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

using model chemistry: ROHF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-50.434043
Energy at 298.15K-50.434256
HF Energy-50.434043
Nuclear repulsion energy15.485262
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/6-311+G(3df,2p)
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 2917 2650 0.00      
2 Σg 1327 1206 0.00      
3 Σu 2878 2614 39.37      
4 Πg 655 595 0.00      
4 Πg 655 595 0.00      
5 Πu 685 622 0.00      
5 Πu 685 622 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4900.2 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 4451.8 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/6-311+G(3df,2p)
B
0.85305

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-311+G(3df,2p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.749
B2 0.000 0.000 -0.749
H3 0.000 0.000 1.917
H4 0.000 0.000 -1.917

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.49821.16762.6658
B21.49822.66581.1676
H31.16762.66583.8334
H42.66581.16763.8334

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/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.253      
2 B -0.253      
3 H 0.253      
4 H 0.253      


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 -14.429 0.000 0.000
y 0.000 -14.429 0.000
z 0.000 0.000 -12.389
Traceless
 xyz
x -1.020 0.000 0.000
y 0.000 -1.020 0.000
z 0.000 0.000 2.040
Polar
3z2-r24.080
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> 21.547
(<r2>)1/2 4.642