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

using model chemistry: B3LYP/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 B3LYP/TZVP
 hartrees
Energy at 0K-50.788600
Energy at 298.15K-50.788653
HF Energy-50.788600
Nuclear repulsion energy15.398520
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/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 2832 2734 0.00      
2 Σg 1264 1221 0.00      
3 Σu 2794 2697 28.69      
4 Πg 586 566 0.00      
4 Πg 586 566 0.00      
5 Πu 609 588 0.51      
5 Πu 609 588 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 4639.9 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 4479.4 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/TZVP
B
0.84310

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

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 1.927
H4 0.000 0.000 -1.927

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50771.17272.6804
B21.50772.68041.1727
H31.17272.68043.8531
H42.68041.17273.8531

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/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.008      
2 B 0.008      
3 H -0.008      
4 H -0.008      


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 -14.085 0.000 0.000
y 0.000 -14.085 0.000
z 0.000 0.000 -12.767
Traceless
 xyz
x -0.659 0.000 0.000
y 0.000 -0.659 0.000
z 0.000 0.000 1.318
Polar
3z2-r22.637
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 3.057 0.000 0.000
y 0.000 3.057 0.000
z 0.000 0.000 7.255


<r2> (average value of r2) Å2
<r2> 21.629
(<r2>)1/2 4.651