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

using model chemistry: PBE1PBE/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 PBE1PBE/TZVP
 hartrees
Energy at 0K-50.700442
Energy at 298.15K-50.700480
HF Energy-50.700442
Nuclear repulsion energy15.356518
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/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 2823 2709 0.00      
2 Σg 1268 1217 0.00      
3 Σu 2783 2671 25.62      
4 Πg 576 553 0.00      
4 Πg 576 553 0.00      
5 Πu 606 582 0.28      
5 Πu 606 582 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 4619.1 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 4432.5 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 PBE1PBE/TZVP
B
0.83909

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.755
B2 0.000 0.000 -0.755
H3 0.000 0.000 1.933
H4 0.000 0.000 -1.933

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51041.17792.6884
B21.51042.68841.1779
H31.17792.68843.8663
H42.68841.17793.8663

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/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.042      
2 B -0.042      
3 H 0.042      
4 H 0.042      


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 -14.044 0.000 0.000
y 0.000 -14.044 0.000
z 0.000 0.000 -12.472
Traceless
 xyz
x -0.786 0.000 0.000
y 0.000 -0.786 0.000
z 0.000 0.000 1.571
Polar
3z2-r23.143
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 3.000 0.000 0.000
y 0.000 3.000 0.000
z 0.000 0.000 7.280


<r2> (average value of r2) Å2
<r2> 21.622
(<r2>)1/2 4.650