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

using model chemistry: MP2=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-50.619037
Energy at 298.15K-50.619108
HF Energy-50.439043
Nuclear repulsion energy15.462246
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/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 Σg 2883 2737 0.00      
2 Σg 1290 1225 0.00      
3 Σu 2823 2680 23.31      
4 Πg 586 556 0.00      
4 Πg 586 556 0.00      
5 Πu 622 590 0.36      
5 Πu 622 590 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 4705.4 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 4467.3 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/cc-pVTZ
B
0.84975

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.751
B2 0.000 0.000 -0.751
H3 0.000 0.000 1.918
H4 0.000 0.000 -1.918

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50241.16672.6690
B21.50242.66901.1667
H31.16672.66903.8357
H42.66901.16673.8357

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