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: HF/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 HF/6-31G
 hartrees
Energy at 0K-51.564393
Energy at 298.15K 
HF Energy-51.564393
Nuclear repulsion energy24.645816
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 HF/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 2975 2686 0.59      
2 A1 2051 1852 58.24      
3 A1 1409 1272 9.68      
4 A1 1244 1124 38.94      
5 A1 778 702 2.89      
6 A2 1202 1085 0.00      
7 A2 191i 172i 0.00      
8 B1 2018 1822 151.18      
9 B1 859 776 0.18      
10 B2 2932 2647 62.08      
11 B2 1274 1150 281.21      
12 B2 332 299 178.71      

Unscaled Zero Point Vibrational Energy (zpe) 8440.7 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 7621.1 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 HF/6-31G
ABC
6.35671 0.84145 0.81014

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.734 -0.110
B2 0.000 -0.734 -0.110
H3 0.922 0.000 0.603
H4 -0.922 0.000 0.603
H5 0.000 1.896 -0.054
H6 0.000 -1.896 -0.054

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46701.37711.37711.16412.6304
B21.46701.37711.37712.63041.1641
H31.37711.37711.84382.20852.2085
H41.37711.37711.84382.20852.2085
H51.16412.63042.20852.20853.7925
H62.63041.16412.20852.20853.7925

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 57.814 B1 B2 H4 57.814
B1 B2 H6 177.240 B1 H3 B2 64.371
B1 H4 B2 64.371 B2 B1 H3 57.814
B2 B1 H4 57.814 B2 B1 H5 177.240
H3 B1 H4 84.052 H3 B1 H5 120.472
H3 B2 H4 84.052 H3 B2 H6 120.472
H4 B1 H5 120.472 H4 B2 H6 120.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.048      
2 B -0.048      
3 H -0.045      
4 H -0.045      
5 H 0.093      
6 H 0.093      


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 0.769 0.769
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.542 0.000 0.000
y 0.000 -14.585 0.000
z 0.000 0.000 -16.651
Traceless
 xyz
x 1.076 0.000 0.000
y 0.000 1.012 0.000
z 0.000 0.000 -2.087
Polar
3z2-r2-4.175
x2-y20.043
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.295 0.000 0.000
y 0.000 5.533 0.000
z 0.000 0.000 2.683


<r2> (average value of r2) Å2
<r2> 24.657
(<r2>)1/2 4.966