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: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-51.854383
Energy at 298.15K-51.857206
HF Energy-51.618588
Nuclear repulsion energy24.704588
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 QCISD/6-311G**
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 2836 2706 0.09      
2 A1 2107 2010 22.14      
3 A1 1353 1291 3.39      
4 A1 1131 1079 4.76      
5 A1 734 701 3.16      
6 A2 1300 1241 0.00      
7 A2 605 577 0.00      
8 B1 2105 2008 56.99      
9 B1 806 769 1.93      
10 B2 2796 2668 36.57      
11 B2 1375 1312 212.86      
12 B2 472 451 32.73      

Unscaled Zero Point Vibrational Energy (zpe) 8809.7 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 8405.3 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 QCISD/6-311G**
ABC
6.67116 0.83721 0.80586

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.737 -0.115
B2 0.000 -0.737 -0.115
H3 0.906 0.000 0.569
H4 -0.906 0.000 0.569
H5 0.000 1.905 0.008
H6 0.000 -1.905 0.008

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47311.35331.35331.17542.6449
B21.47311.35331.35332.64491.1754
H31.35331.35331.81232.18312.1831
H41.35331.35331.81232.18312.1831
H51.17542.64492.18312.18313.8109
H62.64491.17542.18312.18313.8109

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 57.025 B1 B2 H4 57.025
B1 B2 H6 173.963 B1 H3 B2 65.951
B1 H4 B2 65.951 B2 B1 H3 57.025
B2 B1 H4 57.025 B2 B1 H5 173.963
H3 B1 H4 84.075 H3 B1 H5 119.217
H3 B2 H4 84.075 H3 B2 H6 119.217
H4 B1 H5 119.217 H4 B2 H6 119.217
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability