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

using model chemistry: B3LYP/aug-cc-pVQZ

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 B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-50.793173
Energy at 298.15K-50.793220
HF Energy-50.793173
Nuclear repulsion energy15.428387
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 B3LYP/aug-cc-pVQZ
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 2829 2741 0.00      
2 Σg 1262 1223 0.00      
3 Σu 2791 2704 27.60      
4 Πg 582 564 0.00      
4 Πg 582 564 0.00      
5 Πu 608 589 0.16      
5 Πu 608 589 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 4630.5 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 4486.5 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 B3LYP/aug-cc-pVQZ
B
0.84632

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.752
B2 0.000 0.000 -0.752
H3 0.000 0.000 1.923
H4 0.000 0.000 -1.923

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50501.17022.6752
B21.50502.67521.1702
H31.17022.67523.8454
H42.67521.17023.8454

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 B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.256      
2 B 0.256      
3 H -0.256      
4 H -0.256      


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 -14.094 0.000 0.000
y 0.000 -14.094 0.000
z 0.000 0.000 -12.628
Traceless
 xyz
x -0.733 0.000 0.000
y 0.000 -0.733 0.000
z 0.000 0.000 1.466
Polar
3z2-r22.932
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 4.405 0.000 0.000
y 0.000 4.405 0.000
z 0.000 0.000 7.215


<r2> (average value of r2) Å2
<r2> 21.553
(<r2>)1/2 4.643