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

using model chemistry: HF/6-31G

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 HF/6-31G
 hartrees
Energy at 0K-50.404062
Energy at 298.15K-50.404212
HF Energy-50.404062
Nuclear repulsion energy15.416948
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/6-31G
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 2939 2654 0.00      
2 Σg 1343 1212 0.00      
3 Σu 2894 2613 62.28      
4 Πg 611 552 0.00      
4 Πg 611 552 0.00      
5 Πu 676 610 3.07      
5 Πu 676 610 3.07      

Unscaled Zero Point Vibrational Energy (zpe) 4875.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 4401.7 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/6-31G
B
0.84448

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

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 1.923
H4 0.000 0.000 -1.923

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50751.16902.6766
B21.50752.67661.1690
H31.16902.67663.8456
H42.67661.16903.8456

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 HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.101      
2 B -0.101      
3 H 0.101      
4 H 0.101      


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 -13.774 0.000 0.000
y 0.000 -13.774 0.000
z 0.000 0.000 -13.075
Traceless
 xyz
x -0.349 0.000 0.000
y 0.000 -0.349 0.000
z 0.000 0.000 0.699
Polar
3z2-r21.398
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 1.969 0.000 0.000
y 0.000 1.969 0.000
z 0.000 0.000 7.390


<r2> (average value of r2) Å2
<r2> 21.533
(<r2>)1/2 4.640