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

using model chemistry: HF/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-7.641572
Energy at 298.15K-7.644139
HF Energy-7.641572
Nuclear repulsion energy11.706661
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/CEP-31G*
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 2683 2409 0.00      
2 A1 1309 1175 0.00      
3 A1 888 797 0.00      
4 B1 464 416 0.00      
5 B2 2652 2382 195.47      
6 B2 1227 1102 42.72      
7 E 2715 2438 218.26      
7 E 2715 2438 218.26      
8 E 1066 957 28.54      
8 E 1066 957 28.54      
9 E 497 446 5.10      
9 E 497 446 5.10      

Unscaled Zero Point Vibrational Energy (zpe) 8888.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 7982.2 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 HF/CEP-31G*
ABC
4.00283 0.62145 0.62145

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.855
B2 0.000 0.000 -0.855
H3 0.000 1.022 1.489
H4 0.000 -1.022 1.489
H5 1.022 0.000 -1.489
H6 -1.022 0.000 -1.489

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.70951.20281.20282.55672.5567
B21.70952.55672.55671.20281.2028
H31.20282.55672.04423.30983.3098
H41.20282.55672.04423.30983.3098
H52.55671.20283.30983.30982.0442
H62.55671.20283.30983.30982.0442

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 121.811 B1 B2 H6 121.811
B2 B1 H3 121.811 B2 B1 H4 121.811
H3 B1 H4 116.378 H5 B2 H6 116.378
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.110      
2 B -0.110      
3 H 0.055      
4 H 0.055      
5 H 0.055      
6 H 0.055      


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 -14.015 0.000 0.000
y 0.000 -14.015 0.000
z 0.000 0.000 -16.940
Traceless
 xyz
x 1.462 0.000 0.000
y 0.000 1.462 0.000
z 0.000 0.000 -2.925
Polar
3z2-r2-5.850
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 2.412 0.000 0.000
y 0.000 2.412 0.000
z 0.000 0.000 4.411


<r2> (average value of r2) Å2
<r2> 26.790
(<r2>)1/2 5.176