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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-51.877582
Energy at 298.15K-51.872811
HF Energy-51.632767
Nuclear repulsion energy22.036178
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 CBS-Q
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 2679 2679 0.00      
2 A1 1316 1316 0.00      
3 A1 866 866 0.00      
4 B1 480 480 0.00      
5 B2 2653 2653 131.25      
6 B2 1255 1255 35.05      
7 E 2727 2727 133.35      
7 E 2727 2727 133.35      
8 E 1061 1061 36.45      
8 E 1061 1061 36.45      
9 E 492 492 11.05      
9 E 492 492 11.05      

Unscaled Zero Point Vibrational Energy (zpe) 8902.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8902.9 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 CBS-Q
ABC
4.00712 0.64719 0.64719

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.841
B2 0.000 0.000 -0.841
H3 0.000 1.019 1.474
H4 0.000 -1.019 1.474
H5 1.019 0.000 -1.474
H6 -1.019 0.000 -1.474

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.68291.19911.19912.52972.5297
B21.68292.52972.52971.19911.1991
H31.19912.52972.03713.28133.2813
H41.19912.52972.03713.28133.2813
H52.52971.19913.28133.28132.0371
H62.52971.19913.28133.28132.0371

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 121.845 B1 B2 H6 121.845
B2 B1 H3 121.845 B2 B1 H4 121.845
H3 B1 H4 116.310 H5 B2 H6 116.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability