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

using model chemistry: MP4=FULL/3-21G

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=FULL/3-21G
 hartrees
Energy at 0K-51.449016
Energy at 298.15K-51.451372
HF Energy-51.291956
Nuclear repulsion energy24.506819
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=FULL/3-21G
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 2851 2790        
2 A1 2008 1965        
3 A1 1338 1310        
4 A1 1131 1107        
5 A1 684 669        
6 A2 1246 1219        
7 A2 453 443        
8 B1 1974 1932        
9 B1 781 764        
10 B2 2807 2747        
11 B2 1285 1258        
12 B2 197 193        

Unscaled Zero Point Vibrational Energy (zpe) 8376.8 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 8199.2 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=FULL/3-21G
ABC
6.49151 0.82710 0.79338

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.742 -0.116
B2 0.000 -0.742 -0.116
H3 0.927 0.000 0.565
H4 -0.927 0.000 0.565
H5 0.000 1.915 0.013
H6 0.000 -1.915 0.013

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48391.36861.36861.18062.6605
B21.48391.36861.36862.66051.1806
H31.36861.36861.85372.19832.1983
H41.36861.36861.85372.19832.1983
H51.18062.66052.19832.19833.8309
H62.66051.18062.19832.19833.8309

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 57.171 B1 B2 H4 57.171
B1 B2 H6 173.738 B1 H3 B2 65.658
B1 H4 B2 65.658 B2 B1 H3 57.171
B2 B1 H4 57.171 B2 B1 H5 173.738
H3 B1 H4 85.258 H3 B1 H5 118.989
H3 B2 H4 85.258 H3 B2 H6 118.989
H4 B1 H5 118.989 H4 B2 H6 118.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability