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

using model chemistry: B1B95/6-31G*

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 B1B95/6-31G*
 hartrees
Energy at 0K-50.725324
Energy at 298.15K-50.725385
HF Energy-50.725324
Nuclear repulsion energy15.352995
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 B1B95/6-31G*
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 2853 2708 0.00      
2 Σg 1279 1215 0.00      
3 Σu 2813 2671 38.04      
4 Πg 592 562 0.00      
4 Πg 592 562 0.00      
5 Πu 623 592 3.29      
5 Πu 623 592 3.29      

Unscaled Zero Point Vibrational Energy (zpe) 4687.8 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 4450.2 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 B1B95/6-31G*
B
0.83876

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

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 1.934
H4 0.000 0.000 -1.934

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51061.17842.6890
B21.51062.68901.1784
H31.17842.68903.8675
H42.68901.17843.8675

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 B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.071      
2 B -0.071      
3 H 0.071      
4 H 0.071      


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 -13.324 0.000 0.000
y 0.000 -13.324 0.000
z 0.000 0.000 -12.181
Traceless
 xyz
x -0.571 0.000 0.000
y 0.000 -0.571 0.000
z 0.000 0.000 1.143
Polar
3z2-r22.285
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 2.166 0.000 0.000
y 0.000 2.166 0.000
z 0.000 0.000 6.416


<r2> (average value of r2) Å2
<r2> 21.267
(<r2>)1/2 4.612