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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: PBE1PBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-51.954700
Energy at 298.15K-51.957624
HF Energy-51.954700
Nuclear repulsion energy24.794529
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2846 2723 0.22      
2 A1 2128 2036 13.21      
3 A1 1372 1313 1.85      
4 A1 1130 1081 1.26      
5 A1 741 709 1.29      
6 A2 1294 1239 0.00      
7 A2 677 648 0.00      
8 B1 2139 2047 50.11      
9 B1 801 766 1.87      
10 B2 2805 2684 24.78      
11 B2 1367 1308 186.51      
12 B2 562 538 29.83      

Unscaled Zero Point Vibrational Energy (zpe) 8930.7 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 8546.7 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/6-31G(2df,p)
ABC
6.68014 0.84421 0.81517

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.118
B2 0.000 -0.731 -0.118
H3 0.896 0.000 0.579
H4 -0.896 0.000 0.579
H5 0.000 1.901 0.009
H6 0.000 -1.901 0.009

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46281.35031.35031.17642.6354
B21.46281.35031.35032.63541.1764
H31.35031.35031.79172.17762.1776
H41.35031.35031.79172.17762.1776
H51.17642.63542.17762.17763.8020
H62.63541.17642.17762.17763.8020

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.205 B1 B2 H4 57.205
B1 B2 H6 173.838 B1 H3 B2 65.590
B1 H4 B2 65.590 B2 B1 H3 57.205
B2 B1 H4 57.205 B2 B1 H5 173.838
H3 B1 H4 83.121 H3 B1 H5 118.887
H3 B2 H4 83.121 H3 B2 H6 118.887
H4 B1 H5 118.887 H4 B2 H6 118.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.224      
2 B -0.224      
3 H 0.146      
4 H 0.146      
5 H 0.078      
6 H 0.078      


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 0.957 0.957
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.589 0.000 0.000
y 0.000 -13.742 0.000
z 0.000 0.000 -15.818
Traceless
 xyz
x 1.191 0.000 0.000
y 0.000 0.962 0.000
z 0.000 0.000 -2.153
Polar
3z2-r2-4.306
x2-y20.153
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.456 0.000 0.000
y 0.000 5.591 0.000
z 0.000 0.000 3.142


<r2> (average value of r2) Å2
<r2> 23.975
(<r2>)1/2 4.896