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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31+G**
 hartrees
Energy at 0K-51.818308
Energy at 298.15K-51.820850
HF Energy-51.639624
Nuclear repulsion energy22.301867
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 MP2=FULL/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 2677 2514 0.00      
2 A1 1273 1195 0.00      
3 A1 880 827 0.00      
4 B1 529 497 0.00      
5 B2 2657 2495 95.92      
6 B2 1211 1138 16.88      
7 E 2737 2571 107.31      
7 E 2737 2571 107.31      
8 E 1038 974 30.09      
8 E 1038 974 30.09      
9 E 451 424 6.70      
9 E 451 424 6.70      

Unscaled Zero Point Vibrational Energy (zpe) 8838.9 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 8301.5 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 MP2=FULL/6-31+G**
ABC
4.08774 0.65714 0.65714

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.827
B2 0.000 0.000 -0.827
H3 0.000 1.011 1.456
H4 0.000 -1.011 1.456
H5 1.011 0.000 -1.456
H6 -1.011 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65331.19111.19112.49652.4965
B21.65332.49652.49651.19111.1911
H31.19112.49652.02293.24403.2440
H41.19112.49652.02293.24403.2440
H52.49651.19113.24403.24402.0229
H62.49651.19113.24403.24402.0229

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 121.884 B1 B2 H6 121.884
B2 B1 H3 121.884 B2 B1 H4 121.884
H3 B1 H4 116.232 H5 B2 H6 116.232
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability