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

using model chemistry: B3PW91/6-311G**

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 B3PW91/6-311G**
 hartrees
Energy at 0K-50.755138
Energy at 298.15K-50.755169
HF Energy-50.755138
Nuclear repulsion energy15.367864
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 B3PW91/6-311G**
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 2817 2713 0.00      
2 Σg 1261 1214 0.00      
3 Σu 2776 2673 26.85      
4 Πg 571 550 0.00      
4 Πg 571 550 0.00      
5 Πu 606 584 0.56      
5 Πu 606 584 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 4603.8 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 4433.9 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 B3PW91/6-311G**
B
0.84012

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

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 1.931
H4 0.000 0.000 -1.931

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50981.17632.6861
B21.50982.68611.1763
H31.17632.68613.8625
H42.68611.17633.8625

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 B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.013      
2 B -0.013      
3 H 0.013      
4 H 0.013      


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 -13.979 0.000 0.000
y 0.000 -13.979 0.000
z 0.000 0.000 -12.341
Traceless
 xyz
x -0.819 0.000 0.000
y 0.000 -0.819 0.000
z 0.000 0.000 1.639
Polar
3z2-r23.277
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 2.727 0.000 0.000
y 0.000 2.727 0.000
z 0.000 0.000 7.064


<r2> (average value of r2) Å2
<r2> 21.548
(<r2>)1/2 4.642