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

using model chemistry: QCISD(T)=FULL/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 QCISD(T)=FULL/daug-cc-pVDZ
 hartrees
Energy at 0K-51.857780
Energy at 298.15K-51.860214
HF Energy-51.638191
Nuclear repulsion energy21.995199
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 QCISD(T)=FULL/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 1208 1208        
2 A1 853 853        
3 B1 505 505        
4 B2 1143 1143        
5 E 2613 2613        
6 E 2613 2613        
7 E 2561 2561        
7 E 2542 2542        
8 E 994 994        
8 E 994 994        
9 E 412 412        
9 E 411 411        

Unscaled Zero Point Vibrational Energy (zpe) 8423.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8423.6 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 QCISD(T)=FULL/daug-cc-pVDZ
ABC
3.95783 0.64123 0.64123

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/daug-cc-pVDZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.836
B2 0.000 0.000 -0.836
H3 0.000 1.028 1.476
H4 0.000 -1.028 1.476
H5 1.028 0.000 -1.476
H6 -1.028 0.000 -1.476

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67141.21101.21102.52992.5299
B21.67142.52992.52991.21101.2110
H31.21102.52992.05583.29053.2905
H41.21102.52992.05583.29053.2905
H52.52991.21103.29053.29052.0558
H62.52991.21103.29053.29052.0558

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 121.920 B1 B2 H6 121.920
B2 B1 H3 121.920 B2 B1 H4 121.920
H3 B1 H4 116.159 H5 B2 H6 116.159
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability