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

using model chemistry: CISD/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CISD/daug-cc-pVDZ
 hartrees
Energy at 0K-51.834368
Energy at 298.15K-51.836859
HF Energy-51.638308
Nuclear repulsion energy22.014179
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 CISD/daug-cc-pVDZ
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 2598 2598 0.00      
2 A1 1234 1234 0.00      
3 A1 857 857 0.00      
4 B1 499 499 0.00      
5 B2 2577 2577 94.47      
6 B2 1172 1172 21.08      
7 E 2649 2649 107.53      
7 E 2649 2649 107.53      
8 E 1014 1014 25.43      
8 E 1014 1014 25.43      
9 E 437 437 9.12      
9 E 437 437 9.12      

Unscaled Zero Point Vibrational Energy (zpe) 8568.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8568.0 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 CISD/daug-cc-pVDZ
ABC
3.97107 0.64093 0.64093

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/daug-cc-pVDZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.837
B2 0.000 0.000 -0.837
H3 0.000 1.026 1.473
H4 0.000 -1.026 1.473
H5 1.026 0.000 -1.473
H6 -1.026 0.000 -1.473

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67421.20741.20742.52802.5280
B21.67422.52802.52801.20741.2074
H31.20742.52802.05243.28463.2846
H41.20742.52802.05243.28463.2846
H52.52801.20743.28463.28462.0524
H62.52801.20743.28463.28462.0524

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 121.799 B1 B2 H6 121.799
B2 B1 H3 121.799 B2 B1 H4 121.799
H3 B1 H4 116.403 H5 B2 H6 116.403
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability