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

using model chemistry: MP2/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-51.858707
Energy at 298.15K-51.861167
HF Energy-51.651994
Nuclear repulsion energy22.297417
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/daug-cc-pVTZ
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 2623 2623 0.00      
2 A1 1237 1237 0.00      
3 A1 862 862 0.00      
4 B1 529 529 0.00      
5 B2 2604 2604 79.07      
6 B2 1176 1176 13.23      
7 E 2682 2682 91.14      
7 E 2682 2682 91.14      
8 E 1012 1012 28.19      
8 E 1012 1012 28.19      
9 E 416 416 6.78      
9 E 416 416 6.78      

Unscaled Zero Point Vibrational Energy (zpe) 8625.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8625.3 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 MP2/daug-cc-pVTZ
ABC
4.05880 0.65863 0.65863

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/daug-cc-pVTZ

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 1.015 1.453
H4 0.000 -1.015 1.453
H5 1.015 0.000 -1.453
H6 -1.015 0.000 -1.453

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65091.19351.19352.49472.4947
B21.65092.49472.49471.19351.1935
H31.19352.49472.03013.24193.2419
H41.19352.49472.03013.24193.2419
H52.49471.19353.24193.24192.0301
H62.49471.19353.24193.24192.0301

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 121.742 B1 B2 H6 121.742
B2 B1 H3 121.742 B2 B1 H4 121.742
H3 B1 H4 116.516 H5 B2 H6 116.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability