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: B3LYP/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYP/aug-cc-pCVTZ
 hartrees
Energy at 0K-52.066189
Energy at 298.15K 
HF Energy-52.066189
Nuclear repulsion energy22.433652
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 B3LYP/aug-cc-pCVTZ
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 2571 2571 0.00      
2 A1 1198 1198 0.00      
3 A1 869 869 0.00      
4 B1 566 566 0.00      
5 B2 2551 2551 60.19      
6 B2 1137 1137 2.07      
7 E 2613 2613 80.02      
7 E 2613 2613 80.02      
8 E 993 993 25.21      
8 E 993 993 25.21      
9 E 392 392 3.85      
9 E 392 392 3.85      

Unscaled Zero Point Vibrational Energy (zpe) 8443.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8443.9 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 B3LYP/aug-cc-pCVTZ
ABC
4.08168 0.67170 0.67170

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pCVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.813
B2 0.000 0.000 -0.813
H3 0.000 1.012 1.449
H4 0.000 -1.012 1.449
H5 1.012 0.000 -1.449
H6 -1.012 0.000 -1.449

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62651.19551.19552.47882.4788
B21.62652.47882.47881.19551.1955
H31.19552.47882.02443.23303.2330
H41.19552.47882.02443.23303.2330
H52.47881.19553.23303.23302.0244
H62.47881.19553.23303.23302.0244

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 122.151 B1 B2 H6 122.151
B2 B1 H3 122.151 B2 B1 H4 122.151
H3 B1 H4 115.699 H5 B2 H6 115.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.021      
2 B -0.021      
3 H 0.010      
4 H 0.010      
5 H 0.010      
6 H 0.010      


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 -14.719 0.000 0.000
y 0.000 -14.719 0.000
z 0.000 0.000 -16.722
Traceless
 xyz
x 1.001 0.000 0.000
y 0.000 1.001 0.000
z 0.000 0.000 -2.003
Polar
3z2-r2-4.005
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 4.209 0.000 0.000
y 0.000 4.209 0.000
z 0.000 0.000 6.060


<r2> (average value of r2) Å2
<r2> 28.726
(<r2>)1/2 5.360