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

using model chemistry: MP2/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-50.556849
Energy at 298.15K-50.556903
HF Energy-50.427031
Nuclear repulsion energy15.192445
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/aug-cc-pVDZ
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 2849 2732 0.00      
2 Σg 1261 1209 0.00      
3 Σu 2807 2692 26.24      
4 Πg 564 541 0.00      
4 Πg 564 541 0.00      
5 Πu 631 605 0.00      
5 Πu 631 605 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4653.7 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 4462.9 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/aug-cc-pVDZ
B
0.81959

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.766
B2 0.000 0.000 -0.766
H3 0.000 0.000 1.950
H4 0.000 0.000 -1.950

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.53101.18462.7156
B21.53102.71561.1846
H31.18462.71563.9002
H42.71561.18463.9002

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