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

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

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-pCVTZ
 hartrees
Energy at 0K-51.902472
Energy at 298.15K 
HF Energy-51.626218
Nuclear repulsion energy24.782182
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-pCVTZ
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 2821 2821        
2 A1 2119 2119        
3 A1 1343 1343        
4 A1 1106 1106        
5 A1 726 726        
6 A2 1331 1331        
7 A2 670 670        
8 B1 2116 2116        
9 B1 795 795        
10 B2 2783 2783        
11 B2 1394 1394        
12 B2 539 539        

Unscaled Zero Point Vibrational Energy (zpe) 8872.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8872.1 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 CCSD(T)/aug-cc-pCVTZ
ABC
6.74877 0.84110 0.81037

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.735 -0.116
B2 0.000 -0.735 -0.116
H3 0.899 0.000 0.565
H4 -0.899 0.000 0.565
H5 0.000 1.902 0.016
H6 0.000 -1.902 0.016

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46931.34641.34641.17452.6396
B21.46931.34641.34642.63961.1745
H31.34641.34641.79792.17402.1740
H41.34641.34641.79792.17402.1740
H51.17452.63962.17402.17403.8033
H62.63961.17452.17402.17403.8033

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 56.930 B1 B2 H4 56.930
B1 B2 H6 173.522 B1 H3 B2 66.140
B1 H4 B2 66.140 B2 B1 H3 56.930
B2 B1 H4 56.930 B2 B1 H5 173.522
H3 B1 H4 83.779 H3 B1 H5 119.016
H3 B2 H4 83.779 H3 B2 H6 119.016
H4 B1 H5 119.016 H4 B2 H6 119.016
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability