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

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-51.610183
Energy at 298.15K-51.613099
HF Energy-51.610183
Nuclear repulsion energy24.818847
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 HF/6-31+G**
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 2941 2659 0.34      
2 A1 2157 1951 60.90      
3 A1 1424 1288 6.48      
4 A1 1231 1113 13.78      
5 A1 790 714 5.04      
6 A2 1289 1166 0.00      
7 A2 579 524 0.00      
8 B1 2162 1955 120.84      
9 B1 856 774 1.85      
10 B2 2900 2622 74.02      
11 B2 1418 1282 303.06      
12 B2 559 506 75.15      

Unscaled Zero Point Vibrational Energy (zpe) 9153.2 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 8276.4 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 HF/6-31+G**
ABC
6.62969 0.84857 0.81745

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.730 -0.112
B2 0.000 -0.730 -0.112
H3 0.905 0.000 0.583
H4 -0.905 0.000 0.583
H5 0.000 1.896 -0.023
H6 0.000 -1.896 -0.023

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45971.35421.35421.16932.6271
B21.45971.35421.35422.62711.1693
H31.35421.35421.80922.18602.1860
H41.35421.35421.80922.18602.1860
H51.16932.62712.18602.18603.7915
H62.62711.16932.18602.18603.7915

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 57.387 B1 B2 H4 57.387
B1 B2 H6 175.609 B1 H3 B2 65.226
B1 H4 B2 65.226 B2 B1 H3 57.387
B2 B1 H4 57.387 B2 B1 H5 175.609
H3 B1 H4 83.829 H3 B1 H5 119.874
H3 B2 H4 83.829 H3 B2 H6 119.874
H4 B1 H5 119.874 H4 B2 H6 119.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.022      
2 B -0.022      
3 H -0.008      
4 H -0.008      
5 H 0.030      
6 H 0.030      


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 0.831 0.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.287 0.000 0.000
y 0.000 -14.515 0.000
z 0.000 0.000 -16.882
Traceless
 xyz
x 1.411 0.000 0.000
y 0.000 1.070 0.000
z 0.000 0.000 -2.482
Polar
3z2-r2-4.963
x2-y20.227
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.453 0.000 0.000
y 0.000 5.852 0.000
z 0.000 0.000 3.672


<r2> (average value of r2) Å2
<r2> 24.468
(<r2>)1/2 4.947