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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G**
 hartrees
Energy at 0K-50.669759
Energy at 298.15K-50.669729
HF Energy-50.669759
Nuclear repulsion energy15.221398
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 PBEPBEultrafine/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 2779 2740 0.00      
2 Σg 1235 1218 0.00      
3 Σu 2740 2702 28.02      
4 Πg 545 538 0.00      
4 Πg 545 538 0.00      
5 Πu 594 586 2.59      
5 Πu 594 586 2.59      

Unscaled Zero Point Vibrational Energy (zpe) 4515.6 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 4453.7 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 PBEPBEultrafine/6-31G**
B
0.82391

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.763
B2 0.000 0.000 -0.763
H3 0.000 0.000 1.949
H4 0.000 0.000 -1.949

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52511.18662.7117
B21.52512.71171.1866
H31.18662.71173.8983
H42.71171.18663.8983

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 PBEPBEultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.033      
2 B -0.033      
3 H 0.033      
4 H 0.033      


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 -13.352 0.000 0.000
y 0.000 -13.352 0.000
z 0.000 0.000 -12.122
Traceless
 xyz
x -0.615 0.000 0.000
y 0.000 -0.615 0.000
z 0.000 0.000 1.231
Polar
3z2-r22.461
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 2.245 0.000 0.000
y 0.000 2.245 0.000
z 0.000 0.000 6.491


<r2> (average value of r2) Å2
<r2> 21.496
(<r2>)1/2 4.636