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

using model chemistry: MP3=FULL/6-31+G**

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 MP3=FULL/6-31+G**
 hartrees
Energy at 0K-50.586300
Energy at 298.15K-50.585958
HF Energy-50.425451
Nuclear repulsion energy15.383247
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 MP3=FULL/6-31+G**
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 2909 2710 0.00      
2 Σg 1283 1196 0.00      
3 Σu 2867 2671 31.43      
4 Πg 358 333 0.00      
4 Πg 358 333 0.00      
5 Πu 599 558 0.10      
5 Πu 599 558 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 4485.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 4179.1 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 MP3=FULL/6-31+G**
B
0.84047

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

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 1.926
H4 0.000 0.000 -1.926

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51161.17052.6821
B21.51162.68211.1705
H31.17052.68213.8525
H42.68211.17053.8525

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