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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-52.018934
Energy at 298.15K-52.021842
HF Energy-52.018934
Nuclear repulsion energy24.788969
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 B3PW91/6-31G(2df,p)
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 2841 2732 0.23      
2 A1 2110 2028 14.83      
3 A1 1366 1314 1.93      
4 A1 1130 1086 1.71      
5 A1 740 712 1.26      
6 A2 1274 1225 0.00      
7 A2 664 639 0.00      
8 B1 2119 2037 54.74      
9 B1 801 770 1.84      
10 B2 2801 2693 27.23      
11 B2 1352 1300 184.46      
12 B2 552 530 31.78      

Unscaled Zero Point Vibrational Energy (zpe) 8874.6 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 8532.1 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 B3PW91/6-31G(2df,p)
ABC
6.66802 0.84401 0.81497

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.117
B2 0.000 -0.732 -0.117
H3 0.896 0.000 0.581
H4 -0.896 0.000 0.581
H5 0.000 1.901 0.006
H6 0.000 -1.901 0.006

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46321.35151.35151.17552.6350
B21.46321.35151.35152.63501.1755
H31.35151.35151.79302.17852.1785
H41.35151.35151.79302.17852.1785
H51.17552.63502.17852.17853.8011
H62.63501.17552.17852.17853.8011

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 57.226 B1 B2 H4 57.226
B1 B2 H6 173.964 B1 H3 B2 65.548
B1 H4 B2 65.548 B2 B1 H3 57.226
B2 B1 H4 57.226 B2 B1 H5 173.964
H3 B1 H4 83.112 H3 B1 H5 118.947
H3 B2 H4 83.112 H3 B2 H6 118.947
H4 B1 H5 118.947 H4 B2 H6 118.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.205      
2 B -0.205      
3 H 0.138      
4 H 0.138      
5 H 0.067      
6 H 0.067      


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 0.942 0.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.558 0.000 0.000
y 0.000 -13.751 0.000
z 0.000 0.000 -15.761
Traceless
 xyz
x 1.198 0.000 0.000
y 0.000 0.909 0.000
z 0.000 0.000 -2.106
Polar
3z2-r2-4.213
x2-y20.193
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.469 0.000 0.000
y 0.000 5.603 0.000
z 0.000 0.000 3.148


<r2> (average value of r2) Å2
<r2> 23.963
(<r2>)1/2 4.895