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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/Def2TZVPP
 hartrees
Energy at 0K-51.996479
Energy at 298.15K 
HF Energy-51.919223
Nuclear repulsion energy22.410542
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 B2PLYP=FULLultrafine/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 2605 2605 0.00      
2 A1 1223 1223 0.00      
3 A1 870 870 0.00      
4 B1 554 554 0.00      
5 B2 2586 2586 68.86      
6 B2 1162 1162 5.49      
7 E 2653 2653 85.70      
7 E 2653 2653 85.70      
8 E 1009 1009 27.26      
8 E 1009 1009 27.26      
9 E 409 409 4.89      
9 E 409 409 4.89      

Unscaled Zero Point Vibrational Energy (zpe) 8570.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8570.4 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 B2PLYP=FULLultrafine/Def2TZVPP
ABC
4.08716 0.66795 0.66795

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/Def2TZVPP

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.817
B2 0.000 0.000 -0.817
H3 0.000 1.011 1.449
H4 0.000 -1.011 1.449
H5 1.011 0.000 -1.449
H6 -1.011 0.000 -1.449

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63491.19241.19242.48182.4818
B21.63492.48182.48181.19241.1924
H31.19242.48182.02303.23153.2315
H41.19242.48182.02303.23153.2315
H52.48181.19243.23153.23152.0230
H62.48181.19243.23153.23152.0230

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 121.973 B1 B2 H6 121.973
B2 B1 H3 121.973 B2 B1 H4 121.973
H3 B1 H4 116.054 H5 B2 H6 116.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability