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 HBHHBH (Diborane(4) C2V)

using model chemistry: TPSSh/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G
 hartrees
Energy at 0K-52.019018
Energy at 298.15K-52.021645
HF Energy-52.019018
Nuclear repulsion energy24.593470
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/6-31G
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 2882 2773 0.03      
2 A1 2044 1967 35.83      
3 A1 1350 1298 5.08      
4 A1 1143 1100 12.67      
5 A1 729 701 1.79      
6 A2 1198 1153 0.00      
7 A2 511 491 0.00      
8 B1 2028 1951 100.39      
9 B1 813 782 0.71      
10 B2 2841 2733 42.62      
11 B2 1245 1198 186.90      
12 B2 358 344 82.80      

Unscaled Zero Point Vibrational Energy (zpe) 8570.4 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 8245.6 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/6-31G
ABC
6.46103 0.83354 0.80259

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.738 -0.117
B2 0.000 -0.738 -0.117
H3 0.917 0.000 0.585
H4 -0.917 0.000 0.585
H5 0.000 1.904 -0.001
H6 0.000 -1.904 -0.001

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47661.37031.37031.17152.6449
B21.47661.37031.37032.64491.1715
H31.37031.37031.83382.19302.1930
H41.37031.37031.83382.19302.1930
H51.17152.64492.19302.19303.8081
H62.64491.17152.19302.19303.8081

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.400 B1 B2 H4 57.400
B1 B2 H6 174.329 B1 H3 B2 65.201
B1 H4 B2 65.201 B2 B1 H3 57.400
B2 B1 H4 57.400 B2 B1 H5 174.329
H3 B1 H4 83.996 H3 B1 H5 119.049
H3 B2 H4 83.996 H3 B2 H6 119.049
H4 B1 H5 119.049 H4 B2 H6 119.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.080      
2 B -0.080      
3 H 0.023      
4 H 0.023      
5 H 0.057      
6 H 0.057      


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 1.028 1.028
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 3.290 0.000 0.000
y 0.000 5.632 0.000
z 0.000 0.000 2.695


<r2> (average value of r2) Å2
<r2> 24.425
(<r2>)1/2 4.942