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

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-51.846465
Energy at 298.15K-51.849493
HF Energy-51.613667
Nuclear repulsion energy24.971379
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=FULL/6-31G(2df,p)
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 2922 2746 0.30      
2 A1 2198 2066 8.62      
3 A1 1386 1302 1.51      
4 A1 1156 1086 0.44      
5 A1 769 723 0.79      
6 A2 1397 1313 0.00      
7 A2 773 726 0.00      
8 B1 2203 2070 40.44      
9 B1 852 801 2.88      
10 B2 2880 2707 21.01      
11 B2 1442 1355 209.27      
12 B2 601 565 28.43      

Unscaled Zero Point Vibrational Energy (zpe) 9288.7 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 8730.5 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 MP2=FULL/6-31G(2df,p)
ABC
6.85547 0.85410 0.82342

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.728 -0.114
B2 0.000 -0.728 -0.114
H3 0.890 0.000 0.567
H4 -0.890 0.000 0.567
H5 0.000 1.889 0.003
H6 0.000 -1.889 0.003

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45661.33641.33641.16702.6204
B21.45661.33641.33642.62041.1670
H31.33641.33641.78032.16332.1633
H41.33641.33641.78032.16332.1633
H51.16702.62042.16332.16333.7789
H62.62041.16702.16332.16333.7789

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 56.976 B1 B2 H4 56.976
B1 B2 H6 174.244 B1 H3 B2 66.048
B1 H4 B2 66.048 B2 B1 H3 56.976
B2 B1 H4 56.976 B2 B1 H5 174.244
H3 B1 H4 83.532 H3 B1 H5 119.417
H3 B2 H4 83.532 H3 B2 H6 119.417
H4 B1 H5 119.417 H4 B2 H6 119.417
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability