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: B2PLYP=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-51.969540
Energy at 298.15K-51.972486
HF Energy-51.892674
Nuclear repulsion energy24.887944
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 B2PLYP=FULL/6-31G(2df,p)
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 2886 2886 0.27      
2 A1 2131 2131 15.22      
3 A1 1376 1376 1.92      
4 A1 1151 1151 1.81      
5 A1 758 758 0.94      
6 A2 1299 1299 0.00      
7 A2 683 683 0.00      
8 B1 2134 2134 57.64      
9 B1 826 826 2.36      
10 B2 2845 2845 25.77      
11 B2 1383 1383 197.46      
12 B2 563 563 34.57      

Unscaled Zero Point Vibrational Energy (zpe) 9017.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9017.7 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 B2PLYP=FULL/6-31G(2df,p)
ABC
6.74294 0.85017 0.82018

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.730 -0.115
B2 0.000 -0.730 -0.115
H3 0.894 0.000 0.576
H4 -0.894 0.000 0.576
H5 0.000 1.893 -0.001
H6 0.000 -1.893 -0.001

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45911.34531.34531.16882.6248
B21.45911.34531.34532.62481.1688
H31.34531.34531.78892.17162.1716
H41.34531.34531.78892.17162.1716
H51.16882.62482.17162.17163.7856
H62.62481.16882.17162.17163.7856

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 57.159 B1 B2 H4 57.159
B1 B2 H6 174.415 B1 H3 B2 65.683
B1 H4 B2 65.683 B2 B1 H3 57.159
B2 B1 H4 57.159 B2 B1 H5 174.415
H3 B1 H4 83.345 H3 B1 H5 119.324
H3 B2 H4 83.345 H3 B2 H6 119.324
H4 B1 H5 119.324 H4 B2 H6 119.324
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability