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All results from a given calculation for B2O2 (Diboron dioxide)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-198.084838
Energy at 298.15K-198.084209
Nuclear repulsion energy66.485402
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 HF/3-21G
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 2259 2046 0.00      
2 Σg 656 594 0.00      
3 Σu 2035 1843 218.92      
4 Πg 603 546 0.00      
4 Πg 603 546 0.00      
5 Πu 261 237 68.89      
5 Πu 261 237 68.89      

Unscaled Zero Point Vibrational Energy (zpe) 3339.1 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 3023.9 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 HF/3-21G
B
0.11614

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.812
B2 0.000 0.000 -0.812
O3 0.000 0.000 2.021
O4 0.000 0.000 -2.021

Atom - Atom Distances (Å)
  B1 B2 O3 O4
B11.62331.20922.8325
B21.62332.83251.2092
O31.20922.83254.0417
O42.83251.20924.0417

picture of Diboron dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 O4 180.000 B2 B1 O3 180.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.404 0.533   0.517
2 B 0.404 0.533   0.517
3 O -0.404 -0.533   -0.517
4 O -0.404 -0.533   -0.517


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 0.000 0.000 0.000 0.000
AIM        
ESP 0.000 0.000 0.000 0.000


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.797 0.000 0.000
y 0.000 -19.797 0.000
z 0.000 0.000 -36.632
Traceless
 xyz
x 8.418 0.000 0.000
y 0.000 8.418 0.000
z 0.000 0.000 -16.835
Polar
3z2-r2-33.670
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 1.779 0.000 0.000
y 0.000 1.779 0.000
z 0.000 0.000 4.702


<r2> (average value of r2) Å2
<r2> 87.798
(<r2>)1/2 9.370