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

using model chemistry: MP3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP3/6-311+G(3df,2p)
 hartrees
Energy at 0K-51.880365
Energy at 298.15K-51.882842
HF Energy-51.650240
Nuclear repulsion energy22.268740
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 MP3/6-311+G(3df,2p)
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 2602 2602 0.00      
2 A1 1231 1231 0.00      
3 A1 859 859 0.00      
4 B1 520 520 0.00      
5 B2 2581 2581 79.05      
6 B2 1171 1171 13.92      
7 E 2657 2657 90.88      
7 E 2657 2657 90.88      
8 E 1011 1011 26.56      
8 E 1011 1011 26.56      
9 E 425 425 7.07      
9 E 425 425 7.07      

Unscaled Zero Point Vibrational Energy (zpe) 8574.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8574.1 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 MP3/6-311+G(3df,2p)
ABC
4.05323 0.65677 0.65677

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-311+G(3df,2p)

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 1.016 1.456
H4 0.000 -1.016 1.456
H5 1.016 0.000 -1.456
H6 -1.016 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65301.19501.19502.49842.4984
B21.65302.49842.49841.19501.1950
H31.19502.49842.03143.24723.2472
H41.19502.49842.03143.24723.2472
H52.49841.19503.24723.24722.0314
H62.49841.19503.24723.24722.0314

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 121.792 B1 B2 H6 121.792
B2 B1 H3 121.792 B2 B1 H4 121.792
H3 B1 H4 116.415 H5 B2 H6 116.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability