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

using model chemistry: B3LYP/CEP-121G

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 B3LYP/CEP-121G
 hartrees
Energy at 0K-6.640550
Energy at 298.15K-6.640614
HF Energy-6.640550
Nuclear repulsion energy7.107051
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 B3LYP/CEP-121G
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 2794 2723 0.00      
2 Σg 1229 1198 0.00      
3 Σu 2737 2667 29.96      
4 Πg 586 571 0.00      
4 Πg 586 571 0.00      
5 Πu 615 600 0.00      
5 Πu 615 600 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4581.0 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 4464.1 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 B3LYP/CEP-121G
B
0.82148

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.765
B2 0.000 0.000 -0.765
H3 0.000 0.000 1.947
H4 0.000 0.000 -1.947

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52991.18162.7115
B21.52992.71151.1816
H31.18162.71153.8931
H42.71151.18163.8931

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 B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.216      
2 B -0.216      
3 H 0.216      
4 H 0.216      


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 -14.039 0.000 0.000
y 0.000 -14.039 0.000
z 0.000 0.000 -12.431
Traceless
 xyz
x -0.804 0.000 0.000
y 0.000 -0.804 0.000
z 0.000 0.000 1.608
Polar
3z2-r23.217
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 2.730 0.000 0.000
y 0.000 2.730 0.000
z 0.000 0.000 7.318


<r2> (average value of r2) Å2
<r2> 19.523
(<r2>)1/2 4.418