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

using model chemistry: TPSSh/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 TPSSh/6-311G**
 hartrees
Energy at 0K-52.060352
Energy at 298.15K-52.062776
HF Energy-52.060352
Nuclear repulsion energy22.330317
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 TPSSh/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 2567 2567 0.00      
2 A1 1206 1206 0.00      
3 A1 865 865 0.00      
4 B1 560 560 0.00      
5 B2 2545 2545 68.88      
6 B2 1146 1146 2.95      
7 E 2609 2609 88.56      
7 E 2609 2609 88.56      
8 E 994 994 24.82      
8 E 994 994 24.82      
9 E 388 388 3.00      
9 E 388 388 3.00      

Unscaled Zero Point Vibrational Energy (zpe) 8435.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8435.9 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 TPSSh/6-311G**
ABC
4.05636 0.66451 0.66451

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.818
B2 0.000 0.000 -0.818
H3 0.000 1.015 1.457
H4 0.000 -1.015 1.457
H5 1.015 0.000 -1.457
H6 -1.015 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63611.19951.19952.49112.4911
B21.63612.49112.49111.19951.1995
H31.19952.49112.03073.24823.2482
H41.19952.49112.03073.24823.2482
H52.49111.19953.24823.24822.0307
H62.49111.19953.24823.24822.0307

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 122.173 B1 B2 H6 122.173
B2 B1 H3 122.173 B2 B1 H4 122.173
H3 B1 H4 115.654 H5 B2 H6 115.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.016      
2 B -0.016      
3 H 0.008      
4 H 0.008      
5 H 0.008      
6 H 0.008      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.682 0.000 0.000
y 0.000 3.682 0.000
z 0.000 0.000 5.886


<r2> (average value of r2) Å2
<r2> 28.832
(<r2>)1/2 5.370