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

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-51.801288
Energy at 298.15K-51.804038
HF Energy-51.601795
Nuclear repulsion energy24.803419
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 CCSD/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 2864 2704 0.38      
2 A1 2177 2056 19.95      
3 A1 1395 1317 3.02      
4 A1 1181 1115 1.82      
5 A1 716 676 0.92      
6 A2 1348 1273 0.00      
7 A2 563 532 0.00      
8 B1 2180 2059 64.73      
9 B1 793 748 1.75      
10 B2 2823 2666 39.05      
11 B2 1420 1341 196.68      
12 B2 436 411 23.74      

Unscaled Zero Point Vibrational Energy (zpe) 8948.1 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 8449.7 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 CCSD/6-31G*
ABC
6.72920 0.84576 0.81247

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.116
B2 0.000 -0.732 -0.116
H3 0.908 0.000 0.554
H4 -0.908 0.000 0.554
H5 0.000 1.903 0.027
H6 0.000 -1.903 0.027

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46331.34501.34501.18022.6387
B21.46331.34501.34502.63871.1802
H31.34501.34501.81562.17352.1735
H41.34501.34501.81562.17352.1735
H51.18022.63872.17352.17353.8063
H62.63871.18022.17352.17353.8063

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 57.043 B1 B2 H4 57.043
B1 B2 H6 173.037 B1 H3 B2 65.913
B1 H4 B2 65.913 B2 B1 H3 57.043
B2 B1 H4 57.043 B2 B1 H5 173.037
H3 B1 H4 84.900 H3 B1 H5 118.656
H3 B2 H4 84.900 H3 B2 H6 118.656
H4 B1 H5 118.656 H4 B2 H6 118.656
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability