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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: CCSD(T)/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at CCSD(T)/6-31G**
 hartrees
Energy at 0K-50.581761
Energy at 298.15K-50.581415
HF Energy-50.422291
Nuclear repulsion energy15.347453
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(T)/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 Σg 2871 2723 0.00      
2 Σg 1278 1213 0.00      
3 Σu 2830 2684 0.00      
4 Πg 357 339 0.00      
4 Πg 357 339 0.00      
5 Πu 599 568 0.00      
5 Πu 599 568 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4445.7 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 4216.8 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 CCSD(T)/6-31G**
B
0.83707

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.757
B2 0.000 0.000 -0.757
H3 0.000 0.000 1.931
H4 0.000 0.000 -1.931

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51431.17402.6882
B21.51432.68821.1740
H31.17402.68823.8622
H42.68821.17403.8622

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability