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

using model chemistry: MP3/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP3/Def2TZVPP
 hartrees
Energy at 0K-51.886615
Energy at 298.15K-51.889098
HF Energy-51.652794
Nuclear repulsion energy22.269435
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 MP3/Def2TZVPP
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 2614 2614 0.00      
2 A1 1238 1238 0.00      
3 A1 861 861 0.00      
4 B1 521 521 0.00      
5 B2 2595 2595 80.75      
6 B2 1177 1177 14.23      
7 E 2670 2670 90.73      
7 E 2670 2670 90.73      
8 E 1014 1014 27.39      
8 E 1014 1014 27.39      
9 E 430 430 6.77      
9 E 430 430 6.77      

Unscaled Zero Point Vibrational Energy (zpe) 8616.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8616.3 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 MP3/Def2TZVPP
ABC
4.05696 0.65656 0.65656

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/Def2TZVPP

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 1.015 1.456
H4 0.000 -1.015 1.456
H5 1.015 0.000 -1.456
H6 -1.015 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65341.19461.19462.49862.4986
B21.65342.49862.49861.19461.1946
H31.19462.49862.03053.24733.2473
H41.19462.49862.03053.24733.2473
H52.49861.19463.24733.24732.0305
H62.49861.19463.24733.24732.0305

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 121.805 B1 B2 H6 121.805
B2 B1 H3 121.805 B2 B1 H4 121.805
H3 B1 H4 116.390 H5 B2 H6 116.390
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability