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

using model chemistry: B2PLYP=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-51.996049
Energy at 298.15K-51.998515
HF Energy-51.918558
Nuclear repulsion energy22.429249
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 B2PLYP=FULL/aug-cc-pVTZ
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 2602 2496 0.00      
2 A1 1221 1171 0.00      
3 A1 871 836 0.00      
4 B1 556 533 0.00      
5 B2 2583 2478 67.90      
6 B2 1161 1114 5.52      
7 E 2650 2543 85.45      
7 E 2650 2543 85.45      
8 E 1006 965 26.75      
8 E 1006 965 26.75      
9 E 405 389 5.10      
9 E 405 389 5.10      

Unscaled Zero Point Vibrational Energy (zpe) 8557.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8210.1 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 B2PLYP=FULL/aug-cc-pVTZ
ABC
4.09065 0.66942 0.66942

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.816
B2 0.000 0.000 -0.816
H3 0.000 1.011 1.448
H4 0.000 -1.011 1.448
H5 1.011 0.000 -1.448
H6 -1.011 0.000 -1.448

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63271.19201.19202.47952.4795
B21.63272.47952.47951.19201.1920
H31.19202.47952.02213.22913.2291
H41.19202.47952.02213.22913.2291
H52.47951.19203.22913.22912.0221
H62.47951.19203.22913.22912.0221

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 121.979 B1 B2 H6 121.979
B2 B1 H3 121.979 B2 B1 H4 121.979
H3 B1 H4 116.041 H5 B2 H6 116.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability