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 HBHHBH (Diborane(4) C2V)

using model chemistry: MP2=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-51.693366
Energy at 298.15K-51.695549
HF Energy-51.563361
Nuclear repulsion energy24.556317
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/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 2873 2730 0.17      
2 A1 2084 1980 25.64      
3 A1 1346 1279 4.11      
4 A1 1156 1099 8.06      
5 A1 693 659 1.83      
6 A2 1281 1217 0.00      
7 A2 342 325 0.00      
8 B1 2068 1965 75.04      
9 B1 778 739 1.12      
10 B2 2834 2692 39.73      
11 B2 1322 1256 203.17      
12 B2 151 143 57.38      

Unscaled Zero Point Vibrational Energy (zpe) 8464.0 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 8041.7 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/6-31G
ABC
6.55860 0.82951 0.79462

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.742 -0.114
B2 0.000 -0.742 -0.114
H3 0.927 0.000 0.557
H4 -0.927 0.000 0.557
H5 0.000 1.913 0.012
H6 0.000 -1.913 0.012

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48331.36321.36321.17772.6572
B21.48331.36321.36322.65721.1777
H31.36321.36321.85362.19392.1939
H41.36321.36321.85362.19392.1939
H51.17772.65722.19392.19393.8251
H62.65721.17772.19392.19393.8251

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.042 B1 B2 H4 57.042
B1 B2 H6 173.867 B1 H3 B2 65.915
B1 H4 B2 65.915 B2 B1 H3 57.042
B2 B1 H4 57.042 B2 B1 H5 173.867
H3 B1 H4 85.663 H3 B1 H5 119.233
H3 B2 H4 85.663 H3 B2 H6 119.233
H4 B1 H5 119.233 H4 B2 H6 119.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability