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

using model chemistry: QCISD(TQ)=FULL/6-31G*

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/6-31G*
 hartrees
Energy at 0K-51.823832
Energy at 298.15K-51.826330
HF Energy-51.634211
Nuclear repulsion energy22.204662
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/6-31G*
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 1241 1241        
2 A1 881 881        
3 B1 528 528        
4 B2 1179 1179        
5 E 2659 2659        
6 E 2659 2659        
7 E 2606 2606        
7 E 2585 2585        
8 E 1014 1014        
8 E 1014 1014        
9 E 442 442        
9 E 441 441        

Unscaled Zero Point Vibrational Energy (zpe) 8623.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8623.9 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/6-31G*
ABC
4.02247 0.65559 0.65559

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-31G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.825
B2 0.000 0.000 -0.825
H3 0.000 1.020 1.464
H4 0.000 -1.020 1.464
H5 1.020 0.000 -1.464
H6 -1.020 0.000 -1.464

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64941.20351.20352.50572.5057
B21.64942.50572.50571.20351.2035
H31.20352.50572.03923.26413.2641
H41.20352.50572.03923.26413.2641
H52.50571.20353.26413.26412.0392
H62.50571.20353.26413.26412.0392

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 122.095 B1 B2 H6 122.095
B2 B1 H3 122.095 B2 B1 H4 122.095
H3 B1 H4 115.810 H5 B2 H6 115.810
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability