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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-398.849513
Energy at 298.15K 
HF Energy-398.548091
Nuclear repulsion energy61.809438
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/Def2TZVPP
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 339 322 0.00      
2 Σu 647 615 114.23      
3 Πu 14i 14i 91.80      
3 Πu 14i 14i 91.80      

Unscaled Zero Point Vibrational Energy (zpe) 478.4 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 455.2 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 MP2/Def2TZVPP
B
0.08943

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

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 2.001
Na3 0.000 0.000 -2.001

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.00102.0010
Na22.00104.0020
Na32.00104.0020

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/Def2TZVPP
 hartrees
Energy at 0K-398.849518
Energy at 298.15K-398.850837
HF Energy-398.547768
Nuclear repulsion energy61.880191
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/Def2TZVPP
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 343 326 1.13      
2 A1 21 20 85.72      
3 B2 643 612 112.36      

Unscaled Zero Point Vibrational Energy (zpe) 503.6 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 479.1 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/Def2TZVPP
ABC
25.84712 0.09054 0.09022

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.417
Na2 0.000 1.938 -0.152
Na3 0.000 -1.938 -0.152

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.01942.0194
Na22.01943.8750
Na32.01943.8750

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 147.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability