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

using model chemistry: CCSD(T)/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)/6-31G*
 hartrees
Energy at 0K-51.813883
Energy at 298.15K-51.816383
HF Energy-51.634260
Nuclear repulsion energy22.181681
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)/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 1194        
2 A1 880 847        
3 B1 526 506        
4 B2 1180 1135        
5 E 2659 2558        
6 E 2659 2558        
7 E 2605 2506        
7 E 2585 2487        
8 E 1014 976        
8 E 1014 976        
9 E 443 426        
9 E 443 426        

Unscaled Zero Point Vibrational Energy (zpe) 8624.3 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 8297.4 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)/6-31G*
ABC
4.01978 0.65368 0.65368

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

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 1.020 1.466
H4 0.000 -1.020 1.466
H5 1.020 0.000 -1.466
H6 -1.020 0.000 -1.466

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65241.20391.20392.50872.5087
B21.65242.50872.50871.20391.2039
H31.20392.50872.03993.26723.2672
H41.20392.50872.03993.26723.2672
H52.50871.20393.26723.26722.0399
H62.50871.20393.26723.26722.0399

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 122.092 B1 B2 H6 122.092
B2 B1 H3 122.092 B2 B1 H4 122.092
H3 B1 H4 115.817 H5 B2 H6 115.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability