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

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-51.841740
Energy at 298.15K-51.844288
HF Energy-51.639715
Nuclear repulsion energy22.250093
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 CCD/6-31+G**
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 2653 2500 0.00      
2 A1 1269 1195 0.00      
3 A1 878 827 0.00      
4 B1 512 483 0.00      
5 B2 2631 2480 100.12      
6 B2 1208 1138 21.14      
7 E 2708 2552 111.19      
7 E 2708 2552 111.19      
8 E 1034 974 27.77      
8 E 1034 974 27.77      
9 E 464 437 7.76      
9 E 464 437 7.76      

Unscaled Zero Point Vibrational Energy (zpe) 8781.0 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 8274.3 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 CCD/6-31+G**
ABC
4.07862 0.65354 0.65354

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.829
B2 0.000 0.000 -0.829
H3 0.000 1.013 1.460
H4 0.000 -1.013 1.460
H5 1.013 0.000 -1.460
H6 -1.013 0.000 -1.460

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65791.19331.19332.50322.5032
B21.65792.50322.50321.19331.1933
H31.19332.50322.02513.25293.2529
H41.19332.50322.02513.25293.2529
H52.50321.19333.25293.25292.0251
H62.50321.19333.25293.25292.0251

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 121.947 B1 B2 H6 121.947
B2 B1 H3 121.947 B2 B1 H4 121.947
H3 B1 H4 116.106 H5 B2 H6 116.106
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability