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

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

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(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-51.853322
Energy at 298.15K-51.855760
HF Energy-51.638160
Nuclear repulsion energy21.968984
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-pVDZ
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 1207 1207        
2 A1 850 850        
3 B1 503 503        
4 B2 1143 1143        
5 E 2606 2606        
6 E 2606 2606        
7 E 2553 2553        
7 E 2535 2535        
8 E 994 994        
8 E 994 994        
9 E 415 415        
9 E 415 415        

Unscaled Zero Point Vibrational Energy (zpe) 8409.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8409.9 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(T)/daug-cc-pVDZ
ABC
3.94650 0.63969 0.63969

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.837
B2 0.000 0.000 -0.837
H3 0.000 1.029 1.477
H4 0.000 -1.029 1.477
H5 1.029 0.000 -1.477
H6 -1.029 0.000 -1.477

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67371.21231.21232.53272.5327
B21.67372.53272.53271.21231.2123
H31.21232.53272.05873.29363.2936
H41.21232.53272.05873.29363.2936
H52.53271.21233.29363.29362.0587
H62.53271.21233.29363.29362.0587

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 121.887 B1 B2 H6 121.887
B2 B1 H3 121.887 B2 B1 H4 121.887
H3 B1 H4 116.227 H5 B2 H6 116.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability