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

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-52.045130
Energy at 298.15K-52.048021
HF Energy-52.045130
Nuclear repulsion energy24.824023
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 B3LYP/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 2855 2755 0.25      
2 A1 2086 2013 18.36      
3 A1 1370 1322 2.11      
4 A1 1141 1101 2.65      
5 A1 748 722 1.08      
6 A2 1245 1202 0.00      
7 A2 637 614 0.00      
8 B1 2091 2018 64.71      
9 B1 811 782 1.97      
10 B2 2814 2716 27.21      
11 B2 1342 1295 187.76      
12 B2 541 522 37.58      

Unscaled Zero Point Vibrational Energy (zpe) 8839.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 8530.2 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 B3LYP/6-31G(2df,p)
ABC
6.66085 0.84724 0.81781

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.730 -0.116
B2 0.000 -0.730 -0.116
H3 0.897 0.000 0.583
H4 -0.897 0.000 0.583
H5 0.000 1.896 -0.004
H6 0.000 -1.896 -0.004

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46051.35171.35171.17152.6290
B21.46051.35171.35172.62901.1715
H31.35171.35171.79492.17852.1785
H41.35171.35171.79492.17852.1785
H51.17152.62902.17852.17853.7927
H62.62901.17152.17852.17853.7927

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 57.301 B1 B2 H4 57.301
B1 B2 H6 174.504 B1 H3 B2 65.398
B1 H4 B2 65.398 B2 B1 H3 57.301
B2 B1 H4 57.301 B2 B1 H5 174.504
H3 B1 H4 83.198 H3 B1 H5 119.223
H3 B2 H4 83.198 H3 B2 H6 119.223
H4 B1 H5 119.223 H4 B2 H6 119.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.176      
2 B -0.176      
3 H 0.115      
4 H 0.115      
5 H 0.061      
6 H 0.061      


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 0.910 0.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.573 0.000 0.000
y 0.000 -13.949 0.000
z 0.000 0.000 -15.730
Traceless
 xyz
x 1.267 0.000 0.000
y 0.000 0.702 0.000
z 0.000 0.000 -1.969
Polar
3z2-r2-3.938
x2-y20.376
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.430 0.000 0.000
y 0.000 5.521 0.000
z 0.000 0.000 3.105


<r2> (average value of r2) Å2
<r2> 23.955
(<r2>)1/2 4.894