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: MP3=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 MP3=FULL/6-31G
 hartrees
Energy at 0K-51.739653
Energy at 298.15K-51.742222
HF Energy-51.614215
Nuclear repulsion energy22.059043
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 MP3=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 2585 2585 0.00      
2 A1 1245 1245 0.00      
3 A1 873 873 0.00      
4 B1 536 536 0.00      
5 B2 2563 2563 90.52      
6 B2 1198 1198 13.59      
7 E 2640 2640 98.91      
7 E 2640 2640 98.91      
8 E 1026 1026 28.05      
8 E 1026 1026 28.05      
9 E 472 472 4.69      
9 E 472 472 4.69      

Unscaled Zero Point Vibrational Energy (zpe) 8637.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8637.3 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 MP3=FULL/6-31G
ABC
3.98936 0.64464 0.64464

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.833
B2 0.000 0.000 -0.833
H3 0.000 1.024 1.473
H4 0.000 -1.024 1.473
H5 1.024 0.000 -1.473
H6 -1.024 0.000 -1.473

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.66641.20751.20752.52362.5236
B21.66642.52362.52361.20751.2075
H31.20752.52362.04763.28333.2833
H41.20752.52362.04763.28333.2833
H52.52361.20753.28333.28332.0476
H62.52361.20753.28333.28332.0476

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 122.018 B1 B2 H6 122.018
B2 B1 H3 122.018 B2 B1 H4 122.018
H3 B1 H4 115.964 H5 B2 H6 115.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability