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: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D*H 1Σg
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-398.697331
Energy at 298.15K 
HF Energy-398.485804
Nuclear repulsion energy63.829573
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 MP3/6-31+G**
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 404 376 0.00      
2 Σu 748 696 209.89      
3 Πu 31i 29i 136.99      
3 Πu 31i 29i 136.99      

Unscaled Zero Point Vibrational Energy (zpe) 544.7 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 506.9 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 MP3/6-31+G**
B
0.09537

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

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 1.959
Na3 0.000 0.000 -1.959

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.95911.9591
Na21.95913.9181
Na31.95913.9181

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 MP3/6-31+G**
 hartrees
Energy at 0K-398.715503
Energy at 298.15K-398.716985
HF Energy-398.499467
Nuclear repulsion energy62.568046
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 MP3/6-31+G**
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 367 341 0.00      
2 A1 80 75 186.31      
3 B2 695 647 190.32      

Unscaled Zero Point Vibrational Energy (zpe) 571.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 531.5 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 MP3/6-31+G**
B
0.09164

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.001
Na2 0.000 2.000 -0.000
Na3 0.000 -2.000 -0.000

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.00022.0002
Na22.00024.0005
Na32.00024.0005

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 179.948
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability