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

using model chemistry: CCSD=FULL/aug-cc-pCVTZ

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=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-51.987940
Energy at 298.15K 
HF Energy-51.652092
Nuclear repulsion energy22.302204
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=FULL/aug-cc-pCVTZ
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 2594 2594 0.00      
2 A1 1233 1233 0.00      
3 A1 863 863 0.00      
4 B1 517 517 0.00      
5 B2 2574 2574 78.67      
6 B2 1171 1171 12.75      
7 E 2646 2646 93.09      
7 E 2646 2646 93.09      
8 E 1011 1011 25.16      
8 E 1011 1011 25.16      
9 E 426 426 6.78      
9 E 426 426 6.78      

Unscaled Zero Point Vibrational Energy (zpe) 8559.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8559.4 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=FULL/aug-cc-pCVTZ
ABC
4.05600 0.65987 0.65987

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/aug-cc-pCVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.824
B2 0.000 0.000 -0.824
H3 0.000 1.015 1.454
H4 0.000 -1.015 1.454
H5 1.015 0.000 -1.454
H6 -1.015 0.000 -1.454

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64771.19511.19512.49402.4940
B21.64772.49402.49401.19511.1951
H31.19512.49402.03083.24353.2435
H41.19512.49402.03083.24353.2435
H52.49401.19513.24353.24352.0308
H62.49401.19513.24353.24352.0308

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 121.830 B1 B2 H6 121.830
B2 B1 H3 121.830 B2 B1 H4 121.830
H3 B1 H4 116.340 H5 B2 H6 116.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability