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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-51.893294
Energy at 298.15K 
HF Energy-51.651963
Nuclear repulsion energy22.249698
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 QCISD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.826
B2 0.000 0.000 -0.826
H3 0.000 1.017 1.458
H4 0.000 -1.017 1.458
H5 1.017 0.000 -1.458
H6 -1.017 0.000 -1.458

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65271.19721.19722.50042.5004
B21.65272.50042.50041.19721.1972
H31.19722.50042.03413.25113.2511
H41.19722.50042.03413.25113.2511
H52.50041.19723.25113.25112.0341
H62.50041.19723.25113.25112.0341

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.837 B1 B2 H6 121.837
B2 B1 H3 121.837 B2 B1 H4 121.837
H3 B1 H4 116.326 H5 B2 H6 116.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability