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

using model chemistry: MP4=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-51.924181
Energy at 298.15K-51.926687
HF Energy-51.651442
Nuclear repulsion energy22.414306
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 MP4=FULL/cc-pVTZ
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 1233 1187        
2 A1 875 843        
3 B1 556 536        
4 B2 1170 1127        
5 E 2672 2573        
6 E 2672 2573        
7 E 2613 2516        
7 E 2592 2495        
8 E 1023 985        
8 E 1023 985        
9 E 422 406        
9 E 421 405        

Unscaled Zero Point Vibrational Energy (zpe) 8635.6 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 8315.2 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 MP4=FULL/cc-pVTZ
ABC
4.09459 0.66723 0.66723

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

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 1.011 1.448
H4 0.000 -1.011 1.448
H5 1.011 0.000 -1.448
H6 -1.011 0.000 -1.448

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63741.19031.19032.48142.4814
B21.63742.48142.48141.19031.1903
H31.19032.48142.02123.22883.2288
H41.19032.48142.02123.22883.2288
H52.48141.19033.22883.22882.0212
H62.48141.19033.22883.22882.0212

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 121.896 B1 B2 H6 121.896
B2 B1 H3 121.896 B2 B1 H4 121.896
H3 B1 H4 116.208 H5 B2 H6 116.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability