -0.778 0.000

Atom - Atom Distances (Å)
  Na1 Na2 O3 O4
Na13.86542.08342.0834
Na23.86542.08342.0834
O32.08342.08341.5561
O42.08342.08341.5561

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 136.144 Na1 O4 Na2 136.144
O3 Na1 O4 43.856 O3 Na2 O4 43.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Na 0.890      
2 Na 0.890      
3 O -0.890      
4 O -0.890      


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 -23.064 0.000 0.000
y 0.000 -28.464 0.000
z 0.000 0.000 10.621
Traceless
 xyz
x -14.142 0.000 0.000
y 0.000 -22.243 0.000
z 0.000 0.000 36.385
Polar
3z2-r272.770
x2-y25.400
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.362 0.000 0.000
y 0.000 6.564 0.000
z 0.000 0.000 6.551


<r2> (average value of r2) Å2
<r2> 100.378
(<r2>)1/2 10.019