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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-50.484642
Energy at 298.15K-50.483907
HF Energy-50.403610
Nuclear repulsion energy15.228995
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/6-31G
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 2850 2708 0.00      
2 Σg 1266 1203 0.00      
3 Σu 2809 2669 37.89      
4 Πg 207 197 0.00      
4 Πg 207 197 0.00      
5 Πu 589 560 1.90      
5 Πu 589 560 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 4258.8 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 4046.3 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/6-31G
B
0.82350

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.764
B2 0.000 0.000 -0.764
H3 0.000 0.000 1.945
H4 0.000 0.000 -1.945

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52741.18162.7091
B21.52742.70911.1816
H31.18162.70913.8907
H42.70911.18163.8907

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