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: MP2=FULL/6-311+G(3df,2p)

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 MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-399.172189
Energy at 298.15K-399.173128
HF Energy-398.534360
Nuclear repulsion energy62.200231
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 MP2=FULL/6-311+G(3df,2p)
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 336 316 0.00      
2 Σu 644 607 107.34      
3 Πu 35 33 111.71      
3 Πu 35 33 111.71      

Unscaled Zero Point Vibrational Energy (zpe) 524.4 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 494.3 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 MP2=FULL/6-311+G(3df,2p)
B
0.09056

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

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 2.012
Na3 0.000 0.000 -2.012

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.01212.0121
Na22.01214.0241
Na32.01214.0241

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

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-399.172189
Energy at 298.15K-399.173530
HF Energy-398.534358
Nuclear repulsion energy62.197951
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 MP2=FULL/6-311+G(3df,2p)
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 335 316 0.00      
2 A1 35 33 111.70      
3 B2 643 607 107.35      

Unscaled Zero Point Vibrational Energy (zpe) 506.9 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 477.9 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 MP2=FULL/6-311+G(3df,2p)
B
0.09056

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.001
Na2 0.000 2.012 -0.000
Na3 0.000 -2.012 -0.000

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.01212.0121
Na22.01214.0243
Na32.01214.0243

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 179.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability