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

using model chemistry: B3PW91/aug-cc-pVDZ

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 B3PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-50.747587
Energy at 298.15K-50.747615
HF Energy-50.747587
Nuclear repulsion energy15.257225
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 B3PW91/aug-cc-pVDZ
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 2818 2719 0.00      
2 Σg 1262 1217 0.00      
3 Σu 2775 2677 26.93      
4 Πg 564 544 0.00      
4 Πg 564 544 0.00      
5 Πu 608 587 0.02      
5 Πu 608 587 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4600.0 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 4437.2 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 B3PW91/aug-cc-pVDZ
B
0.82789

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.761
B2 0.000 0.000 -0.761
H3 0.000 0.000 1.945
H4 0.000 0.000 -1.945

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52121.18422.7054
B21.52122.70541.1842
H31.18422.70543.8897
H42.70541.18423.8897

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 B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.524      
2 B -0.524      
3 H 0.524      
4 H 0.524      


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 -12.348
Traceless
 xyz
x -0.877 0.000 0.000
y 0.000 -0.877 0.000
z 0.000 0.000 1.753
Polar
3z2-r23.506
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 4.343 0.000 0.000
y 0.000 4.343 0.000
z 0.000 0.000 7.352


<r2> (average value of r2) Å2
<r2> 21.792
(<r2>)1/2 4.668