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All results from a given calculation for Na2O (disodium monoxide)

using model chemistry: MP2/SDD

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 MP2/SDD
 hartrees
Energy at 0K-398.679655
Energy at 298.15K 
HF Energy-398.498336
Nuclear repulsion energy61.375834
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/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 Σg 327 315 0.00      
2 Σu 631 609 94.16      
3 Πu 13i 12i 57.71      
3 Πu 13i 12i 57.71      

Unscaled Zero Point Vibrational Energy (zpe) 465.9 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 449.7 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/SDD
B
0.08818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

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 2.039
Na3 0.000 0.000 -2.039

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.03912.0391
Na22.03914.0782
Na32.03914.0782

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/SDD
 hartrees
Energy at 0K-398.679676
Energy at 298.15K-398.680996
HF Energy-398.494523
Nuclear repulsion energy61.750322
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/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 A1 343 331 3.05      
2 A1 37 36 25.53      
3 B2 596 575 78.85      

Unscaled Zero Point Vibrational Energy (zpe) 488.2 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 471.3 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/SDD
ABC
3.13484 0.09705 0.09413

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.494
Na2 0.000 1.944 -0.180
Na3 0.000 -1.944 -0.180

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.05692.0569
Na22.05693.8873
Na32.05693.8873

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 141.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability