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

using model chemistry: B1B95/6-311+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 B1B95/6-311+G(3df,2p)
 hartrees
Energy at 0K-52.000493
Energy at 298.15K-52.002889
HF Energy-52.000493
Nuclear repulsion energy22.458633
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 B1B95/6-311+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 2576 2576 0.00      
2 A1 1195 1195 0.00      
3 A1 873 873 0.00      
4 B1 573 573 0.00      
5 B2 2554 2554 61.02      
6 B2 1129 1129 2.09      
7 E 2621 2621 78.68      
7 E 2621 2621 78.68      
8 E 981 981 24.91      
8 E 981 981 24.91      
9 E 373 373 3.50      
9 E 373 373 3.50      

Unscaled Zero Point Vibrational Energy (zpe) 8424.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8424.4 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 B1B95/6-311+G(3df,2p)
ABC
4.08114 0.67394 0.67394

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311+G(3df,2p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.812
B2 0.000 0.000 -0.812
H3 0.000 1.012 1.447
H4 0.000 -1.012 1.447
H5 1.012 0.000 -1.447
H6 -1.012 0.000 -1.447

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62331.19521.19522.47532.4753
B21.62332.47532.47531.19521.1952
H31.19522.47532.02453.22913.2291
H41.19522.47532.02453.22913.2291
H52.47531.19523.22913.22912.0245
H62.47531.19523.22913.22912.0245

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 122.124 B1 B2 H6 122.124
B2 B1 H3 122.124 B2 B1 H4 122.124
H3 B1 H4 115.753 H5 B2 H6 115.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.230      
2 B -0.230      
3 H 0.115      
4 H 0.115      
5 H 0.115      
6 H 0.115      


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 -14.628 0.000 0.000
y 0.000 -14.628 0.000
z 0.000 0.000 -16.491
Traceless
 xyz
x 0.931 0.000 0.000
y 0.000 0.931 0.000
z 0.000 0.000 -1.863
Polar
3z2-r2-3.726
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 4.154 0.000 0.000
y 0.000 4.154 0.000
z 0.000 0.000 6.028


<r2> (average value of r2) Å2
<r2> 28.588
(<r2>)1/2 5.347