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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: B3LYPultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at B3LYPultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-50.774862
Energy at 298.15K-50.774925
HF Energy-50.774862
Nuclear repulsion energy15.398540
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 B3LYPultrafine/6-31G(2df,p)
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 2847 2747 0.00      
2 Σg 1271 1226 0.00      
3 Σu 2806 2708 19.52      
4 Πg 581 561 0.00      
4 Πg 581 561 0.00      
5 Πu 627 605 2.04      
5 Πu 627 605 2.04      

Unscaled Zero Point Vibrational Energy (zpe) 4670.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4506.6 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 B3LYPultrafine/6-31G(2df,p)
B
0.84331

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.754
B2 0.000 0.000 -0.754
H3 0.000 0.000 1.927
H4 0.000 0.000 -1.927

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50721.17342.6806
B21.50722.68061.1734
H31.17342.68063.8540
H42.68061.17343.8540

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.067      
2 B -0.067      
3 H 0.067      
4 H 0.067      


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 -13.285 0.000 0.000
y 0.000 -13.285 0.000
z 0.000 0.000 -12.218
Traceless
 xyz
x -0.533 0.000 0.000
y 0.000 -0.533 0.000
z 0.000 0.000 1.067
Polar
3z2-r22.133
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 2.589 0.000 0.000
y 0.000 2.589 0.000
z 0.000 0.000 6.378


<r2> (average value of r2) Å2
<r2> 21.181
(<r2>)1/2 4.602