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

using model chemistry: PBE1PBE/3-21G

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 PBE1PBE/3-21G
 hartrees
Energy at 0K-50.400228
Energy at 298.15K-50.400419
HF Energy-50.400228
Nuclear repulsion energy15.303882
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 PBE1PBE/3-21G
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 2872 2759 0.00      
2 Σg 1277 1226 0.00      
3 Σu 2820 2709 32.50      
4 Πg 678 652 0.00      
4 Πg 678 652 0.00      
5 Πu 646 620 3.14      
5 Πu 646 620 3.14      

Unscaled Zero Point Vibrational Energy (zpe) 4809.1 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 4618.7 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 PBE1PBE/3-21G
B
0.83223

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.759
B2 0.000 0.000 -0.759
H3 0.000 0.000 1.937
H4 0.000 0.000 -1.937

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51841.17802.6964
B21.51842.69641.1780
H31.17802.69643.8744
H42.69641.17803.8744

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 PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.011      
2 B -0.011      
3 H 0.011      
4 H 0.011      


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 -14.101 0.000 0.000
y 0.000 -14.101 0.000
z 0.000 0.000 -12.702
Traceless
 xyz
x -0.700 0.000 0.000
y 0.000 -0.700 0.000
z 0.000 0.000 1.399
Polar
3z2-r22.798
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 2.145 0.000 0.000
y 0.000 2.145 0.000
z 0.000 0.000 6.564


<r2> (average value of r2) Å2
<r2> 21.786
(<r2>)1/2 4.668