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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-51.641212
Energy at 298.15K-51.643792
HF Energy-51.641212
Nuclear repulsion energy22.117155
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/6-311G*
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 2649 2396 0.00      
2 A1 1306 1182 0.00      
3 A1 863 780 0.00      
4 B1 486 440 0.00      
5 B2 2623 2372 134.25      
6 B2 1246 1127 32.54      
7 E 2690 2433 152.46      
7 E 2690 2433 152.46      
8 E 1060 958 33.83      
8 E 1060 958 33.83      
9 E 490 443 11.87      
9 E 490 443 11.87      

Unscaled Zero Point Vibrational Energy (zpe) 8825.9 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 7982.1 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/6-311G*
ABC
4.04256 0.64368 0.64368

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.837
B2 0.000 0.000 -0.837
H3 0.000 1.017 1.468
H4 0.000 -1.017 1.468
H5 1.017 0.000 -1.468
H6 -1.017 0.000 -1.468

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67381.19671.19672.51892.5189
B21.67382.51892.51891.19671.1967
H31.19672.51892.03413.26853.2685
H41.19672.51892.03413.26853.2685
H52.51891.19673.26853.26852.0341
H62.51891.19673.26853.26852.0341

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.800 B1 B2 H6 121.800
B2 B1 H3 121.800 B2 B1 H4 121.800
H3 B1 H4 116.400 H5 B2 H6 116.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.123      
2 B -0.123      
3 H 0.062      
4 H 0.062      
5 H 0.062      
6 H 0.062      


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 -14.887 0.000 0.000
y 0.000 -14.887 0.000
z 0.000 0.000 -17.500
Traceless
 xyz
x 1.307 0.000 0.000
y 0.000 1.307 0.000
z 0.000 0.000 -2.613
Polar
3z2-r2-5.227
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 3.477 0.000 0.000
y 0.000 3.477 0.000
z 0.000 0.000 4.970


<r2> (average value of r2) Å2
<r2> 29.599
(<r2>)1/2 5.440