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

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-51.833263
Energy at 298.15K-51.836232
HF Energy-51.613606
Nuclear repulsion energy24.892003
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 MP2/6-31G(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 2909 2748 0.31      
2 A1 2188 2066 9.15      
3 A1 1379 1302 1.42      
4 A1 1151 1088 0.62      
5 A1 755 713 0.79      
6 A2 1393 1316 0.00      
7 A2 711 672 0.00      
8 B1 2192 2070 41.87      
9 B1 823 778 3.01      
10 B2 2869 2710 21.48      
11 B2 1441 1361 211.40      
12 B2 570 538 26.42      

Unscaled Zero Point Vibrational Energy (zpe) 9190.3 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8680.2 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 MP2/6-31G(2df,p)
ABC
6.83034 0.84777 0.81723

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.116
B2 0.000 -0.732 -0.116
H3 0.893 0.000 0.564
H4 -0.893 0.000 0.564
H5 0.000 1.894 0.014
H6 0.000 -1.894 0.014

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46341.33931.33931.17002.6294
B21.46341.33931.33932.62941.1700
H31.33931.33931.78502.16532.1653
H41.33931.33931.78502.16532.1653
H51.17002.62942.16532.16533.7890
H62.62941.17002.16532.16533.7890

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 56.885 B1 B2 H4 56.885
B1 B2 H6 173.651 B1 H3 B2 66.230
B1 H4 B2 66.230 B2 B1 H3 56.885
B2 B1 H4 56.885 B2 B1 H5 173.651
H3 B1 H4 83.581 H3 B1 H5 119.134
H3 B2 H4 83.581 H3 B2 H6 119.134
H4 B1 H5 119.134 H4 B2 H6 119.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability