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

using model chemistry: B3LYPultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-52.064798
Energy at 298.15K-52.067235
HF Energy-52.064798
Nuclear repulsion energy22.435122
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 B3LYPultrafine/aug-cc-pVTZ
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 2573 2489 0.00      
2 A1 1198 1159 0.00      
3 A1 870 842 0.00      
4 B1 567 548 0.00      
5 B2 2553 2470 60.09      
6 B2 1137 1100 2.15      
7 E 2616 2531 79.85      
7 E 2616 2531 79.85      
8 E 994 962 25.15      
8 E 994 962 25.15      
9 E 391 378 3.89      
9 E 391 378 3.89      

Unscaled Zero Point Vibrational Energy (zpe) 8450.1 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 8175.5 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 B3LYPultrafine/aug-cc-pVTZ
ABC
4.07896 0.67191 0.67191

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.816
B2 0.000 0.000 -0.816
H3 0.000 1.015 1.446
H4 0.000 -1.015 1.446
H5 1.015 0.000 -1.446
H6 -1.015 0.000 -1.446

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63191.19471.19472.47952.4795
B21.63192.47952.47951.19471.1947
H31.19472.47952.02983.22913.2291
H41.19472.47952.02983.22913.2291
H52.47951.19473.22913.22912.0298
H62.47951.19473.22913.22912.0298

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 121.845 B1 B2 H6 121.845
B2 B1 H3 121.845 B2 B1 H4 121.845
H3 B1 H4 116.311 H5 B2 H6 116.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.056      
2 B 0.056      
3 H -0.028      
4 H -0.028      
5 H -0.028      
6 H -0.028      


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 -14.722 0.000 0.000
y 0.000 -14.722 0.000
z 0.000 0.000 -16.731
Traceless
 xyz
x 1.005 0.000 0.000
y 0.000 1.005 0.000
z 0.000 0.000 -2.009
Polar
3z2-r2-4.019
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 4.210 0.000 0.000
y 0.000 4.210 0.000
z 0.000 0.000 6.060


<r2> (average value of r2) Å2
<r2> 28.723
(<r2>)1/2 5.359