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: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-51.331024
Energy at 298.15K-51.333565
HF Energy-51.331024
Nuclear repulsion energy24.964638
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 B1B95/STO-3G
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 3226 2849 0.28      
2 A1 2373 2095 4.45      
3 A1 1536 1357 9.42      
4 A1 1399 1235 2.95      
5 A1 832 734 7.64      
6 A2 1247 1101 0.00      
7 A2 437 386 0.00      
8 B1 2397 2117 16.57      
9 B1 884 781 19.22      
10 B2 3171 2800 17.85      
11 B2 1300 1148 160.95      
12 B2 404 357 141.45      

Unscaled Zero Point Vibrational Energy (zpe) 9602.0 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 8478.6 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 B1B95/STO-3G
ABC
6.41466 0.86588 0.83912

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.719 -0.116
B2 0.000 -0.719 -0.116
H3 0.898 0.000 0.621
H4 -0.898 0.000 0.621
H5 0.000 1.874 -0.040
H6 0.000 -1.874 -0.040

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.43831.36621.36621.15712.5941
B21.43831.36621.36622.59411.1571
H31.36621.36621.79542.18042.1804
H41.36621.36621.79542.18042.1804
H51.15712.59412.18042.18043.7476
H62.59411.15712.18042.18043.7476

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 58.236 B1 B2 H4 58.236
B1 B2 H6 176.238 B1 H3 B2 63.528
B1 H4 B2 63.528 B2 B1 H3 58.236
B2 B1 H4 58.236 B2 B1 H5 176.238
H3 B1 H4 82.159 H3 B1 H5 119.333
H3 B2 H4 82.159 H3 B2 H6 119.333
H4 B1 H5 119.333 H4 B2 H6 119.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.021      
2 B -0.021      
3 H 0.029      
4 H 0.029      
5 H -0.009      
6 H -0.009      


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 1.151 1.151
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.743 0.000 0.000
y 0.000 -13.637 0.000
z 0.000 0.000 -13.890
Traceless
 xyz
x 1.020 0.000 0.000
y 0.000 -0.320 0.000
z 0.000 0.000 -0.700
Polar
3z2-r2-1.399
x2-y20.894
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.395 0.000 0.000
y 0.000 3.154 0.000
z 0.000 0.000 1.030


<r2> (average value of r2) Å2
<r2> 23.099
(<r2>)1/2 4.806