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

using model chemistry: QCISD/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/cc-pVDZ
 hartrees
Energy at 0K-51.841509
Energy at 298.15K-51.843986
HF Energy-51.636965
Nuclear repulsion energy21.937144
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/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 2587 2482 0.00      
2 A1 1228 1178 0.00      
3 A1 856 822 0.00      
4 B1 495 475 0.00      
5 B2 2566 2462 90.05      
6 B2 1163 1115 18.50      
7 E 2642 2535 97.82      
7 E 2642 2535 97.82      
8 E 1006 965 23.18      
8 E 1006 965 23.18      
9 E 439 421 6.15      
9 E 439 421 6.15      

Unscaled Zero Point Vibrational Energy (zpe) 8534.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8187.6 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/cc-pVDZ
ABC
3.93116 0.63781 0.63781

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.838
B2 0.000 0.000 -0.838
H3 0.000 1.031 1.479
H4 0.000 -1.031 1.479
H5 1.031 0.000 -1.479
H6 -1.031 0.000 -1.479

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67661.21401.21402.53612.5361
B21.67662.53612.53611.21401.2140
H31.21402.53612.06273.29733.2973
H41.21402.53612.06273.29733.2973
H52.53611.21403.29733.29732.0627
H62.53611.21403.29733.29732.0627

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 121.833 B1 B2 H6 121.833
B2 B1 H3 121.833 B2 B1 H4 121.833
H3 B1 H4 116.334 H5 B2 H6 116.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability