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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-393.390034
Energy at 298.15K 
HF Energy-393.340150
Nuclear repulsion energy70.653368
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/STO-3G
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 615 536 0.00      
2 Σu 1122 978 184.19      
3 Πu 181i 158i 82.10      
3 Πu 181i 158i 82.10      

Unscaled Zero Point Vibrational Energy (zpe) 687.8 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 599.7 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/STO-3G
B
0.11685

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

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 1.771
Na3 0.000 0.000 -1.771

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.77131.7713
Na21.77133.5427
Na31.77133.5427

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/STO-3G
 hartrees
Energy at 0K-393.423546
Energy at 298.15K-393.425586
HF Energy-393.350776
Nuclear repulsion energy74.692519
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/STO-3G
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 827 721 33.54      
2 A1 277 242 7.47      
3 B2 855 746 115.59      

Unscaled Zero Point Vibrational Energy (zpe) 979.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 854.1 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/STO-3G
ABC
0.87580 0.20763 0.16784

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.934
Na2 0.000 1.329 -0.340
Na3 0.000 -1.329 -0.340

Atom - Atom Distances (Å)
  O1 Na2 Na3
O11.84061.8406
Na21.84062.6577
Na31.84062.6577

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 92.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability