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

using model chemistry: PBEPBE/STO-3G

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 PBEPBE/STO-3G
 hartrees
Energy at 0K-148.152146
Energy at 298.15K-148.152137
HF Energy-148.152146
Nuclear repulsion energy26.032981
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 PBEPBE/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 1604 1465 0.00 4.15 0.32 0.48

Unscaled Zero Point Vibrational Energy (zpe) 801.9 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 732.6 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 PBEPBE/STO-3G
B
1.24546

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.650
O2 0.000 0.000 -0.650

Atom - Atom Distances (Å)
  O1 O2
O11.3009
O21.3009

picture of Oxygen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.000      
2 O 0.000      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -8.508 0.000 0.000
y 0.000 -8.508 0.000
z 0.000 0.000 -9.282
Traceless
 xyz
x 0.387 0.000 0.000
y 0.000 0.387 0.000
z 0.000 0.000 -0.774
Polar
3z2-r2-1.548
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.175 0.000 0.000
y 0.000 0.175 0.000
z 0.000 0.000 1.057


<r2> (average value of r2) Å2
<r2> 12.245
(<r2>)1/2 3.499

State 2 (1Δg)

Jump to S1C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-148.084242
Energy at 298.15K-148.084232
HF Energy-148.084242
Nuclear repulsion energy25.915615
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 PBEPBE/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 1587 1450 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 793.3 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 724.8 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 PBEPBE/STO-3G
B
1.23426

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.653
O2 0.000 0.000 -0.653

Atom - Atom Distances (Å)
  O1 O2
O11.3068
O21.3068

picture of Oxygen diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.000      
2 O 0.000      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.256 0.000 0.000
y 0.000 -7.763 0.000
z 0.000 0.000 -9.262
Traceless
 xyz
x -0.743 0.000 0.000
y 0.000 1.496 0.000
z 0.000 0.000 -0.753
Polar
3z2-r2-1.506
x2-y2-1.493
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.175 0.000 0.000
y 0.000 0.175 0.000
z 0.000 0.000 1.057


<r2> (average value of r2) Å2
<r2> 12.303
(<r2>)1/2 3.508