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

using model chemistry: MP4=FULL/6-31G*

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/6-31G*
 hartrees
Energy at 0K-51.820782
Energy at 298.15K-51.823291
HF Energy-51.634286
Nuclear repulsion energy22.209434
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/6-31G*
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 1246 1198        
2 A1 881 847        
3 B1 530 509        
4 B2 1185 1140        
5 E 2679 2577        
6 E 2679 2576        
7 E 2622 2521        
7 E 2603 2503        
8 E 1019 980        
8 E 1019 980        
9 E 446 429        
9 E 445 428        

Unscaled Zero Point Vibrational Energy (zpe) 8677.2 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 8344.0 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 MP4=FULL/6-31G*
ABC
4.02930 0.65522 0.65522

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.825
B2 0.000 0.000 -0.825
H3 0.000 1.019 1.464
H4 0.000 -1.019 1.464
H5 1.019 0.000 -1.464
H6 -1.019 0.000 -1.464

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65081.20211.20212.50552.5055
B21.65082.50552.50551.20211.2021
H31.20212.50552.03753.26253.2625
H41.20212.50552.03753.26253.2625
H52.50551.20213.26253.26252.0375
H62.50551.20213.26253.26252.0375

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 122.066 B1 B2 H6 122.066
B2 B1 H3 122.066 B2 B1 H4 122.066
H3 B1 H4 115.868 H5 B2 H6 115.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability