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

using model chemistry: CCSD(T)=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-51.823269
Energy at 298.15K-51.825767
HF Energy-51.634214
Nuclear repulsion energy22.205281
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 CCSD(T)=FULL/6-31G*
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 1241 1205        
2 A1 881 855        
3 B1 528 513        
4 B2 1180 1145        
5 E 2660 2583        
5 E 2660 2582        
6 E 2606 2530        
6 E 2586 2510        
7 E 1014 984        
7 E 1014 984        
8 E 442 429        
8 E 441 428        

Unscaled Zero Point Vibrational Energy (zpe) 8627.2 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 8374.5 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 CCSD(T)=FULL/6-31G*
ABC
4.02310 0.65560 0.65560

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.825
B2 0.000 0.000 -0.825
H3 0.000 1.020 1.464
H4 0.000 -1.020 1.464
H5 1.020 0.000 -1.464
H6 -1.020 0.000 -1.464

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64941.20351.20352.50572.5057
B21.64942.50572.50571.20351.2035
H31.20352.50572.03903.26403.2640
H41.20352.50572.03903.26403.2640
H52.50571.20353.26403.26402.0390
H62.50571.20353.26403.26402.0390

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 122.096 B1 B2 H6 122.096
B2 B1 H3 122.096 B2 B1 H4 122.096
H3 B1 H4 115.808 H5 B2 H6 115.808
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability