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

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 D*H 3ΣG
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-50.681536
Energy at 298.15K-50.681515
HF Energy-50.681536
Nuclear repulsion energy15.273801
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 Σg 2764 2739 0.00      
2 Σg 1228 1217 0.00      
3 Σu 2723 2698 24.40      
4 Πg 553 548 0.00      
4 Πg 553 548 0.00      
5 Πu 585 579 0.52      
5 Πu 585 579 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 4495.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 4454.1 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**
B
0.82977

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.760
B2 0.000 0.000 -0.760
H3 0.000 0.000 1.943
H4 0.000 0.000 -1.943

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51941.18322.7026
B21.51942.70261.1832
H31.18322.70263.8858
H42.70261.18323.8858

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 PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.007      
2 B -0.007      
3 H 0.007      
4 H 0.007      


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 -14.040 0.000 0.000
y 0.000 -14.040 0.000
z 0.000 0.000 -12.436
Traceless
 xyz
x -0.802 0.000 0.000
y 0.000 -0.802 0.000
z 0.000 0.000 1.605
Polar
3z2-r23.210
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 2.772 0.000 0.000
y 0.000 2.772 0.000
z 0.000 0.000 7.065


<r2> (average value of r2) Å2
<r2> 21.756
(<r2>)1/2 4.664