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

using model chemistry: QCISD(TQ)=FULL/6-311+G(3df,2p)

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(TQ)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-51.935161
Energy at 298.15K-51.937603
HF Energy-51.650105
Nuclear repulsion energy22.300133
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/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1216 1216        
2 A1 863 863        
3 B1 527 527        
4 B2 1155 1155        
5 E 2632 2632        
6 E 2631 2631        
7 E 2580 2580        
7 E 2561 2561        
8 E 1002 1002        
8 E 1002 1002        
9 E 407 407        
9 E 407 407        

Unscaled Zero Point Vibrational Energy (zpe) 8490.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8490.4 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 QCISD(TQ)=FULL/6-311+G(3df,2p)
ABC
4.05345 0.66048 0.66048

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-311+G(3df,2p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.823
B2 0.000 0.000 -0.823
H3 0.000 1.016 1.455
H4 0.000 -1.016 1.455
H5 1.016 0.000 -1.455
H6 -1.016 0.000 -1.455

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64561.19651.19652.49422.4942
B21.64562.49422.49421.19651.1965
H31.19652.49422.03143.24563.2456
H41.19652.49422.03143.24563.2456
H52.49421.19653.24563.24562.0314
H62.49421.19653.24563.24562.0314

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 121.908 B1 B2 H6 121.908
B2 B1 H3 121.908 B2 B1 H4 121.908
H3 B1 H4 116.184 H5 B2 H6 116.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability