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: CCSD(T)=FULL/Def2TZVPP

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 CCSD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-50.666105
Energy at 298.15K-50.666172
HF Energy-50.440013
Nuclear repulsion energy15.381261
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 CCSD(T)=FULL/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 2828 2828 0.00      
2 Σg 1257 1257 0.00      
3 Σu 2787 2787 0.00      
4 Πg 589 589 0.00      
4 Πg 589 589 0.00      
5 Πu 622 622 0.00      
5 Πu 622 622 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4646.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4646.8 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 CCSD(T)=FULL/Def2TZVPP
B
0.84090

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/Def2TZVPP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.755
B2 0.000 0.000 -0.755
H3 0.000 0.000 1.927
H4 0.000 0.000 -1.927

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51061.17192.6825
B21.51062.68251.1719
H31.17192.68253.8543
H42.68251.17193.8543

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