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

using model chemistry: QCISD(TQ)/Def2TZVPP

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(TQ)/Def2TZVPP
 hartrees
Energy at 0K-51.898728
Energy at 298.15K-51.901183
HF Energy-51.652729
Nuclear repulsion energy22.248862
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(TQ)/Def2TZVPP
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 1223 1223        
2 A1 859 859        
3 B1 522 522        
4 B2 1162 1162        
5 E 2633 2633        
6 E 2633 2633        
7 E 2581 2581        
7 E 2561 2561        
8 E 1004 1004        
8 E 1003 1003        
9 E 418 418        
9 E 418 418        

Unscaled Zero Point Vibrational Energy (zpe) 8508.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8508.3 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(TQ)/Def2TZVPP
ABC
4.04172 0.65667 0.65667

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/Def2TZVPP

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
B11.65131.19801.19802.50042.5004
B21.65132.50042.50041.19801.1980
H31.19802.50042.03433.25243.2524
H41.19802.50042.03433.25243.2524
H52.50041.19803.25243.25242.0343
H62.50041.19803.25243.25242.0343

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 121.888 B1 B2 H6 121.888
B2 B1 H3 121.888 B2 B1 H4 121.888
H3 B1 H4 116.225 H5 B2 H6 116.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability