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

using model chemistry: CCSD/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/aug-cc-pCVTZ
 hartrees
Energy at 0K-51.891473
Energy at 298.15K 
HF Energy-51.626386
Nuclear repulsion energy24.829451
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/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 2835 2835 0.07      
2 A1 2130 2130 18.70      
3 A1 1361 1361 3.25      
4 A1 1124 1124 2.52      
5 A1 737 737 3.83      
6 A2 1326 1326 0.00      
7 A2 670 670 0.00      
8 B1 2129 2129 49.32      
9 B1 803 803 1.96      
10 B2 2796 2796 39.57      
11 B2 1403 1403 210.38      
12 B2 554 554 28.00      

Unscaled Zero Point Vibrational Energy (zpe) 8932.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8932.8 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/aug-cc-pCVTZ
ABC
6.75839 0.84534 0.81421

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.115
B2 0.000 -0.732 -0.115
H3 0.899 0.000 0.567
H4 -0.899 0.000 0.567
H5 0.000 1.899 0.007
H6 0.000 -1.899 0.007

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46451.34491.34491.17312.6341
B21.46451.34491.34492.63411.1731
H31.34491.34491.79762.17432.1743
H41.34491.34491.79762.17432.1743
H51.17312.63412.17432.17433.7981
H62.63411.17312.17432.17433.7981

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 57.012 B1 B2 H4 57.012
B1 B2 H6 174.042 B1 H3 B2 65.977
B1 H4 B2 65.977 B2 B1 H3 57.012
B2 B1 H4 57.012 B2 B1 H5 174.042
H3 B1 H4 83.872 H3 B1 H5 119.270
H3 B2 H4 83.872 H3 B2 H6 119.270
H4 B1 H5 119.270 H4 B2 H6 119.270
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability