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

using model chemistry: B2PLYP=FULLultrafine/3-21G

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/3-21G
 hartrees
Energy at 0K-51.642659
Energy at 298.15K 
HF Energy-51.607370
Nuclear repulsion energy22.308946
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/3-21G
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 2627 2627 0.00      
2 A1 1235 1235 0.00      
3 A1 895 895 0.00      
4 B1 565 565 0.00      
5 B2 2607 2607 58.22      
6 B2 1186 1186 3.87      
7 E 2679 2679 64.14      
7 E 2679 2679 64.14      
8 E 1010 1010 30.89      
8 E 1010 1010 30.89      
9 E 442 442 1.06      
9 E 442 442 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 8688.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8688.0 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/3-21G
ABC
4.04561 0.66309 0.66309

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.819
B2 0.000 0.000 -0.819
H3 0.000 1.017 1.457
H4 0.000 -1.017 1.457
H5 1.017 0.000 -1.457
H6 -1.017 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63861.20021.20022.49312.4931
B21.63862.49312.49311.20021.2002
H31.20022.49312.03343.24963.2496
H41.20022.49312.03343.24963.2496
H52.49311.20023.24963.24962.0334
H62.49311.20023.24963.24962.0334

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 122.100 B1 B2 H6 122.100
B2 B1 H3 122.100 B2 B1 H4 122.100
H3 B1 H4 115.799 H5 B2 H6 115.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability