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

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-51.888001
Energy at 298.15K-51.890928
HF Energy-51.625741
Nuclear repulsion energy24.823408
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/cc-pVTZ
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 2837 2711 0.05      
2 A1 2127 2032 17.25      
3 A1 1359 1298 2.70      
4 A1 1127 1077 3.01      
5 A1 739 706 3.03      
6 A2 1325 1266 0.00      
7 A2 671 641 0.00      
8 B1 2126 2031 50.15      
9 B1 806 770 2.04      
10 B2 2796 2672 39.68      
11 B2 1399 1337 208.19      
12 B2 554 530 29.07      

Unscaled Zero Point Vibrational Energy (zpe) 8933.4 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 8535.8 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/cc-pVTZ
ABC
6.75704 0.84468 0.81363

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.733 -0.115
B2 0.000 -0.733 -0.115
H3 0.899 0.000 0.567
H4 -0.899 0.000 0.567
H5 0.000 1.899 0.009
H6 0.000 -1.899 0.009

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46551.34521.34521.17272.6346
B21.46551.34521.34522.63461.1727
H31.34521.34521.79752.17362.1736
H41.34521.34521.79752.17362.1736
H51.17272.63462.17362.17363.7977
H62.63461.17272.17362.17363.7977

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 56.993 B1 B2 H4 56.993
B1 B2 H6 173.923 B1 H3 B2 66.013
B1 H4 B2 66.013 B2 B1 H3 56.993
B2 B1 H4 56.993 B2 B1 H5 173.923
H3 B1 H4 83.845 H3 B1 H5 119.210
H3 B2 H4 83.845 H3 B2 H6 119.210
H4 B1 H5 119.210 H4 B2 H6 119.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability