return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/cc-pVDZ
 hartrees
Energy at 0K-51.951332
Energy at 298.15K-51.954206
HF Energy-51.885337
Nuclear repulsion energy24.535269
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 B2PLYP=FULL/cc-pVDZ
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 2848 2730 0.10      
2 A1 2096 2009 23.01      
3 A1 1365 1308 2.33      
4 A1 1126 1079 3.81      
5 A1 734 703 2.73      
6 A2 1251 1199 0.00      
7 A2 635 609 0.00      
8 B1 2111 2024 58.62      
9 B1 801 768 1.67      
10 B2 2805 2689 33.48      
11 B2 1333 1278 200.52      
12 B2 527 505 42.60      

Unscaled Zero Point Vibrational Energy (zpe) 8815.9 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 8450.0 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 B2PLYP=FULL/cc-pVDZ
ABC
6.53023 0.82637 0.79754

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.740 -0.117
B2 0.000 -0.740 -0.117
H3 0.907 0.000 0.587
H4 -0.907 0.000 0.587
H5 0.000 1.917 -0.002
H6 0.000 -1.917 -0.002

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48081.36661.36661.18222.6599
B21.48081.36661.36662.65991.1822
H31.36661.36661.81472.20112.2011
H41.36661.36661.81472.20112.2011
H51.18222.65992.20112.20113.8340
H62.65991.18222.20112.20113.8340

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 57.195 B1 B2 H4 57.195
B1 B2 H6 174.394 B1 H3 B2 65.611
B1 H4 B2 65.611 B2 B1 H3 57.195
B2 B1 H4 57.195 B2 B1 H5 174.394
H3 B1 H4 83.204 H3 B1 H5 119.265
H3 B2 H4 83.204 H3 B2 H6 119.265
H4 B1 H5 119.265 H4 B2 H6 119.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability