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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-398.791508
Energy at 298.15K 
HF Energy-398.535071
Nuclear repulsion energy61.554638
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/TZVP
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 335 317 0.00      
2 Σu 640 607 101.65      
3 Πu 15i 14i 81.40      
3 Πu 15i 14i 81.40      

Unscaled Zero Point Vibrational Energy (zpe) 472.7 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 448.1 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/TZVP
B
0.08869

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

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 2.033
Na3 0.000 0.000 -2.033

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.03322.0332
Na22.03324.0663
Na32.03324.0663

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/TZVP
 hartrees
Energy at 0K-398.791516
Energy at 298.15K-398.792832
HF Energy-398.534465
Nuclear repulsion energy61.627435
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/TZVP
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 339 321 0.39      
2 A1 23 22 71.91      
3 B2 634 601 98.81      

Unscaled Zero Point Vibrational Energy (zpe) 498.1 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 472.1 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/TZVP
ABC
18.42879 0.09015 0.08971

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.204
Na2 0.000 2.017 -0.074
Na3 0.000 -2.017 -0.074

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.03572.0357
Na22.03574.0333
Na32.03574.0333

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 164.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability