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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-51.866623
Energy at 298.15K-51.869101
HF Energy-51.641200
Nuclear repulsion energy22.218860
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 CCSD/6-31G(2df,p)
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 2629 2486 0.00      
2 A1 1239 1172 0.00      
3 A1 859 813 0.00      
4 B1 509 482 0.00      
5 B2 2610 2468 66.15      
6 B2 1181 1117 13.25      
7 E 2686 2540 71.46      
7 E 2686 2540 71.46      
8 E 1017 962 26.82      
8 E 1017 962 26.82      
9 E 432 408 4.83      
9 E 432 408 4.83      

Unscaled Zero Point Vibrational Energy (zpe) 8649.1 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 8177.7 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 CCSD/6-31G(2df,p)
ABC
4.05373 0.65269 0.65269

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.829
B2 0.000 0.000 -0.829
H3 0.000 1.016 1.461
H4 0.000 -1.016 1.461
H5 1.016 0.000 -1.461
H6 -1.016 0.000 -1.461

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65841.19631.19632.50562.5056
B21.65842.50562.50561.19631.1963
H31.19632.50562.03133.25663.2566
H41.19632.50562.03133.25663.2566
H52.50561.19633.25663.25662.0313
H62.50561.19633.25663.25662.0313

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 121.897 B1 B2 H6 121.897
B2 B1 H3 121.897 B2 B1 H4 121.897
H3 B1 H4 116.205 H5 B2 H6 116.205
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability