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

using model chemistry: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-51.861078
Energy at 298.15K-51.863892
HF Energy-51.618413
Nuclear repulsion energy24.679351
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 MP4/6-311G**
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 2750        
2 A1 2109 2045        
3 A1 1339 1299        
4 A1 1118 1084        
5 A1 728 706        
6 A2 1322 1282        
7 A2 612 594        
8 B1 2106 2042        
9 B1 801 776        
10 B2 2797 2712        
11 B2 1377 1335        
12 B2 461 447        

Unscaled Zero Point Vibrational Energy (zpe) 8802.7 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 8536.0 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 MP4/6-311G**
ABC
6.67882 0.83432 0.80331

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.738 -0.117
B2 0.000 -0.738 -0.117
H3 0.905 0.000 0.566
H4 -0.905 0.000 0.566
H5 0.000 1.907 0.017
H6 0.000 -1.907 0.017

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47681.35321.35321.17582.6484
B21.47681.35321.35322.64841.1758
H31.35321.35321.81062.18082.1808
H41.35321.35321.81062.18082.1808
H51.17582.64842.18082.18083.8132
H62.64841.17582.18082.18083.8132

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 56.929 B1 B2 H4 56.929
B1 B2 H6 173.457 B1 H3 B2 66.143
B1 H4 B2 66.143 B2 B1 H3 56.929
B2 B1 H4 56.929 B2 B1 H5 173.457
H3 B1 H4 83.981 H3 B1 H5 118.988
H3 B2 H4 83.981 H3 B2 H6 118.988
H4 B1 H5 118.988 H4 B2 H6 118.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability