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

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-51.708074
Energy at 298.15K-51.710047
HF Energy-51.563489
Nuclear repulsion energy24.494767
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 CISD/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 2845 2668 0.23      
2 A1 2033 1906 33.44      
3 A1 1352 1267 5.74      
4 A1 1154 1083 12.92      
5 A1 691 648 1.82      
6 A2 1206 1131 0.00      
7 A2 240 225 0.00      
8 B1 2010 1885 93.50      
9 B1 772 724 0.56      
10 B2 2803 2628 44.38      
11 B2 1277 1197 210.17      
12 B2 108 101 71.09      

Unscaled Zero Point Vibrational Energy (zpe) 8244.0 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 7731.2 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 CISD/6-31G
ABC
6.45039 0.82754 0.79379

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.741 -0.115
B2 0.000 -0.741 -0.115
H3 0.929 0.000 0.569
H4 -0.929 0.000 0.569
H5 0.000 1.915 0.007
H6 0.000 -1.915 0.007

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48281.37171.37171.18042.6596
B21.48281.37171.37172.65961.1804
H31.37171.37171.85812.20172.2017
H41.37171.37171.85812.20172.2017
H51.18042.65962.20172.20173.8308
H62.65961.18042.20172.20173.8308

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 57.284 B1 B2 H4 57.284
B1 B2 H6 174.031 B1 H3 B2 65.432
B1 H4 B2 65.432 B2 B1 H3 57.284
B2 B1 H4 57.284 B2 B1 H5 174.031
H3 B1 H4 85.266 H3 B1 H5 119.054
H3 B2 H4 85.266 H3 B2 H6 119.054
H4 B1 H5 119.054 H4 B2 H6 119.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability