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

using model chemistry: MP2=FULL/6-311G*

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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-50.588825
Energy at 298.15K-50.588844
HF Energy-50.430448
Nuclear repulsion energy15.360289
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 MP2=FULL/6-311G*
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 2861 2709 0.00      
2 Σg 1272 1205 0.00      
3 Σu 2818 2669 18.01      
4 Πg 541 513 0.00      
4 Πg 541 513 0.00      
5 Πu 636 602 0.23      
5 Πu 636 602 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 4652.3 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 4406.2 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 MP2=FULL/6-311G*
B
0.83900

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.756
B2 0.000 0.000 -0.756
H3 0.000 0.000 1.932
H4 0.000 0.000 -1.932

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51131.17592.6872
B21.51132.68721.1759
H31.17592.68723.8630
H42.68721.17593.8630

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