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

using model chemistry: MP2/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-51.871938
Energy at 298.15K-51.874415
HF Energy-51.654984
Nuclear repulsion energy22.339443
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 MP2/cc-pVQZ
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 2628 2492 0.00      
2 A1 1240 1176 0.00      
3 A1 864 820 0.00      
4 B1 529 502 0.00      
5 B2 2609 2475 76.42      
6 B2 1178 1117 12.38      
7 E 2688 2549 87.29      
7 E 2688 2549 87.29      
8 E 1014 961 28.88      
8 E 1014 961 28.88      
9 E 420 398 6.51      
9 E 420 398 6.51      

Unscaled Zero Point Vibrational Energy (zpe) 8645.3 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 8199.2 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 MP2/cc-pVQZ
ABC
4.06837 0.66155 0.66155

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVQZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.824
B2 0.000 0.000 -0.824
H3 0.000 1.014 1.450
H4 0.000 -1.014 1.450
H5 1.014 0.000 -1.450
H6 -1.014 0.000 -1.450

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64701.19191.19192.48952.4895
B21.64702.48952.48951.19191.1919
H31.19192.48952.02773.23553.2355
H41.19192.48952.02773.23553.2355
H52.48951.19193.23553.23552.0277
H62.48951.19193.23553.23552.0277

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 121.723 B1 B2 H6 121.723
B2 B1 H3 121.723 B2 B1 H4 121.723
H3 B1 H4 116.554 H5 B2 H6 116.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability