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All results from a given calculation for O2 (Oxygen diatomic)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
2 1 yes D*H 1Δg

State 1 (3Σg)

Jump to S2C1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-149.964820
Energy at 298.15K-149.964811
HF Energy-149.608179
Nuclear repulsion energy27.300135
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 MP4/6-31G*
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 1465 1399        

Unscaled Zero Point Vibrational Energy (zpe) 732.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 699.2 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 MP4/6-31G*
B
1.37024

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.620
O2 0.000 0.000 -0.620

Atom - Atom Distances (Å)
  O1 O2
O11.2403
O21.2403

picture of Oxygen diatomic state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

State 2 (1Δg)

Jump to S1C1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-149.915493
Energy at 298.15K-149.915475
HF Energy-149.515973
Nuclear repulsion energy26.776355
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 MP4/6-31G*
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 1284 1226        

Unscaled Zero Point Vibrational Energy (zpe) 642.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 613.2 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 MP4/6-31G*
B
1.31821

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.632
O2 0.000 0.000 -0.632

Atom - Atom Distances (Å)
  O1 O2
O11.2645
O21.2645

picture of Oxygen diatomic state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability