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

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-51.659528
Energy at 298.15K-51.661999
HF Energy-51.659528
Nuclear repulsion energy22.334254
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 HSEh1PBE/3-21G
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 2600 2505 0.00      
2 A1 1203 1159 0.00      
3 A1 899 866 0.00      
4 B1 580 559 0.00      
5 B2 2578 2483 48.56      
6 B2 1148 1106 0.34      
7 E 2653 2556 53.99      
7 E 2653 2556 53.99      
8 E 979 943 28.60      
8 E 979 943 28.60      
9 E 408 393 0.16      
9 E 408 393 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 8543.4 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 8229.8 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 HSEh1PBE/3-21G
ABC
4.02837 0.66782 0.66782

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

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 1.019 1.457
H4 0.000 -1.019 1.457
H5 1.019 0.000 -1.457
H6 -1.019 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62851.20441.20442.48892.4889
B21.62852.48892.48891.20441.2044
H31.20442.48892.03773.24993.2499
H41.20442.48892.03773.24993.2499
H52.48891.20443.24993.24992.0377
H62.48891.20443.24993.24992.0377

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 122.226 B1 B2 H6 122.226
B2 B1 H3 122.226 B2 B1 H4 122.226
H3 B1 H4 115.548 H5 B2 H6 115.548
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.094      
2 B -0.094      
3 H 0.047      
4 H 0.047      
5 H 0.047      
6 H 0.047      


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 -14.826 0.000 0.000
y 0.000 -14.826 0.000
z 0.000 0.000 -16.198
Traceless
 xyz
x 0.686 0.000 0.000
y 0.000 0.686 0.000
z 0.000 0.000 -1.372
Polar
3z2-r2-2.743
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 3.121 0.000 0.000
y 0.000 3.121 0.000
z 0.000 0.000 5.284


<r2> (average value of r2) Å2
<r2> 28.814
(<r2>)1/2 5.368