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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: CCSD(T)/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/aug-cc-pVQZ
 hartrees
Energy at 0K-51.914306
Energy at 298.15K-51.917225
HF Energy-51.629398
Nuclear repulsion energy24.833760
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 CCSD(T)/aug-cc-pVQZ
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 2827 2718        
2 A1 2130 2047        
3 A1 1346 1294        
4 A1 1112 1069        
5 A1 728 700        
6 A2 1341 1290        
7 A2 681 654        
8 B1 2126 2044        
9 B1 796 766        
10 B2 2788 2680        
11 B2 1405 1350        
12 B2 553 532        

Unscaled Zero Point Vibrational Energy (zpe) 8916.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 8572.0 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 CCSD(T)/aug-cc-pVQZ
ABC
6.77919 0.84472 0.81381

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.733 -0.116
B2 0.000 -0.733 -0.116
H3 0.897 0.000 0.564
H4 -0.897 0.000 0.564
H5 0.000 1.898 0.016
H6 0.000 -1.898 0.016

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46581.34331.34331.17312.6347
B21.46581.34331.34332.63471.1731
H31.34331.34331.79432.17002.1700
H41.34331.34331.79432.17002.1700
H51.17312.63472.17002.17003.7970
H62.63471.17312.17002.17003.7970

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 56.933 B1 B2 H4 56.933
B1 B2 H6 173.515 B1 H3 B2 66.133
B1 H4 B2 66.133 B2 B1 H3 56.933
B2 B1 H4 56.933 B2 B1 H5 173.515
H3 B1 H4 83.809 H3 B1 H5 119.009
H3 B2 H4 83.809 H3 B2 H6 119.009
H4 B1 H5 119.009 H4 B2 H6 119.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability