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

using model chemistry: PBE1PBE/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 PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-50.699353
Energy at 298.15K-50.699385
HF Energy-50.699353
Nuclear repulsion energy15.377204
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 PBE1PBE/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 2816 2816 0.00      
2 Σg 1265 1265 0.00      
3 Σu 2775 2775 24.61      
4 Πg 572 572 0.00      
4 Πg 572 572 0.00      
5 Πu 605 605 0.06      
5 Πu 605 605 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 4605.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4605.4 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 PBE1PBE/6-311+G(3df,2p)
B
0.84132

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.754
B2 0.000 0.000 -0.754
H3 0.000 0.000 1.930
H4 0.000 0.000 -1.930

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50841.17632.6847
B21.50842.68471.1763
H31.17632.68473.8610
H42.68471.17633.8610

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 PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.209      
2 B -0.209      
3 H 0.209      
4 H 0.209      


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 -14.123 0.000 0.000
y 0.000 -14.123 0.000
z 0.000 0.000 -12.262
Traceless
 xyz
x -0.931 0.000 0.000
y 0.000 -0.931 0.000
z 0.000 0.000 1.861
Polar
3z2-r23.723
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 4.284 0.000 0.000
y 0.000 4.284 0.000
z 0.000 0.000 7.182


<r2> (average value of r2) Å2
<r2> 21.576
(<r2>)1/2 4.645