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

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-398.701578
Energy at 298.15K 
HF Energy-398.485447
Nuclear repulsion energy63.217454
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 CISD/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 378 350 0.00      
2 Σu 713 660 145.22      
3 Πu 47i 44i 100.02      
3 Πu 47i 44i 100.02      

Unscaled Zero Point Vibrational Energy (zpe) 498.3 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 461.3 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 CISD/6-31G*
B
0.09355

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/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 1.980
Na3 0.000 0.000 -1.980

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.97971.9797
Na21.97973.9594
Na31.97973.9594

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 CISD/6-31G*
 hartrees
Energy at 0K-398.701789
Energy at 298.15K-398.703261
HF Energy-398.484733
Nuclear repulsion energy63.529449
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 CISD/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 397 368 6.18      
2 A1 61 57 74.86      
3 B2 694 642 139.43      

Unscaled Zero Point Vibrational Energy (zpe) 576.2 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 533.5 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 CISD/6-31G*
ABC
6.04620 0.09888 0.09729

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.355
Na2 0.000 1.926 -0.129
Na3 0.000 -1.926 -0.129

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.98571.9857
Na21.98573.8512
Na31.98573.8512

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 151.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability