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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-51.798938
Energy at 298.15K-51.801711
HF Energy-51.601829
Nuclear repulsion energy24.826694
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 CCD/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 2871 2718 0.38      
2 A1 2186 2069 18.12      
3 A1 1403 1328 2.94      
4 A1 1182 1119 1.65      
5 A1 719 681 0.95      
6 A2 1366 1293 0.00      
7 A2 577 546 0.00      
8 B1 2192 2074 60.64      
9 B1 794 752 1.81      
10 B2 2830 2679 37.83      
11 B2 1430 1353 201.64      
12 B2 449 425 23.93      

Unscaled Zero Point Vibrational Energy (zpe) 8999.2 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 8517.7 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 CCD/6-31G*
ABC
6.73625 0.84771 0.81432

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.116
B2 0.000 -0.731 -0.116
H3 0.907 0.000 0.554
H4 -0.907 0.000 0.554
H5 0.000 1.902 0.026
H6 0.000 -1.902 0.026

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46111.34401.34401.17992.6363
B21.46111.34401.34402.63631.1799
H31.34401.34401.81452.17252.1725
H41.34401.34401.81452.17252.1725
H51.17992.63632.17252.17253.8038
H62.63631.17992.17252.17253.8038

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 57.072 B1 B2 H4 57.072
B1 B2 H6 173.104 B1 H3 B2 65.856
B1 H4 B2 65.856 B2 B1 H3 57.072
B2 B1 H4 57.072 B2 B1 H5 173.104
H3 B1 H4 84.917 H3 B1 H5 118.670
H3 B2 H4 84.917 H3 B2 H6 118.670
H4 B1 H5 118.670 H4 B2 H6 118.670
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability