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

using model chemistry: QCISD(TQ)=FULL/6-31G*

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(TQ)=FULL/6-31G*
 hartrees
Energy at 0K-51.818876
Energy at 298.15K-51.821608
HF Energy-51.601668
Nuclear repulsion energy24.793471
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(TQ)=FULL/6-31G*
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 2853 2853        
2 A1 2173 2173        
3 A1 1382 1382        
4 A1 1169 1169        
5 A1 709 709        
6 A2 1355 1355        
7 A2 565 565        
8 B1 2175 2175        
9 B1 790 790        
10 B2 2813 2813        
11 B2 1417 1417        
12 B2 421 421        

Unscaled Zero Point Vibrational Energy (zpe) 8911.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8911.5 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(TQ)=FULL/6-31G*
ABC
6.73297 0.84472 0.81129

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.117
B2 0.000 -0.732 -0.117
H3 0.908 0.000 0.551
H4 -0.908 0.000 0.551
H5 0.000 1.904 0.034
H6 0.000 -1.904 0.034

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46481.34451.34451.18092.6404
B21.46481.34451.34452.64041.1809
H31.34451.34451.81662.17192.1719
H41.34451.34451.81662.17192.1719
H51.18092.64042.17192.17193.8074
H62.64041.18092.17192.17193.8074

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 56.994 B1 B2 H4 56.994
B1 B2 H6 172.681 B1 H3 B2 66.011
B1 H4 B2 66.011 B2 B1 H3 56.994
B2 B1 H4 56.994 B2 B1 H5 172.681
H3 B1 H4 84.997 H3 B1 H5 118.489
H3 B2 H4 84.997 H3 B2 H6 118.489
H4 B1 H5 118.489 H4 B2 H6 118.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability