return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP4=FULL/daug-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=FULL/daug-cc-pVDZ
 hartrees
Energy at 0K-51.855311
Energy at 298.15K-51.857754
HF Energy-51.638235
Nuclear repulsion energy22.001320
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/daug-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 1212 1212        
2 A1 853 853        
3 B1 507 507        
4 B2 1147 1147        
5 E 2629 2629        
6 E 2629 2629        
7 E 2574 2574        
7 E 2556 2556        
8 E 998 998        
8 E 998 998        
9 E 415 415        
9 E 414 414        

Unscaled Zero Point Vibrational Energy (zpe) 8465.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8465.2 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 MP4=FULL/daug-cc-pVDZ
ABC
3.96285 0.64113 0.64113

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.836
B2 0.000 0.000 -0.836
H3 0.000 1.027 1.475
H4 0.000 -1.027 1.475
H5 1.027 0.000 -1.475
H6 -1.027 0.000 -1.475

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67231.20981.20982.52932.5293
B21.67232.52932.52931.20981.2098
H31.20982.52932.05453.28873.2887
H41.20982.52932.05453.28873.2887
H52.52931.20983.28873.28872.0545
H62.52931.20983.28873.28872.0545

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 121.887 B1 B2 H6 121.887
B2 B1 H3 121.887 B2 B1 H4 121.887
H3 B1 H4 116.226 H5 B2 H6 116.226
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability