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: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-51.690724
Energy at 298.15K-51.692910
HF Energy-51.563357
Nuclear repulsion energy24.548479
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 MP2/6-31G
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 2872 2748 0.17      
2 A1 2083 1993 25.87      
3 A1 1346 1288 4.12      
4 A1 1157 1107 8.24      
5 A1 693 664 1.83      
6 A2 1280 1225 0.00      
7 A2 342 327 0.00      
8 B1 2066 1977 75.61      
9 B1 778 744 1.11      
10 B2 2833 2711 39.93      
11 B2 1321 1264 203.28      
12 B2 153 146 57.69      

Unscaled Zero Point Vibrational Energy (zpe) 8461.5 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 8096.0 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 MP2/6-31G
ABC
6.55299 0.82896 0.79415

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

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
B11.48381.36381.36381.17782.6578
B21.48381.36381.36382.65781.1778
H31.36381.36381.85392.19462.1946
H41.36381.36381.85392.19462.1946
H51.17782.65782.19462.19463.8259
H62.65781.17782.19462.19463.8259

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 57.045 B1 B2 H4 57.045
B1 B2 H6 173.872 B1 H3 B2 65.911
B1 H4 B2 65.911 B2 B1 H3 57.045
B2 B1 H4 57.045 B2 B1 H5 173.872
H3 B1 H4 85.639 H3 B1 H5 119.232
H3 B2 H4 85.639 H3 B2 H6 119.232
H4 B1 H5 119.232 H4 B2 H6 119.232
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability