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

using model chemistry: CCSD(T)/TZVP

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)/TZVP
 hartrees
Energy at 0K-51.867843
Energy at 298.15K-51.870342
HF Energy-51.650549
Nuclear repulsion energy22.242498
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)/TZVP
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 1195        
2 A1 867 834        
3 B1 519 500        
4 B2 1182 1138        
5 E 2655 2556        
6 E 2655 2556        
7 E 2601 2503        
7 E 2581 2485        
8 E 1014 976        
8 E 1014 976        
9 E 435 419        
9 E 435 419        

Unscaled Zero Point Vibrational Energy (zpe) 8599.1 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 8276.6 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)/TZVP
ABC
4.04821 0.65590 0.65590

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

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 1.016 1.460
H4 0.000 -1.016 1.460
H5 1.016 0.000 -1.460
H6 -1.016 0.000 -1.460

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65211.19801.19802.50202.5020
B21.65212.50202.50201.19801.1980
H31.19802.50202.03273.25493.2549
H41.19802.50202.03273.25493.2549
H52.50201.19803.25493.25492.0327
H62.50201.19803.25493.25492.0327

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 121.962 B1 B2 H6 121.962
B2 B1 H3 121.962 B2 B1 H4 121.962
H3 B1 H4 116.076 H5 B2 H6 116.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability