return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/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 wB97X-D/CEP-31G*
 hartrees
Energy at 0K-7.917300
Energy at 298.15K-7.919749
HF Energy-7.917300
Nuclear repulsion energy 
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 wB97X-D/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 2580 2580 0.00      
2 A1 1212 1212 0.00      
3 A1 869 869 0.00      
4 B1 501 501 0.00      
5 B2 2555 2555 121.75      
6 B2 1127 1127 9.83      
7 E 2621 2621 135.01      
7 E 2621 2621 135.01      
8 E 996 996 19.45      
8 E 996 996 19.45      
9 E 436 436 0.31      
9 E 436 436 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 8474.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8474.8 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 wB97X-D/CEP-31G*
ABC
3.97529 0.62953 0.62953

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.846
B2 0.000 0.000 -0.846
H3 0.000 1.026 1.487
H4 0.000 -1.026 1.487
H5 1.026 0.000 -1.487
H6 -1.026 0.000 -1.487

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.69131.20961.20962.54812.5481
B21.69132.54812.54811.20961.2096
H31.20962.54812.05133.30873.3087
H41.20962.54812.05133.30873.3087
H52.54811.20963.30873.30872.0513
H62.54811.20963.30873.30872.0513

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 122.015 B1 B2 H6 122.015
B2 B1 H3 122.015 B2 B1 H4 122.015
H3 B1 H4 115.970 H5 B2 H6 115.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.216      
2 B -0.216      
3 H 0.108      
4 H 0.108      
5 H 0.108      
6 H 0.108      


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 -13.862 0.000 0.000
y 0.000 -13.862 0.000
z 0.000 0.000 -16.153
Traceless
 xyz
x 1.146 0.000 0.000
y 0.000 1.146 0.000
z 0.000 0.000 -2.292
Polar
3z2-r2-4.583
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 2.558 0.000 0.000
y 0.000 2.558 0.000
z 0.000 0.000 5.091


<r2> (average value of r2) Å2
<r2> 26.476
(<r2>)1/2 5.146