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

using model chemistry: CISD/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 CISD/3-21G
 hartrees
Energy at 0K-51.435504
Energy at 298.15K-51.437949
HF Energy-51.292449
Nuclear repulsion energy24.569790
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 CISD/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 2878 2709 0.55      
2 A1 2019 1901 25.21      
3 A1 1367 1286 4.64      
4 A1 1156 1088 18.84      
5 A1 704 662 1.02      
6 A2 1227 1155 0.00      
7 A2 442 416 0.00      
8 B1 1984 1868 86.13      
9 B1 798 751 1.14      
10 B2 2832 2665 36.54      
11 B2 1291 1215 195.50      
12 B2 254 239 79.00      

Unscaled Zero Point Vibrational Energy (zpe) 8475.2 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 7977.7 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 CISD/3-21G
ABC
6.49016 0.83276 0.79901

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.739 -0.114
B2 0.000 -0.739 -0.114
H3 0.925 0.000 0.571
H4 -0.925 0.000 0.571
H5 0.000 1.911 -0.003
H6 0.000 -1.911 -0.003

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47721.36781.36781.17752.6518
B21.47721.36781.36782.65181.1775
H31.36781.36781.85092.19942.1994
H41.36781.36781.85092.19942.1994
H51.17752.65182.19942.19943.8218
H62.65181.17752.19942.19943.8218

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 57.317 B1 B2 H4 57.317
B1 B2 H6 174.602 B1 H3 B2 65.367
B1 H4 B2 65.367 B2 B1 H3 57.317
B2 B1 H4 57.317 B2 B1 H5 174.602
H3 B1 H4 85.155 H3 B1 H5 119.374
H3 B2 H4 85.155 H3 B2 H6 119.374
H4 B1 H5 119.374 H4 B2 H6 119.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability