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

using model chemistry: B3LYP/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 B3LYP/6-311G**
 hartrees
Energy at 0K-52.058977
Energy at 298.15K-52.061398
HF Energy-52.058977
Nuclear repulsion energy22.406781
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/6-311G**
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 2565 2480 0.00      
2 A1 1194 1154 0.00      
3 A1 868 839 0.00      
4 B1 564 545 0.00      
5 B2 2544 2460 60.75      
6 B2 1131 1094 1.98      
7 E 2609 2522 81.83      
7 E 2609 2522 81.83      
8 E 991 958 25.05      
8 E 991 958 25.05      
9 E 387 374 2.86      
9 E 387 374 2.86      

Unscaled Zero Point Vibrational Energy (zpe) 8419.9 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 8140.3 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 B3LYP/6-311G**
ABC
4.06908 0.67015 0.67015

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.814
B2 0.000 0.000 -0.814
H3 0.000 1.014 1.451
H4 0.000 -1.014 1.451
H5 1.014 0.000 -1.451
H6 -1.014 0.000 -1.451

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62861.19691.19692.48142.4814
B21.62862.48142.48141.19691.1969
H31.19692.48142.02753.23613.2361
H41.19692.48142.02753.23613.2361
H52.48141.19693.23613.23612.0275
H62.48141.19693.23613.23612.0275

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 122.116 B1 B2 H6 122.116
B2 B1 H3 122.116 B2 B1 H4 122.116
H3 B1 H4 115.769 H5 B2 H6 115.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.001      
2 B 0.001      
3 H -0.000      
4 H -0.000      
5 H -0.000      
6 H -0.000      


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 -14.730 0.000 0.000
y 0.000 -14.730 0.000
z 0.000 0.000 -16.741
Traceless
 xyz
x 1.006 0.000 0.000
y 0.000 1.006 0.000
z 0.000 0.000 -2.011
Polar
3z2-r2-4.022
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 3.696 0.000 0.000
y 0.000 3.696 0.000
z 0.000 0.000 5.847


<r2> (average value of r2) Å2
<r2> 28.777
(<r2>)1/2 5.364