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

using model chemistry: QCISD/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-51.847812
Energy at 298.15K-51.850269
HF Energy-51.637938
Nuclear repulsion energy21.968981
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/aug-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 2568 2488 0.00      
2 A1 1219 1181 0.00      
3 A1 852 826 0.00      
4 B1 496 480 0.00      
5 B2 2548 2468 88.04      
6 B2 1155 1119 19.03      
7 E 2620 2538 102.19      
7 E 2620 2538 102.19      
8 E 998 967 23.06      
8 E 998 967 23.06      
9 E 427 414 8.52      
9 E 427 414 8.52      

Unscaled Zero Point Vibrational Energy (zpe) 8463.9 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 8199.0 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 QCISD/aug-cc-pVDZ
ABC
3.94810 0.63918 0.63918

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.838
B2 0.000 0.000 -0.838
H3 0.000 1.029 1.477
H4 0.000 -1.029 1.477
H5 1.029 0.000 -1.477
H6 -1.029 0.000 -1.477

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67521.21151.21152.53282.5328
B21.67522.53282.53281.21151.2115
H31.21152.53282.05833.29263.2926
H41.21152.53282.05833.29263.2926
H52.53281.21153.29263.29262.0583
H62.53281.21153.29263.29262.0583

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 121.840 B1 B2 H6 121.840
B2 B1 H3 121.840 B2 B1 H4 121.840
H3 B1 H4 116.320 H5 B2 H6 116.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability