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/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-51.995941
Energy at 298.15K-51.998880
HF Energy-51.907298
Nuclear repulsion energy24.944468
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/aug-cc-pVTZ
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 2861 2745 0.07      
2 A1 2126 2040 16.59      
3 A1 1369 1314 3.35      
4 A1 1122 1076 1.78      
5 A1 739 709 4.40      
6 A2 1304 1251 0.00      
7 A2 678 651 0.00      
8 B1 2123 2037 43.50      
9 B1 812 779 1.92      
10 B2 2820 2705 35.48      
11 B2 1380 1324 198.96      
12 B2 567 544 31.59      

Unscaled Zero Point Vibrational Energy (zpe) 8950.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8587.1 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/aug-cc-pVTZ
ABC
6.79677 0.85421 0.82259

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.728 -0.113
B2 0.000 -0.728 -0.113
H3 0.896 0.000 0.567
H4 -0.896 0.000 0.567
H5 0.000 1.890 -0.001
H6 0.000 -1.890 -0.001

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45621.34041.34041.16742.6206
B21.45621.34041.34042.62061.1674
H31.34041.34041.79272.16782.1678
H41.34041.34041.79272.16782.1678
H51.16742.62062.16782.16783.7803
H62.62061.16742.16782.16783.7803

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 57.099 B1 B2 H4 57.099
B1 B2 H6 174.496 B1 H3 B2 65.803
B1 H4 B2 65.803 B2 B1 H3 57.099
B2 B1 H4 57.099 B2 B1 H5 174.496
H3 B1 H4 83.934 H3 B1 H5 119.472
H3 B2 H4 83.934 H3 B2 H6 119.472
H4 B1 H5 119.472 H4 B2 H6 119.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability