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

using model chemistry: QCISD(T)=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 QCISD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-51.926488
Energy at 298.15K-51.928987
HF Energy-51.651429
Nuclear repulsion energy22.409521
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 QCISD(T)=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 1229 1176        
2 A1 875 838        
3 B1 554 530        
4 B2 1167 1116        
5 E 2658 2544        
6 E 2658 2543        
7 E 2601 2489        
7 E 2579 2468        
8 E 1020 976        
8 E 1020 976        
9 E 419 401        
9 E 419 401        

Unscaled Zero Point Vibrational Energy (zpe) 8599.4 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 8228.8 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 QCISD(T)=FULL/cc-pVTZ
ABC
4.09020 0.66739 0.66739

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.818
B2 0.000 0.000 -0.818
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
B11.63651.19141.19142.48192.4819
B21.63652.48192.48191.19141.1914
H31.19142.48192.02223.23043.2304
H41.19142.48192.02223.23043.2304
H52.48191.19143.23043.23042.0222
H62.48191.19143.23043.23042.0222

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 121.929 B1 B2 H6 121.929
B2 B1 H3 121.929 B2 B1 H4 121.929
H3 B1 H4 116.142 H5 B2 H6 116.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability