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

using model chemistry: TPSSh/TZVP

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 TPSSh/TZVP
 hartrees
Energy at 0K-50.795732
Energy at 298.15K-50.795744
HF Energy-50.795732
Nuclear repulsion energy15.330807
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 TPSSh/TZVP
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 2819 2716 0.00      
2 Σg 1252 1207 0.00      
3 Σu 2780 2679 35.57      
4 Πg 554 534 0.00      
4 Πg 554 534 0.00      
5 Πu 610 588 0.35      
5 Πu 610 588 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 4588.7 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 4422.2 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 TPSSh/TZVP
B
0.83544

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.758
B2 0.000 0.000 -0.758
H3 0.000 0.000 1.934
H4 0.000 0.000 -1.934

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51511.17692.6920
B21.51512.69201.1769
H31.17692.69203.8689
H42.69201.17693.8689

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 TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.058      
2 B -0.058      
3 H 0.058      
4 H 0.058      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.981 0.000 0.000
y 0.000 2.981 0.000
z 0.000 0.000 7.243


<r2> (average value of r2) Å2
<r2> 21.631
(<r2>)1/2 4.651