return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD(TQ)=FULL/daug-cc-pVTZ

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 QCISD(TQ)=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-50.666597
Energy at 298.15K 
HF Energy-50.439424
Nuclear repulsion energy15.434695
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(TQ)=FULL/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(TQ)=FULL/daug-cc-pVTZ
B
0.84716

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.752
B2 0.000 0.000 -0.752
H3 0.000 0.000 1.921
H4 0.000 0.000 -1.921

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50441.16922.6736
B21.50442.67361.1692
H31.16922.67363.8428
H42.67361.16923.8428

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