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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-51.933167
Energy at 298.15K-51.935452
HF Energy-51.933167
Nuclear repulsion energy22.324138
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 PBEPBE/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2496 2470 0.00      
2 A1 1143 1131 0.00      
3 A1 868 859 0.00      
4 B1 585 579 0.00      
5 B2 2475 2449 46.24      
6 B2 1069 1058 0.06      
7 E 2540 2514 65.27      
7 E 2540 2514 65.27      
8 E 941 932 21.35      
8 E 941 932 21.35      
9 E 337 333 0.90      
9 E 337 333 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 8137.1 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 8052.4 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 PBEPBE/6-311G*
ABC
4.01949 0.66965 0.66965

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.810
B2 0.000 0.000 -0.810
H3 0.000 1.020 1.462
H4 0.000 -1.020 1.462
H5 1.020 0.000 -1.462
H6 -1.020 0.000 -1.462

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62081.21031.21032.49072.4907
B21.62082.49072.49071.21031.2103
H31.21032.49072.04003.26023.2602
H41.21032.49072.04003.26023.2602
H52.49071.21033.26023.26022.0400
H62.49071.21033.26023.26022.0400

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 122.566 B1 B2 H6 122.566
B2 B1 H3 122.566 B2 B1 H4 122.566
H3 B1 H4 114.868 H5 B2 H6 114.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.178      
2 B -0.178      
3 H 0.089      
4 H 0.089      
5 H 0.089      
6 H 0.089      


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 -14.791 0.000 0.000
y 0.000 -14.791 0.000
z 0.000 0.000 -16.474
Traceless
 xyz
x 0.842 0.000 0.000
y 0.000 0.842 0.000
z 0.000 0.000 -1.683
Polar
3z2-r2-3.366
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 3.780 0.000 0.000
y 0.000 3.780 0.000
z 0.000 0.000 6.353


<r2> (average value of r2) Å2
<r2> 28.866
(<r2>)1/2 5.373