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

using model chemistry: MP2=FULL/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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-51.813060
Energy at 298.15K-51.815517
HF Energy-51.638025
Nuclear repulsion energy22.062057
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 MP2=FULL/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 2614 2534 0.00      
2 A1 1229 1191 0.00      
3 A1 861 834 0.00      
4 B1 514 498 0.00      
5 B2 2595 2515 85.93      
6 B2 1165 1129 16.47      
7 E 2672 2590 98.24      
7 E 2672 2590 98.24      
8 E 1006 975 26.10      
8 E 1006 975 26.10      
9 E 416 403 7.85      
9 E 416 403 7.85      

Unscaled Zero Point Vibrational Energy (zpe) 8582.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8318.2 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 MP2=FULL/aug-cc-pVDZ
ABC
3.97727 0.64467 0.64467

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.834
B2 0.000 0.000 -0.834
H3 0.000 1.025 1.470
H4 0.000 -1.025 1.470
H5 1.025 0.000 -1.470
H6 -1.025 0.000 -1.470

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.66851.20621.20622.52172.5217
B21.66852.52172.52171.20621.2062
H31.20622.52172.05083.27733.2773
H41.20622.52172.05083.27733.2773
H52.52171.20623.27733.27732.0508
H62.52171.20623.27733.27732.0508

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 121.780 B1 B2 H6 121.780
B2 B1 H3 121.780 B2 B1 H4 121.780
H3 B1 H4 116.440 H5 B2 H6 116.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability