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

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-51.806564
Energy at 298.15K-51.809325
HF Energy-51.609560
Nuclear repulsion energy24.899377
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 MP2/6-31+G**
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 2912 2739 0.07      
2 A1 2220 2088 23.39      
3 A1 1384 1302 1.81      
4 A1 1150 1081 0.65      
5 A1 722 679 4.13      
6 A2 1424 1339 0.00      
7 A2 572 538 0.00      
8 B1 2233 2101 49.84      
9 B1 800 753 3.64      
10 B2 2871 2701 41.90      
11 B2 1468 1381 224.40      
12 B2 423 398 25.48      

Unscaled Zero Point Vibrational Energy (zpe) 9089.0 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 8549.1 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 MP2/6-31+G**
ABC
6.91636 0.84711 0.81316

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.734 -0.113
B2 0.000 -0.734 -0.113
H3 0.900 0.000 0.541
H4 -0.900 0.000 0.541
H5 0.000 1.896 0.026
H6 0.000 -1.896 0.026

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46741.33301.33301.17042.6331
B21.46741.33301.33302.63311.1704
H31.33301.33301.80082.16102.1610
H41.33301.33301.80082.16102.1610
H51.17042.63312.16102.16103.7915
H62.63311.17042.16102.16103.7915

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 56.604 B1 B2 H4 56.604
B1 B2 H6 173.170 B1 H3 B2 66.791
B1 H4 B2 66.791 B2 B1 H3 56.604
B2 B1 H4 56.604 B2 B1 H5 173.170
H3 B1 H4 84.981 H3 B1 H5 119.220
H3 B2 H4 84.981 H3 B2 H6 119.220
H4 B1 H5 119.220 H4 B2 H6 119.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability