return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/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 BLYP/6-311G**
 hartrees
Energy at 0K-150.362426
Energy at 298.15K-150.362418
HF Energy-150.362426
Nuclear repulsion energy27.490403
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 BLYP/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 1491 1486 0.00 12.28 0.34 0.51

Unscaled Zero Point Vibrational Energy (zpe) 745.7 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 742.8 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 BLYP/6-311G**
B
1.38882

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.616
O2 0.000 0.000 -0.616

Atom - Atom Distances (Å)
  O1 O2
O11.2320
O21.2320

picture of Oxygen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** 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 -9.905 0.000 0.000
y 0.000 -9.905 0.000
z 0.000 0.000 -10.549
Traceless
 xyz
x 0.322 0.000 0.000
y 0.000 0.322 0.000
z 0.000 0.000 -0.644
Polar
3z2-r2-1.288
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 0.522 0.000 0.000
y 0.000 0.522 0.000
z 0.000 0.000 1.892


<r2> (average value of r2) Å2
<r2> 12.392
(<r2>)1/2 3.520

State 2 (1Δg)

Jump to S1C1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-150.303347
Energy at 298.15K-150.303339
HF Energy-150.303347
Nuclear repulsion energy27.439396
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 BLYP/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 1472 1467 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 736.2 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 733.3 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 BLYP/6-311G**
B
1.38367

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.617
O2 0.000 0.000 -0.617

Atom - Atom Distances (Å)
  O1 O2
O11.2343
O21.2343

picture of Oxygen diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** 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 -10.881 0.000 0.000
y 0.000 -9.021 0.000
z 0.000 0.000 -10.592
Traceless
 xyz
x -1.075 0.000 0.000
y 0.000 1.716 0.000
z 0.000 0.000 -0.641
Polar
3z2-r2-1.283
x2-y2-1.861
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.522 0.000 0.000
y 0.000 0.522 0.000
z 0.000 0.000 1.892


<r2> (average value of r2) Å2
<r2> 12.442
(<r2>)1/2 3.527