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

using model chemistry: ROHF/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 ROHF/6-31G**
 hartrees
Energy at 0K-50.418899
Energy at 298.15K-50.419092
HF Energy-50.418899
Nuclear repulsion energy15.466629
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 ROHF/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 2946 2518 0.00      
2 Σg 1353 1156 0.00      
3 Σu 2904 2482 45.26      
4 Πg 640 547 0.00      
4 Πg 640 547 0.00      
5 Πu 688 588 5.03      
5 Πu 688 588 5.03      

Unscaled Zero Point Vibrational Energy (zpe) 4929.6 cm-1
Scaled (by 0.8546) Zero Point Vibrational Energy (zpe) 4212.8 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 ROHF/6-31G**
B
0.85127

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.750
B2 0.000 0.000 -0.750
H3 0.000 0.000 1.920
H4 0.000 0.000 -1.920

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.49941.17002.6693
B21.49942.66931.1700
H31.17002.66933.8393
H42.66931.17003.8393

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 ROHF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.037      
2 B -0.037      
3 H 0.037      
4 H 0.037      


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 -13.620 0.000 0.000
y 0.000 -13.620 0.000
z 0.000 0.000 -12.679
Traceless
 xyz
x -0.470 0.000 0.000
y 0.000 -0.470 0.000
z 0.000 0.000 0.941
Polar
3z2-r21.882
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 21.302
(<r2>)1/2 4.615