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

using model chemistry: CISD/6-311G*

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 CISD/6-311G*
 hartrees
Energy at 0K-150.001505
Energy at 298.15K-150.001503
HF Energy-149.657807
Nuclear repulsion energy28.464932
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/6-311G*
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 1756 1625 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 878.1 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 812.5 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/6-311G*
B
1.48903

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.595
O2 0.000 0.000 -0.595

Atom - Atom Distances (Å)
  O1 O2
O11.1898
O21.1898

picture of Oxygen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1Δg)

Jump to S1C1
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-149.942077
Energy at 298.15K-149.942074
HF Energy-149.571931
Nuclear repulsion energy28.355739
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/6-311G*
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 1715 1587 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 857.7 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 793.6 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/6-311G*
B
1.47763

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.597
O2 0.000 0.000 -0.597

Atom - Atom Distances (Å)
  O1 O2
O11.1944
O21.1944

picture of Oxygen diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability