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 B2H6 (Diborane)

using model chemistry: B2PLYP=FULL/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B2PLYP=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-53.238388
Energy at 298.15K-53.244306
HF Energy-53.140636
Nuclear repulsion energy32.261784
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/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2646 2646 0.00 301.35 0.06 0.12
2 Ag 2202 2202 0.00 84.21 0.05 0.10
3 Ag 1220 1220 0.00 5.82 0.65 0.79
4 Ag 815 815 0.00 18.77 0.14 0.25
5 Au 863 863 0.00 0.00 0.00 0.00
6 B1g 2723 2723 0.00 110.02 0.75 0.86
7 B1g 949 949 0.00 0.47 0.75 0.86
8 B1u 2017 2017 8.60 0.00 0.00 0.00
9 B1u 1003 1003 24.97 0.00 0.00 0.00
10 B2g 1895 1895 0.00 4.04 0.75 0.86
11 B2g 903 903 0.00 0.07 0.75 0.86
12 B2u 2738 2738 173.74 0.00 0.00 0.00
13 B2u 970 970 0.56 0.00 0.00 0.00
14 B2u 370 370 16.54 0.00 0.00 0.00
15 B3g 1052 1052 0.00 5.68 0.75 0.86
16 B3u 2631 2631 145.23 0.00 0.00 0.00
17 B3u 1749 1749 477.80 0.00 0.00 0.00
18 B3u 1211 1211 77.38 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13977.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13977.5 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 B2PLYP=FULL/daug-cc-pVTZ
ABC
2.71387 0.61668 0.56673

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.877 0.000 0.000
B2 -0.877 0.000 0.000
H3 0.000 0.000 0.971
H4 0.000 0.000 -0.971
H5 1.451 1.034 0.000
H6 1.451 -1.034 0.000
H7 -1.451 1.034 0.000
H8 -1.451 -1.034 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75451.30871.30871.18271.18272.54782.5478
B21.75451.30871.30872.54782.54781.18271.1827
H31.30871.30871.94232.02942.02942.02942.0294
H41.30871.30871.94232.02942.02942.02942.0294
H51.18272.54782.02942.02942.06812.90253.5640
H61.18272.54782.02942.02942.06813.56402.9025
H72.54781.18272.02942.02942.90253.56402.0681
H82.54781.18272.02942.02943.56402.90252.0681

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.182 B1 H4 B2 84.182
H3 B1 H4 95.818 H3 B1 H5 108.986
H3 B1 H6 108.986 H3 B2 H4 95.818
H3 B2 H7 108.986 H3 B2 H8 108.986
H4 B1 H5 108.986 H4 B1 H6 108.986
H4 B2 H7 108.986 H4 B2 H8 108.986
H5 B1 H6 121.928 H7 B2 H8 121.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability