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

using model chemistry: QCISD(TQ)/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 QCISD(TQ)/6-31G*
 hartrees
Energy at 0K-51.808763
Energy at 298.15K-51.811476
HF Energy-51.601600
Nuclear repulsion energy24.767253
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 QCISD(TQ)/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 2851 2851        
2 A1 2169 2169        
3 A1 1380 1380        
4 A1 1169 1169        
5 A1 708 708        
6 A2 1354 1354        
7 A2 551 551        
8 B1 2171 2171        
9 B1 786 786        
10 B2 2812 2812        
11 B2 1417 1417        
12 B2 413 413        

Unscaled Zero Point Vibrational Energy (zpe) 8890.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8890.2 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 QCISD(TQ)/6-31G*
ABC
6.72598 0.84242 0.80920

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.734 -0.117
B2 0.000 -0.734 -0.117
H3 0.909 0.000 0.551
H4 -0.909 0.000 0.551
H5 0.000 1.905 0.036
H6 0.000 -1.905 0.036

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46741.34551.34551.18132.6432
B21.46741.34551.34552.64321.1813
H31.34551.34551.81722.17252.1725
H41.34551.34551.81722.17252.1725
H51.18132.64322.17252.17253.8100
H62.64321.18132.17252.17253.8100

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 56.955 B1 B2 H4 56.955
B1 B2 H6 172.540 B1 H3 B2 66.089
B1 H4 B2 66.089 B2 B1 H3 56.955
B2 B1 H4 56.955 B2 B1 H5 172.540
H3 B1 H4 84.947 H3 B1 H5 118.437
H3 B2 H4 84.947 H3 B2 H6 118.437
H4 B1 H5 118.437 H4 B2 H6 118.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability