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 Na2O (disodium monoxide)

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 D*H 1Σg
1 2 no C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-398.504399
Energy at 298.15K-398.505685
HF Energy-398.504399
Nuclear repulsion energy63.528127
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 Σg 391 354 0.00      
2 Σu 744 673 194.89      
3 Πu 101 91 166.23      
3 Πu 101 91 166.23      

Unscaled Zero Point Vibrational Energy (zpe) 668.3 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 605.2 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)
B
0.09447

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.000
Na2 0.000 0.000 1.970
Na3 0.000 0.000 -1.970

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.97001.9700
Na21.97003.9400
Na31.97003.9400

picture of disodium monoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 O1 Na3 180.000
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 O -0.880      
2 Na 0.440      
3 Na 0.440      


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 -18.698 0.000 0.000
y 0.000 -18.698 0.000
z 0.000 0.000 16.680
Traceless
 xyz
x -17.689 0.000 0.000
y 0.000 -17.689 0.000
z 0.000 0.000 35.378
Polar
3z2-r270.756
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.152 0.000 0.000
y 0.000 6.152 0.000
z 0.000 0.000 7.510


<r2> (average value of r2) Å2
<r2> 89.693
(<r2>)1/2 9.471

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-398.504399
Energy at 298.15K-398.505963
HF Energy-398.504399
Nuclear repulsion energy63.563634
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 392 355 0.00      
2 A1 99 90 166.31      
3 B2 745 675 194.71      

Unscaled Zero Point Vibrational Energy (zpe) 618.5 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 560.0 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/6-31G(2df,p)
B
0.09458

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)
O1 0.000 0.000 0.001
Na2 0.000 1.969 -0.000
Na3 0.000 -1.969 -0.000

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.96891.9689
Na21.96893.9378
Na31.96893.9378

picture of disodium monoxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 O1 Na3 179.952
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 O -0.880      
2 Na 0.440      
3 Na 0.440      


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 -0.006 0.006
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.696 0.000 0.000
y 0.000 16.646 0.000
z 0.000 0.000 -18.696
Traceless
 xyz
x -17.671 0.000 0.000
y 0.000 35.342 0.000
z 0.000 0.000 -17.671
Polar
3z2-r2-35.342
x2-y2-35.342
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.148 0.000 0.000
y 0.000 7.498 0.000
z 0.000 0.000 6.148


<r2> (average value of r2) Å2
<r2> 89.603
(<r2>)1/2 9.466