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All results from a given calculation for B2H6 (Diborane)

using model chemistry: QCISD(T)/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at QCISD(T)/daug-cc-pVTZ
 hartrees
Energy at 0K-53.147078
Energy at 298.15K 
HF Energy-52.835366
Nuclear repulsion energy32.106137
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(T)/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/daug-cc-pVTZ
ABC
2.67846 0.61151 0.56155

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/daug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.882 0.000 0.000
B2 -0.882 0.000 0.000
H3 0.000 0.000 0.976
H4 0.000 0.000 -0.976
H5 1.455 1.042 0.000
H6 1.455 -1.042 0.000
H7 -1.455 1.042 0.000
H8 -1.455 -1.042 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76331.31531.31531.18881.18882.55802.5580
B21.76331.31531.31532.55802.55801.18881.1888
H31.31531.31531.95222.03812.03812.03812.0381
H41.31531.31531.95222.03812.03812.03812.0381
H51.18882.55802.03812.03812.08312.90953.5783
H61.18882.55802.03812.03812.08313.57832.9095
H72.55801.18882.03812.03812.90953.57832.0831
H82.55801.18882.03812.03813.57832.90952.0831

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.178 B1 H4 B2 84.178
H3 B1 H4 95.822 H3 B1 H5 108.852
H3 B1 H6 108.852 H3 B2 H4 95.822
H3 B2 H7 108.852 H3 B2 H8 108.852
H4 B1 H5 108.852 H4 B1 H6 108.852
H4 B2 H7 108.852 H4 B2 H8 108.852
H5 B1 H6 122.357 H7 B2 H8 122.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability