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

using model chemistry: B3LYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-52.062671
Energy at 298.15K-52.065108
HF Energy-52.062671
Nuclear repulsion energy22.443952
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/6-311+G(3df,2p)
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 2572 2487 0.00      
2 A1 1199 1159 0.00      
3 A1 871 842 0.00      
4 B1 567 548 0.00      
5 B2 2551 2467 59.45      
6 B2 1137 1100 2.04      
7 E 2613 2527 78.98      
7 E 2613 2527 78.98      
8 E 995 962 25.18      
8 E 995 962 25.18      
9 E 392 380 3.94      
9 E 392 380 3.94      

Unscaled Zero Point Vibrational Energy (zpe) 8447.9 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 8169.1 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 B3LYP/6-311+G(3df,2p)
ABC
4.08727 0.67216 0.67216

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.813
B2 0.000 0.000 -0.813
H3 0.000 1.011 1.449
H4 0.000 -1.011 1.449
H5 1.011 0.000 -1.449
H6 -1.011 0.000 -1.449

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62611.19471.19472.47782.4778
B21.62612.47782.47781.19471.1947
H31.19472.47782.02303.23153.2315
H41.19472.47782.02303.23153.2315
H52.47781.19473.23153.23152.0230
H62.47781.19473.23153.23152.0230

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 122.153 B1 B2 H6 122.153
B2 B1 H3 122.153 B2 B1 H4 122.153
H3 B1 H4 115.695 H5 B2 H6 115.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.225      
2 B -0.225      
3 H 0.113      
4 H 0.113      
5 H 0.113      
6 H 0.113      


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 -14.738 0.000 0.000
y 0.000 -14.738 0.000
z 0.000 0.000 -16.704
Traceless
 xyz
x 0.983 0.000 0.000
y 0.000 0.983 0.000
z 0.000 0.000 -1.966
Polar
3z2-r2-3.932
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 4.160 0.000 0.000
y 0.000 4.160 0.000
z 0.000 0.000 6.019


<r2> (average value of r2) Å2
<r2> 28.714
(<r2>)1/2 5.359