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

using model chemistry: MP4/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 MP4/cc-pVDZ
 hartrees
Energy at 0K-51.843250
Energy at 298.15K-51.845719
HF Energy-51.636962
Nuclear repulsion energy21.933487
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/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 1225 1184        
2 A1 854 826        
3 B1 502 485        
4 B2 1159 1121        
5 E 2649 2561        
6 E 2649 2561        
7 E 2590 2504        
7 E 2571 2486        
8 E 1005 972        
8 E 1005 972        
9 E 433 418        
9 E 432 417        

Unscaled Zero Point Vibrational Energy (zpe) 8535.9 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 8253.3 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/cc-pVDZ
ABC
3.93016 0.63760 0.63760

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/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 1.032 1.479
H4 0.000 -1.032 1.479
H5 1.032 0.000 -1.479
H6 -1.032 0.000 -1.479

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67701.21401.21402.53642.5364
B21.67702.53642.53641.21401.2140
H31.21402.53642.06303.29753.2975
H41.21402.53642.06303.29753.2975
H52.53641.21403.29753.29752.0630
H62.53641.21403.29753.29752.0630

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 121.824 B1 B2 H6 121.824
B2 B1 H3 121.824 B2 B1 H4 121.824
H3 B1 H4 116.353 H5 B2 H6 116.353
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability