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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-51.353974
Energy at 298.15K-51.356329
HF Energy-51.353974
Nuclear repulsion energy24.914102
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 B3PW91/STO-3G
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 3215 2845 0.24      
2 A1 2345 2076 5.17      
3 A1 1535 1359 9.16      
4 A1 1398 1237 2.77      
5 A1 829 734 6.99      
6 A2 1216 1076 0.00      
7 A2 305 270 0.00      
8 B1 2372 2099 19.40      
9 B1 884 782 18.09      
10 B2 3160 2796 18.08      
11 B2 1272 1126 149.38      
12 B2 359 318 149.95      

Unscaled Zero Point Vibrational Energy (zpe) 9444.4 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 8358.3 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 B3PW91/STO-3G
ABC
6.34344 0.86420 0.83716

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.719 -0.116
B2 0.000 -0.719 -0.116
H3 0.903 0.000 0.625
H4 -0.903 0.000 0.625
H5 0.000 1.876 -0.044
H6 0.000 -1.876 -0.044

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.43891.37191.37191.15912.5967
B21.43891.37191.37192.59671.1591
H31.37191.37191.80612.18722.1872
H41.37191.37191.80612.18722.1872
H51.15912.59672.18722.18723.7526
H62.59671.15912.18722.18723.7526

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 58.370 B1 B2 H4 58.370
B1 B2 H6 176.453 B1 H3 B2 63.260
B1 H4 B2 63.260 B2 B1 H3 58.370
B2 B1 H4 58.370 B2 B1 H5 176.453
H3 B1 H4 82.337 H3 B1 H5 119.342
H3 B2 H4 82.337 H3 B2 H6 119.342
H4 B1 H5 119.342 H4 B2 H6 119.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.025      
2 B -0.025      
3 H 0.032      
4 H 0.032      
5 H -0.006      
6 H -0.006      


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 1.159 1.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.719 0.000 0.000
y 0.000 -13.584 0.000
z 0.000 0.000 -13.876
Traceless
 xyz
x 1.011 0.000 0.000
y 0.000 -0.287 0.000
z 0.000 0.000 -0.724
Polar
3z2-r2-1.448
x2-y20.866
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.416 0.000 0.000
y 0.000 3.148 0.000
z 0.000 0.000 1.042


<r2> (average value of r2) Å2
<r2> 23.132
(<r2>)1/2 4.810