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

using model chemistry: MP4=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 MP4=FULL/aug-cc-pCVTZ
 hartrees
Energy at 0K-51.992975
Energy at 298.15K 
HF Energy-51.652067
Nuclear repulsion energy22.306580
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 MP4=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 1224 1224        
2 A1 861 861        
3 B1 528 528        
4 B2 1161 1161        
5 E 2648 2648        
6 E 2648 2648        
7 E 2593 2593        
7 E 2575 2575        
8 E 1005 1005        
8 E 1005 1005        
9 E 412 412        
9 E 411 411        

Unscaled Zero Point Vibrational Energy (zpe) 8535.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8535.5 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 MP4=FULL/aug-cc-pCVTZ
ABC
4.05513 0.66052 0.66052

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pCVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.823
B2 0.000 0.000 -0.823
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
B11.64641.19541.19542.49332.4933
B21.64642.49332.49331.19541.1954
H31.19542.49332.03103.24303.2430
H41.19542.49332.03103.24303.2430
H52.49331.19543.24303.24302.0310
H62.49331.19543.24303.24302.0310

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 121.842 B1 B2 H6 121.842
B2 B1 H3 121.842 B2 B1 H4 121.842
H3 B1 H4 116.317 H5 B2 H6 116.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability