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

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-51.936316
Energy at 298.15K-51.939171
HF Energy-51.936316
Nuclear repulsion energy24.652966
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 PBEPBE/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 2787 2759 0.16      
2 A1 2073 2052 12.13      
3 A1 1335 1321 1.42      
4 A1 1095 1084 0.93      
5 A1 717 709 1.47      
6 A2 1253 1240 0.00      
7 A2 657 650 0.00      
8 B1 2082 2061 46.16      
9 B1 780 772 1.53      
10 B2 2747 2719 20.79      
11 B2 1316 1303 155.88      
12 B2 520 514 24.19      

Unscaled Zero Point Vibrational Energy (zpe) 8680.8 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 8591.4 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 PBEPBE/6-31G(2df,p)
ABC
6.60180 0.83411 0.80593

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.736 -0.120
B2 0.000 -0.736 -0.120
H3 0.899 0.000 0.582
H4 -0.899 0.000 0.582
H5 0.000 1.910 0.019
H6 0.000 -1.910 0.019

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47221.35801.35801.18252.6501
B21.47221.35801.35802.65011.1825
H31.35801.35801.79862.18542.1854
H41.35801.35801.79862.18542.1854
H51.18252.65012.18542.18543.8207
H62.65011.18252.18542.18543.8207

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 57.177 B1 B2 H4 57.177
B1 B2 H6 173.251 B1 H3 B2 65.646
B1 H4 B2 65.646 B2 B1 H3 57.177
B2 B1 H4 57.177 B2 B1 H5 173.251
H3 B1 H4 82.937 H3 B1 H5 118.521
H3 B2 H4 82.937 H3 B2 H6 118.521
H4 B1 H5 118.521 H4 B2 H6 118.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.217      
2 B -0.217      
3 H 0.147      
4 H 0.147      
5 H 0.071      
6 H 0.071      


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 0.980 0.980
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.592 0.000 0.000
y 0.000 -13.813 0.000
z 0.000 0.000 -15.792
Traceless
 xyz
x 1.211 0.000 0.000
y 0.000 0.879 0.000
z 0.000 0.000 -2.089
Polar
3z2-r2-4.179
x2-y20.221
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.496 0.000 0.000
y 0.000 5.704 0.000
z 0.000 0.000 3.177


<r2> (average value of r2) Å2
<r2> 24.152
(<r2>)1/2 4.914