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

using model chemistry: MP2=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 MP2=FULL/3-21G
 hartrees
Energy at 0K-51.420691
Energy at 298.15K-51.423232
HF Energy-51.292333
Nuclear repulsion energy24.634349
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/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 2907 2776 0.47      
2 A1 2073 1979 19.14      
3 A1 1362 1300 3.43      
4 A1 1158 1105 12.76      
5 A1 705 673 1.03      
6 A2 1297 1238 0.00      
7 A2 508 485 0.00      
8 B1 2045 1953 70.46      
9 B1 802 765 1.79      
10 B2 2864 2734 31.77      
11 B2 1336 1276 189.95      
12 B2 278 265 66.88      

Unscaled Zero Point Vibrational Energy (zpe) 8667.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 8275.5 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/3-21G
ABC
6.59926 0.83498 0.80015

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.739 -0.112
B2 0.000 -0.739 -0.112
H3 0.923 0.000 0.559
H4 -0.923 0.000 0.559
H5 0.000 1.908 0.002
H6 0.000 -1.908 0.002

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47731.35931.35931.17482.6490
B21.47731.35931.35932.64901.1748
H31.35931.35931.84572.19152.1915
H41.35931.35931.84572.19152.1915
H51.17482.64902.19152.19153.8158
H62.64901.17482.19152.19153.8158

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 57.083 B1 B2 H4 57.083
B1 B2 H6 174.447 B1 H3 B2 65.834
B1 H4 B2 65.834 B2 B1 H3 57.083
B2 B1 H4 57.083 B2 B1 H5 174.447
H3 B1 H4 85.518 H3 B1 H5 119.544
H3 B2 H4 85.518 H3 B2 H6 119.544
H4 B1 H5 119.544 H4 B2 H6 119.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability