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

using model chemistry: MP2/6-31G*

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 MP2/6-31G*
 hartrees
Energy at 0K-398.731359
Energy at 298.15K 
HF Energy-398.483757
Nuclear repulsion energy61.998723
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 MP2/6-31G*
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 341 322 0.00      
2 Σu 651 614 98.76      
3 Πu 70i 66i 58.70      
3 Πu 70i 66i 58.70      

Unscaled Zero Point Vibrational Energy (zpe) 426.1 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 401.8 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 MP2/6-31G*
B
0.08998

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

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 1.997
Na3 0.000 0.000 -1.997

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.99701.9970
Na21.99703.9941
Na31.99703.9941

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 MP2/6-31G*
 hartrees
Energy at 0K-398.732859
Energy at 298.15K-398.734293
HF Energy-398.479591
Nuclear repulsion energy62.744101
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 MP2/6-31G*
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 374 353 2.36      
2 A1 83 78 16.51      
3 B2 593 559 81.73      

Unscaled Zero Point Vibrational Energy (zpe) 524.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 494.7 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 MP2/6-31G*
ABC
1.91467 0.10634 0.10075

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.256
Na2 0.000 1.975 -0.093
Na3 0.000 -1.975 -0.093

Atom - Atom Distances (Å)
  O1 Na2 Na3
O12.00572.0057
Na22.00573.9502
Na32.00573.9502

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 159.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability