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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G**
 hartrees
Energy at 0K-50.684489
Energy at 298.15K-50.684540
HF Energy-50.684489
Nuclear repulsion energy15.321052
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 PBE1PBE/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 2849 2715 0.00      
2 Σg 1279 1219 0.00      
3 Σu 2810 2678 33.90      
4 Πg 581 554 0.00      
4 Πg 581 554 0.00      
5 Πu 620 591 2.80      
5 Πu 620 591 2.80      

Unscaled Zero Point Vibrational Energy (zpe) 4669.9 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 4450.9 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 PBE1PBE/6-31G**
B
0.83547

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.757
B2 0.000 0.000 -0.757
H3 0.000 0.000 1.938
H4 0.000 0.000 -1.938

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51321.18162.6949
B21.51322.69491.1816
H31.18162.69493.8765
H42.69491.18163.8765

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 PBE1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.075      
2 B -0.075      
3 H 0.075      
4 H 0.075      


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 -13.400 0.000 0.000
y 0.000 -13.400 0.000
z 0.000 0.000 -12.134
Traceless
 xyz
x -0.633 0.000 0.000
y 0.000 -0.633 0.000
z 0.000 0.000 1.267
Polar
3z2-r22.534
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 2.183 0.000 0.000
y 0.000 2.183 0.000
z 0.000 0.000 6.510


<r2> (average value of r2) Å2
<r2> 21.344
(<r2>)1/2 4.620