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

using model chemistry: MP4/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/cc-pVTZ
 hartrees
Energy at 0K-51.894924
Energy at 298.15K-51.897393
HF Energy-51.651738
Nuclear repulsion energy22.252789
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/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 858 832        
2 B1 523 507        
3 E 2644 2563        
4 E 2644 2563        
5 E 2588 2508        
6 E 2569 2490        
7 E 1228 1191        
7 E 1167 1131        
8 E 1007 976        
8 E 1007 976        
9 E 420 407        
9 E 419 406        

Unscaled Zero Point Vibrational Energy (zpe) 8536.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8273.7 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 MP4/cc-pVTZ
ABC
4.04486 0.65647 0.65647

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.826
B2 0.000 0.000 -0.826
H3 0.000 1.017 1.458
H4 0.000 -1.017 1.458
H5 1.017 0.000 -1.458
H6 -1.017 0.000 -1.458

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65241.19691.19692.50002.5000
B21.65242.50002.50001.19691.1969
H31.19692.50002.03353.25073.2507
H41.19692.50002.03353.25073.2507
H52.50001.19693.25073.25072.0335
H62.50001.19693.25073.25072.0335

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 121.843 B1 B2 H6 121.843
B2 B1 H3 121.843 B2 B1 H4 121.843
H3 B1 H4 116.313 H5 B2 H6 116.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability